BITSAT 2009 Question Paper PDF is available for download. BITSAT 2009 was conducted in online CBT mode by BITS Pilani. BITSAT 2009 Question Paper had 150 questions to be attempted in 3 hours.

BITSAT 2009 Question Paper with Answer Key PDF

BITSAT 2009 Question Paper with Solution PDF Download PDF Check Solutions

Question 1:

Given that \( \vec{A} + \vec{B} = \vec{R} \) and \( A^2 + B^2 = R^2 \). The angle between \( \vec{A} \) and \( \vec{B} \) is:

  • (A) \(0\)
  • (B) \(\pi/4\)
  • (C) \(\pi/2\)
  • (D) \(\pi\)

Question 2:

In the relation \( P = \frac{\alpha Z}{\beta} e^{-k\theta} \), \(P\) is pressure, \(Z\) is distance, \(k\) is Boltzmann constant and \(\theta\) is the temperature. The dimensional formula of \(\beta\) will be:

  • (A) \([M^0L^2T^0]\)
  • (B) \([ML^2T^{-1}]\)
  • (C) \([ML^0T^{-1}]\)
  • (D) \([M^0L^2T^{-1}]\)

Question 3:

Which of the following is most accurate?

  • (A) A screw gauge of least count 0.001 mm.
  • (B) A screw gauge having pitch 1 mm and 50 divisions on circular scale.
  • (C) A vernier calipers of least count 0.01 mm.
  • (D) Vernier calipers having 20 divisions on the sliding scale coinciding 19 divisions on the main millimeter scale.

Question 4:

A projectile projected at an angle \(30^\circ\) from the horizontal has a range \(R\). If the angle of projection at the same initial velocity is \(60^\circ\), the range will be:

  • (A) \(R\)
  • (B) \(R/2\)
  • (C) \(2R\)
  • (D) \(R^2\)

Question 5:

A block of mass \(M\) is pulled along a horizontal frictionless surface by a rope of mass \(M/2\). If a force \(2Mg\) is applied at one end of the rope, the force which the rope exerts on the block is:

  • (A) \( \frac{2Mg}{3} \)
  • (B) \(2Mg\)
  • (C) \( \frac{4Mg}{3} \)
  • (D) zero

Question 6:

A chain of mass \(M\) is placed on a smooth table with \(1/n\) of its length hanging over the edge. The work done in pulling the hanging portion of the chain back to the surface of the table is:

  • (A) \( \frac{MgL}{n} \)
  • (B) \( \frac{MgL}{2n} \)
  • (C) \( \frac{MgL}{n^2} \)
  • (D) \( \frac{MgL}{2n^2} \)

Question 7:

A particle of mass 10 kg moving eastwards with a speed 5 m s\(^{-1}\) collides with another particle of same mass moving northwards with the same speed. The two particles coalesce on collision. The new particle of mass 20 kg will move in the north-east direction with velocity:

  • (A) \(10\ m s^{-1}\)
  • (B) \(5\ m s^{-1}\)
  • (C) \( \frac{5}{\sqrt{2}}\ m s^{-1} \)
  • (D) none of these

Question 8:

A uniform cube of side \(a\) and mass \(m\) rests on a rough horizontal table. A horizontal force \(F\) is applied normal to one of the faces at a point directly above the centre of the face, at a height \(3a/4\) above the base. The minimum value of \(F\) for which the cube begins to topple on an edge is (assume the cube does not slide):

  • (A) \( \frac{mg}{3} \)
  • (B) \( \frac{mg}{2} \)
  • (C) \( \frac{2mg}{3} \)
  • (D) \( \frac{3mg}{4} \)

Question 9:

The rotation of the earth having radius \(R\) about its axis speeds upto a value such that a man at latitude angle \(60^\circ\) feels weightless. The duration of the day in such case will be:

  • (A) \(8\pi\sqrt{\frac{R}{g}}\)
  • (B) \(8\pi\sqrt{\frac{R}{3g}}\)
  • (C) \(\pi\sqrt{\frac{R}{g}}\)
  • (D) \(4\pi\sqrt{\frac{g}{R}}\)

Question 10:

A metallic rod breaks when strain produced is \(0.2%\). The Young’s modulus of the material of the rod is \(7\times10^9\ N m^{-2}\). What should be its area of cross-section to support a load of \(10^4\ N\)?

  • (A) \(7.1\times10^{-8}\ m^2\)
  • (B) \(7.1\times10^{-6}\ m^2\)
  • (C) \(7.1\times10^{-4}\ m^2\)
  • (D) \(7.1\times10^{-2}\ m^2\)

Question 11:

A liquid is flowing through a non-sectional tube with its axis horizontal. If two points X and Y on the axis of tube have sectional area 2.0 cm\(^2\) and 25 mm\(^2\) respectively then find the flow velocity at Y when the flow velocity at X is 10 m/s.

  • (A) 20 m/s
  • (B) 40 m/s
  • (C) 80 m/s
  • (D) 60 m/s

Question 12:

A body of length 1 m having cross-sectional area 0.75 m\(^2\) has heat flow through it at the rate of 600 Joule/sec. Find the temperature difference if \(K = 200\ J m^{-1}K^{-1}\).

  • (A) \(20^\circC\)
  • (B) \(40^\circC\)
  • (C) \(80^\circC\)
  • (D) \(100^\circC\)

Question 13:

Which of the following combinations of properties would be most desirable for a cooking pot?

  • (A) High specific heat and low conductivity
  • (B) Low specific heat and high conductivity
  • (C) High specific heat and high conductivity
  • (D) Low specific heat and low conductivity

Question 14:

A particle starts moving rectilinearly at time \(t=0\) such that its velocity \(v\) changes with time \(t\) according to the equation \(v=t^2-t\), where \(t\) is in seconds and \(v\) is in m/s. Find the time interval for which the particle retards.

  • (A) \(\frac{1}{2}
  • (B) \(\frac{1}{2}>t>1\)
  • (C) \(\frac{1}{4}
  • (D) \(\frac{1}{2}

Question 15:

A sample of gas expands from volume \(V_1\) to \(V_2\). The amount of work done by the gas is greatest when the expansion is:

  • (A) isothermal
  • (B) isobaric
  • (C) adiabatic
  • (D) equal in all cases

Question 16:

A cyclic process is shown in the \(p\!-\!T\) diagram. Which of the curves shows the same process on a \(p\!-\!V\) diagram?



  • (A) Option a
  • (B) Option b
  • (C) Option c
  • (D) Option d

Question 17:

Which one of the following graphs represents the behaviour of an ideal gas?

  • (A) Option a
  • (B) Option b
  • (C) Option c
  • (D) Option d

Question 18:

In case of a forced vibration, the resonance curve becomes very sharp when the

  • (A) restoring force is small
  • (B) applied periodic force is small
  • (C) quality factor is small
  • (D) damping force is small

Question 19:

A pendulum bob carries a +ve charge \(+q\). A positive charge \(+q\) is held at the point of support. Then the time period of the bob is (where \(L\) = length of pendulum, \(g_{eff}\) = effective value of \(g\)):

  • (A) greater than \(2\pi\sqrt{\dfrac{L}{g_{eff}}}\)
  • (B) less than \(2\pi\sqrt{\dfrac{L}{g_{eff}}}\)
  • (C) equal to \(2\pi\sqrt{\dfrac{L}{g_{eff}}}\)
  • (D) equal to \(2\pi\sqrt{\dfrac{2L}{g_{eff}}}\)

Question 20:

Two tuning forks A and B sounded together give 6 beats per second. When at resonance tube closed at one end, the two forks give resonance when the air columns are 24 cm and 25 cm respectively. Calculate the frequencies of forks.

  • (A) 120 Hz, 124 Hz
  • (B) 110 Hz, 114 Hz
  • (C) 150 Hz, 144 Hz
  • (D) 170 Hz, 118 Hz

Question 21:

An electron has an initial velocity in a direction different from that of an electric field, the path of the electron is

  • (A) a straight line
  • (B) a circle
  • (C) an ellipse
  • (D) a parabola

Question 22:

If on combining two charged bodies, the current does not flow then

  • (A) charge is equal on both
  • (B) capacitance is equal on both
  • (C) potential is equal on both
  • (D) resistance is equal on both

Question 23:

Calculate the area of the plates of a one farad parallel plate capacitor if separation between plates is 1 mm and plates are in vacuum

  • (A) \(18\times10^8\ m^2\)
  • (B) \(0.3\times10^8\ m^2\)
  • (C) \(1.3\times10^8\ m^2\)
  • (D) \(1.13\times10^8\ m^2\)

Question 24:

The length of a potentiometer wire is \(\ell\). A cell of emf \(E\) is balanced at a length \(\ell/3\) from the positive end of the wire. If the length of the wire is increased by \(\ell/2\). At what distance will the same cell give a balance point?

  • (A) \(2\ell/3\)
  • (B) \(\ell/2\)
  • (C) \(\ell/6\)
  • (D) \(4\ell/3\)

Question 25:

A constant current \(i\) flows in a loop of radius \(r\). It is placed in a uniform magnetic field \(\vec{B}_0\) such that \(\vec{B}_0\) is perpendicular to the plane of the loop. The magnetic force acting on the loop is

  • (A) \(irB_0\)
  • (B) \(2\pi irB_0\)
  • (C) zero
  • (D) \(\pi irB_0\)

Question 26:

An ammeter reads upto 1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A the value of required shunt is

  • (A) \(0.03\ \Omega\)
  • (B) \(0.3\ \Omega\)
  • (C) \(0.9\ \Omega\)
  • (D) \(0.09\ \Omega\)

Question 27:

At the magnetic north pole of the earth, the value of horizontal component of earth’s magnetic field and angle of dip are, respectively

  • (A) zero, maximum
  • (B) maximum, minimum
  • (C) maximum, maximum
  • (D) minimum, minimum

Question 28:

Lenz’s law is a consequence of the law of conservation of

  • (A) charge
  • (B) mass
  • (C) energy
  • (D) momentum

Question 29:

The instantaneous current from an a.c. source is \(i = 6\sin314t\). What is the rms value of the current?

  • (A) \(3\sqrt{2}\) amp
  • (B) \(2\sqrt{2}\) amp
  • (C) \(\sqrt{2}\) amp
  • (D) 2 amp

Question 30:

A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an a.c. source of 200 volt, 100 Hz is connected across the coil, the current in the coil will be

  • (A) 4.0 A
  • (B) 8.0 A
  • (C) 7.2 A
  • (D) 2.0 A

Question 31:

The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is

  • (A) 3 V/m
  • (B) 6 V/m
  • (C) 9 V/m
  • (D) 12 V/m

Question 32:

A plano-convex lens of focal length 30 cm has its plane surface silvered. An object is placed 40 cm from the lens on the convex side. The distance of the image from the lens is

  • (A) 18 cm
  • (B) 24 cm
  • (C) 30 cm
  • (D) 40 cm

Question 33:

When a mica sheet of thickness 7 microns and \(\mu=1.6\) is placed in the path of one of interfering beams in a biprism experiment then the central fringe gets at the position of seventh bright fringe. The wavelength of light used will be

  • (A) 4000 \AA
  • (B) 5000 \AA
  • (C) 6000 \AA
  • (D) 7000 \AA

Question 34:

In Young's double slit experiment, if the slit widths are in the ratio 1:2, the ratio of the intensities at maxima will be

  • (A) 1 : 2
  • (B) 1 : 3
  • (C) 1 : 4
  • (D) 1 : 9

Question 35:

In a photoelectric experiment, with light of wavelength \(\lambda\), the fastest electron has speed \(v\). If the exciting wavelength is changed to \(3\lambda/4\), the speed of the fastest emitted electron will become

  • (A) \(\sqrt{\frac{3}{4}}v\)
  • (B) \(\sqrt{\frac{4}{3}}v\)
  • (C) less than \(\sqrt{\frac{4}{3}}v\)
  • (D) greater than \(\sqrt{\frac{4}{3}}v\)

Question 36:

Taking Rydberg’s constant \(R_H=1.097\times10^7\ m^{-1}\), the first and second wavelength of Balmer series in hydrogen spectrum is

  • (A) 2000 \AA, 3000 \AA
  • (B) 1575 \AA, 2960 \AA
  • (C) 6529 \AA, 4280 \AA
  • (D) 6552 \AA, 4863 \AA

Question 37:

An X-ray tube is operated at 15 kV. Calculate the upper limit of the speed of the electrons striking the target.

  • (A) \(7.26\times10^7\ m/s\)
  • (B) \(7.62\times10^7\ m/s\)
  • (C) \(7.62\times10^9\ m/s\)
  • (D) \(7.26\times10^9\ m/s\)

Question 38:

Nuclear energy released in fission since binding energy per nucleon is

  • (A) sometimes larger and sometimes smaller
  • (B) larger for fission fragments than for parent nucleus
  • (C) same for fission fragments and nucleus
  • (D) smaller for fission fragments than for parent nucleus

Question 39:

Assuming the diodes to be of silicon with forward resistance zero, the current \(I\) in the following circuit is

  • (A) 0
  • (B) 9.65 mA
  • (C) 10 mA
  • (D) 10.35 mA

Question 40:

The truth table given below corresponds to the logic gate
\[ \begin{array}{c|c|c} A & B & X
\hline 0 & 0 & 1
1 & 0 & 0
0 & 1 & 0
1 & 1 & 0 \end{array} \]

  • (A) OR
  • (B) NOR
  • (C) AND
  • (D) NAND

Question 41:

Given the numbers : 161 cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers are

  • (A) 3, 4 and 5 respectively
  • (B) 3, 3 and 4 respectively
  • (C) 3, 3 and 3 respectively
  • (D) 3, 4 and 4 respectively

Question 42:

Beryllium resembles much with :

  • (A) Zn
  • (B) Al
  • (C) Li
  • (D) Ra

Question 43:

Which one of the following ions has the highest value of ionic radius?

  • (A) \( \mathrm{O^{2-}} \)
  • (B) \( \mathrm{B^{3+}} \)
  • (C) \( \mathrm{Li^{+}} \)
  • (D) \( \mathrm{F^{-}} \)

Question 44:

Which of the following two are isostructural ?

  • (A) XeF\(_2\), IF\(_2^-\)
  • (B) NH\(_3\), BF\(_3\)
  • (C) CO\(_3^{2-}\), SO\(_3^{2-}\)
  • (D) PCl\(_5\), ICl\(_5\)

Question 45:

The cooking in a pressure cooker is less because :

  • (A) More heat is used
  • (B) High pressure cooks the food
  • (C) The boiling point of water increases in the cooker
  • (D) Heat is uniformly distributed

Question 46:

For the reaction : \( \mathrm{N_2 + 3H_2 \rightleftharpoons 2NH_3} \). Which one of the following is correct regarding \(\Delta H\):

  • (A) \(\Delta H = \Delta E + 2RT\)
  • (B) \(\Delta H = \Delta E - 2RT\)
  • (C) \(\Delta H = \Delta E + RT\)
  • (D) \(\Delta H = \Delta E - RT\)

Question 47:

One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 litre to 10 litres. The \(\Delta E\) for this process is (R = 2 cal mol\(^{-1}\) K\(^{-1}\)):

  • (A) 163.7 cal
  • (B) zero
  • (C) 1381.1 cal
  • (D) 9 litre atm

Question 48:

At 25°C and 1 bar which of the following has a non-zero \(\Delta H_f^\circ\) ?

  • (A) Br\(_2(l)\)
  • (B) C (graphite)
  • (C) O\(_3(g)\)
  • (D) I\(_2(s)\)

Question 49:

If the equilibrium constant of the reaction \(2HI \rightleftharpoons H_2 + I_2\) is 0.25, then the equilibrium constant for the reaction \(H_2 + I_2 \rightleftharpoons 2HI\) would be

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4

Question 50:

The oxidation states of sulphur in the anions \(\mathrm{SO_3^{2-}},\ \mathrm{S_2O_4^{2-}}\) and \(\mathrm{S_2O_6^{2-}}\) follow the order

  • (A) \(\mathrm{SO_3^{2-} < S_2O_4^{2-} < S_2O_6^{2-}}\)
  • (B) \(\mathrm{S_2O_4^{2-} < S_2O_6^{2-} < SO_3^{2-}}\)
  • (C) \(\mathrm{S_2O_6^{2-} < S_2O_4^{2-} < SO_3^{2-}}\)
  • (D) \(\mathrm{S_2O_4^{2-} < SO_3^{2-} < S_2O_6^{2-}}\)

Question 51:

The value of x is maximum for

  • (A) MgSO\(_4\cdot x\)H\(_2\)O
  • (B) CaSO\(_4\cdot x\)H\(_2\)O
  • (C) BaSO\(_4\cdot x\)H\(_2\)O
  • (D) All have the same

Question 52:

For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be

  • (A) tin
  • (B) sodium
  • (C) magnesium
  • (D) mercury

Question 53:

The intermediate formed during the addition of HCl to propene in the presence of peroxide is

  • (A) CH\(_3\)CHCH\(_2\)Cl
  • (B) CH\(_2\)CHCH\(_3^+\)
  • (C) CH\(_3\)CH\(_2\)CH\(_2^+\)
  • (D) CH\(_3\)CH\(_2\)CH\(_2^-\)

Question 54:

Which of the following has zero dipole moment?

  • (A) 1,1-dichloromethane
  • (B) cis-1,2-dichloroethene
  • (C) trans-1,2-dichloroethene
  • (D) 1-chloroethane

Question 55:

Keto–enol tautomerism is observed in

  • (A) C\(_6\)H\(_5\)–C(=O)–H
  • (B) C\(_6\)H\(_5\)–C(=O)–CH\(_3\)
  • (C) C\(_6\)H\(_5\)–C(=O)–C\(_6\)H\(_5\)
  • (D) None

Question 56:

Which one of the following contain isopropyl group?

  • (A) 2,2,3,3-Tetramethylpentane
  • (B) 2-Methylpentane
  • (C) 2,2,3-Trimethylpentane
  • (D) 3,3-Dimethylpentane

Question 57:

The statement which is not correct about control of particulate pollution is:

  • (A) In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed.
  • (B) Gravity settling chamber removes larger particles from the air.
  • (C) Cyclone collector removes fine particles in the diameter range 5–20 microns.
  • (D) Wet scrubbers are used to wash away all types of particulates.

Question 58:

Chief source of soil and water pollution is:

  • (A) Mining
  • (B) Agro industry
  • (C) Thermal power plant
  • (D) All of the above

Question 59:

The false statement among the followings:

  • (A) The average residence time of NO is one month.
  • (B) Limestone acts as a sink for SO\(_x\).
  • (C) SO\(_x\) can be removed from flue gases by passing through a solution of citrate ions.
  • (D) Ammonia acts as a sink for NO\(_x\).

Question 60:

The atomic radius of atom is \(r\). Total volume of atoms present in an fcc unit cell of an element is:

  • (A) \(\dfrac{24}{3}\pi r^3\)
  • (B) \(\dfrac{12}{3}\pi r^3\)
  • (C) \(\dfrac{16}{3}\pi r^3\)
  • (D) None

Question 61:

Which one of the following statements is false?

  • (A) The correct order of osmotic pressure for 0.01 M aqueous solution of each compound is BaCl\(_2\) > KCl > CH\(_3\)COOH > sucrose.
  • (B) The osmotic pressure (\(\pi\)) of a solution is given by \(\pi = MRT\), where \(M\) is the molarity of the solution.
  • (C) Raoult’s law states that the vapour pressure of a component over a solution is proportional to its mole fraction.
  • (D) Two sucrose solutions of same molality prepared in different solvents will have the same freezing point depression.

Question 62:

The degree of dissociation of Ca(NO\(_3\))\(_2\) in a dilute aqueous solution containing 7.0 g of salt per 100 g of water at \(100^\circ\)C is 70%. If vapour pressure of water at \(100^\circ\)C is 760 mm Hg, the vapour pressure of the solution is:

  • (A) 735 mm Hg
  • (B) 730 mm Hg
  • (C) 760 mm Hg
  • (D) 746 mm Hg

Question 63:

When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are:


\begin{tabular{c c
Cathode & Anode

\end{tabular

  • (A) Pure zinc \quad Pure copper
  • (B) Impure sample \quad Pure copper
  • (C) Impure zinc \quad Impure sample
  • (D) Pure copper \quad Impure sample

Question 64:

The conductivity of a saturated solution of BaSO\(_4\) is \(3.06 \times 10^{-6}\ \Omega^{-1}cm^{-1}\) and its equivalent conductance is \(1.53\ \Omega^{-1}cm^2eq^{-1}\). The \(K_{sp}\) for BaSO\(_4\) is:

  • (A) \(4 \times 10^{-12}\)
  • (B) \(2.5 \times 10^{-9}\)
  • (C) \(2.5 \times 10^{-13}\)
  • (D) \(4 \times 10^{-6}\)

Question 65:

A cell that utilises the reaction \[ Zn(s) + 2H^+(aq) \rightleftharpoons Zn^{2+}(aq) + H_2(g) \]
addition of H\(_2\)SO\(_4\) to cathode compartment, will:

  • (A) increase the E and shift equilibrium to the right.
  • (B) lower the E and shift equilibrium to the right.
  • (C) lower the E and shift equilibrium to the left.
  • (D) increase the E and shift equilibrium to the left.

Question 66:

The chemical reaction \(2O_3 \rightarrow 3O_2\) proceeds as follows: \[ O_3 \xrightarrow{fast} O_2 + O \] \[ O + O_3 \xrightarrow{slow} 2O_2 \]
The rate law expression should be:

  • (A) \(r = k[O_3]\)
  • (B) \(r = k[O_3][O_2]^{-1}\)
  • (C) \(r = k[O_3]^2[O_2]^2\)
  • (D) \(r = k[O_3][O_2]^2\)

Question 67:

Among the following statements the incorrect one is:

  • (A) Calamine and siderite are carbonates.
  • (B) Argentite and cuprite are oxides.
  • (C) Zinc blende and iron pyrites are sulphides.
  • (D) Malachite and azurite are ores of copper.

Question 68:

Cinnabar is an ore of:

  • (A) Hg
  • (B) Cu
  • (C) Pb
  • (D) Zn

Question 69:

Which of the following is used in the preparation of chlorine?

  • (A) Only MnO\(_2\)
  • (B) Only KMnO\(_4\)
  • (C) Both MnO\(_2\) and KMnO\(_4\)
  • (D) Either MnO\(_2\) or KMnO\(_4\)

Question 70:

Which of the following elements does not belong to the first transition series?

  • (A) Fe
  • (B) V
  • (C) Ag
  • (D) Cu

Question 71:

[EDTA]\(^{4-}\) is a:

  • (A) monodentate ligand
  • (B) bidentate ligand
  • (C) quadridentate ligand
  • (D) hexadentate ligand

Question 72:

Which of the following order is not correct?

  • (A) MeBr > Me\(_2\)CHBr > Me\(_3\)CBr (SN2)
  • (B) Me\(_3\)CBr > Me\(_2\)CHBr > MeCH\(_2\)Br > MeCH\(_2\)CH\(_2\)Br (SN1)
  • (C) PhCH\(_2\)Br > PhCHBrMe > PhCBrMe\(_2\) > PhCBrMe\(_3\) (SN1)
  • (D) MeI > MeBr > MeCl > MeF (SN2)

Question 73:

When esters are hydrolysed the product which gives hydrogen ions is:

  • (A) acid
  • (B) alcohol
  • (C) both acid or alcohol
  • (D) either acid or alcohol

Question 74:

Which of the following compound cannot be used in preparation of iodoform?

  • (A) CH\(_3\)CHO
  • (B) CH\(_3\)COCH\(_3\)
  • (C) HCHO
  • (D) 2-propanol

Question 75:

Which of the following compound is obtained by heating ammonium cyanate?

  • (A) Alkane
  • (B) Urea
  • (C) Ethylamine
  • (D) Ammonium thiocyanate

Question 76:

Which of the following statements about vitamin B\(_{12}\) is incorrect?

  • (A) It has a cobalt atom.
  • (B) It also occurs in plants.
  • (C) It is also present in rain water.
  • (D) It is needed for human body in very small amounts.

Question 77:

Ammonia forms the complex ion [Cu(NH\(_3\))\(_4\)]\(^{2+}\) with copper ions in alkaline solutions but not in acidic solutions. What is the reason for it?

  • (A) In acidic solutions protons coordinate with ammonia molecules forming NH\(_4^+\) ions and NH\(_3\) molecules are not available.
  • (B) In alkaline solutions insoluble Cu(OH)\(_2\) is precipitated which is soluble in excess of any alkali.
  • (C) Copper hydroxide is an amphoteric substance.
  • (D) In acidic solutions hydration protects copper ions.

Question 78:

An aqueous solution of a substance gives a white precipitate on treatment with dil. HCl which dissolves on heating. When H\(_2\)S is passed through the hot acidic solution, a black precipitate is obtained. The substance is a:

  • (A) Hg\(^{2+}\) salt
  • (B) Cu\(^{2+}\) salt
  • (C) Ag\(^+\) salt
  • (D) Pb\(^{2+}\) salt

Question 79:

The one which is least basic is:

  • (A) NH\(_3\)
  • (B) C\(_6\)H\(_5\)NH\(_2\)
  • (C) (C\(_6\)H\(_5\))\(_3\)N
  • (D) (C\(_6\)H\(_5\))\(_2\)NH

Question 80:

Interparticle forces present in nylon-66 are:

  • (A) van der Waals’
  • (B) hydrogen bonding
  • (C) dipole–dipole interactions
  • (D) None of the above

Question 81:

If \(A=\{1,2,3,4,5\}\), then the number of proper subsets of \(A\) is:

  • (A) 31
  • (B) 38
  • (C) 48
  • (D) 54

Question 82:

The range of the function \(f(x)=\dfrac{x^2-x+1}{x^2+x+1}\), where \(x\in\mathbb{R}\), is:

  • (A) \((-\infty,3]\)
  • (B) \((-\infty,\infty)\)
  • (C) \([3,\infty)\)
  • (D) \(\left[\frac13,3\right]\)

Question 83:

If \(y=\dfrac{2\sin\alpha}{1+\cos\alpha+\sin\alpha}\), then the value of \(\dfrac{1-\cos\alpha+\sin\alpha}{1+\sin\alpha}\) is:

  • (A) \(\dfrac{y}{3}\)
  • (B) \(y\)
  • (C) \(2y\)
  • (D) \(\dfrac{3}{2}y\)

Question 84:

The period of \(\dfrac{\sin\theta+\sin2\theta}{\cos\theta+\cos2\theta}\) is:

  • (A) \(2\pi\)
  • (B) \(\pi\)
  • (C) \(\dfrac{2\pi}{3}\)
  • (D) \(\dfrac{\pi}{3}\)

Question 85:

The general solution of \(8\tan^2\frac{x}{2}=1+\sec x\) is:

  • (A) \(2n\pi\pm\cos^{-1}\!\left(-\frac13\right)\)
  • (B) \(2n\pi\pm\frac{\pi}{6}\)
  • (C) \(2n\pi\pm\cos^{-1}\!\left(\frac13\right)\)
  • (D) None of these

Question 86:

\(10^n+3(4^{n+2})+5\) is divisible by (\(n\in\mathbb{N}\)):

  • (A) 7
  • (B) 5
  • (C) 9
  • (D) 17

Question 87:

If the expression \(x^2-11x+a\) and \(ax^2-14x+2a\) must have a common factor, then the common factor is:

  • (A) \((x-3)\)
  • (B) \((x-6)\)
  • (C) \((x-8)\)
  • (D) None of these

Question 88:

For the equation \(\dfrac{1}{x+a}+\dfrac{1}{x+b}=\dfrac{1}{x+c}\), if the product of roots is zero, the sum of roots is:

  • (A) 0
  • (B) \(\dfrac{2ab}{b+c}\)
  • (C) \(\dfrac{2bc}{b+c}\)
  • (D) \(-\dfrac{2bc}{b+c}\)

Question 89:

If \(\arg(z_1)=\arg(z_2)\), then:

  • (A) \(z_2=z_1^{-1}\ (k>0)\)
  • (B) \(z_2=kz_1\ (k>0)\)
  • (C) \(|z_2|=|z_1|\)
  • (D) None of these

Question 90:

If \(\dfrac{2x+3}{5} < \dfrac{4x-1}{2}\), then \(x\) lies in the interval:

  • (A) \(\left[0,\frac{11}{16}\right)\)
  • (B) \(\left[\frac{11}{16},\infty\right)\)
  • (C) \(\left(0,\frac{11}{16}\right)\)
  • (D) \(\left(\frac{11}{16},\infty\right)\)

Question 91:

The letters of the word TOUGH are written in all possible orders and the words are written out as in a dictionary. Then the rank of the word TOUGH is:

  • (A) 120
  • (B) 88
  • (C) 89
  • (D) 90

Question 92:

If in the expansion of \(\left(2x+\dfrac{1}{4x}\right)^n\), \(T_3 = 7T_2\) and the sum of the binomial coefficients of second and third terms is 36, then the value of \(x\) is:

  • (A) \(-\frac{1}{3}\)
  • (B) \(-\frac{1}{2}\)
  • (C) \(\frac{1}{3}\)
  • (D) \(\frac{1}{2}\)

Question 93:

The 100th term of the sequence \(1,2,2,3,3,3,4,4,4,4,\dots\) is:

  • (A) 12
  • (B) 13
  • (C) 14
  • (D) 15
Correct Answer: (C)
View Solution

The number \(n\) appears \(n\) times.
Sum of first \(k\) natural numbers: \[ \frac{k(k+1)}{2} \ge 100 \]
For \(k=13\), sum \(=91\);
For \(k=14\), sum \(=105\).

Hence the 100th term is 14. Quick Tip: Use triangular numbers to locate terms.


Question 94:

The line \(3x-4y+7=0\) is rotated through an angle \(\frac{\pi}{4}\) in the clockwise direction about the point \((-1,1)\). The equation of the line in its new position is:

  • (A) \(7y+x-6=0\)
  • (B) \(7y-x-6=0\)
  • (C) \(7y+x+6=0\)
  • (D) \(7y-x+6=0\)

Question 95:

Find the vertex of the parabola \(x^2-8y-x+19=0\).

  • (A) \(\left(\frac12,\frac{75}{32}\right)\)
  • (B) \(\left(\frac15,\frac{65}{32}\right)\)
  • (C) \(\left(\frac13,\frac{65}{32}\right)\)
  • (D) \(\left(\frac13,\frac{35}{12}\right)\)

Question 96:

If \(f(t)=\dfrac{1-t}{1+t}\), then \(f'(1)\) is equal to:

  • (A) \(\dfrac{1}{(1+t)^2}\)
  • (B) \(\dfrac{1}{(t-1)^2}\)
  • (C) \(-\dfrac{2t}{(t+1)^2}\)
  • (D) \(-\dfrac{2}{(t+1)^2}\)

Question 97:

If: p: Raju is tall and q: Raju is intelligent, then the symbolic statement \(\sim p \vee q\) means:

  • (A) Raju is not tall or he is intelligent.
  • (B) Raju is tall or he is intelligent.
  • (C) Raju is not tall and he is intelligent.
  • (D) Raju is not tall implies he is intelligent.

Question 98:

Given below is a frequency distribution with median 46. In this distribution, some of the frequencies are missing. Determine the missing frequencies.


\begin{tabular{|c|c|c|c|c|c|c|c|
\hline
Marks & 10--20 & 20--30 & 30--40 & 40--50 & 50--60 & 60--70 & 70--80

\hline
No. of students & 12 & 30 & \(x\) & 65 & \(y\) & 25 & 18

\hline
\end{tabular


Total number of students = 229

  • (A) 34, 45
  • (B) 25, 40
  • (C) 12, 18
  • (D) 30, 35

Question 99:

If the function \(f:(-\infty,\infty)\to B\) defined by \(f(x)=-x^2+6x-8\) is bijective, then \(B=\)

  • (A) \([1,\infty)\)
  • (B) \((-\infty,1]\)
  • (C) \((-\infty,\infty)\)
  • (D) None of these

Question 100:

Find the value of \[ 2\tan^{-1}\frac{1}{5}+\tan^{-1}\frac{1}{2}+2\tan^{-1}\frac{1}{8} \]

  • (A) \(\pi/4\)
  • (B) \(\pi/2\)
  • (C) \(3\pi/4\)
  • (D) None of these

Question 101:

If \(A\) and \(B\) are \(2\times2\) matrices, which of the following is true?

  • (A) \((A+B)^2=A^2+B^2+2AB\)
  • (B) \((A-B)^2=A^2+B^2-2AB\)
  • (C) \((A-B)(A+B)=A^2+AB-BA-B^2\)
  • (D) \((A-B)(A+B)=A^2-B^2\)

Question 102:

If \(a>0,\ b>0,\ c>0\) are respectively the \(p\)th, \(q\)th, \(r\)th terms of G.P., then the value of the determinant \[ \begin{vmatrix} \log a & p & 1
\log b & q & 1
\log c & r & 1 \end{vmatrix} \]
is

  • (A) 0
  • (B) 1
  • (C) -1
  • (D) None of these

Question 103:

The digits \(A,B,C\) are such that the three-digit numbers \(A88, 6B8, 86C\) are divisible by 72. Then the determinant \[ \begin{vmatrix} A & 6 & 8
8 & B & 6
8 & 8 & C \end{vmatrix} \]
is divisible by

  • (A) 72
  • (B) 144
  • (C) 288
  • (D) 216

Question 104:

If \[ M(\alpha)= \begin{bmatrix} \cos\alpha & -\sin\alpha & 0
\sin\alpha & \cos\alpha & 0
0 & 0 & 1 \end{bmatrix}, \quad M(\beta)= \begin{bmatrix} \cos\beta & 0 & \sin\beta
0 & 1 & 0
-\sin\beta & 0 & \cos\beta \end{bmatrix} \]
then \([M(\alpha)M(\beta)]^{-1}\) is equal to

  • (A) \(M(\beta)M(\alpha)\)
  • (B) \(M(-\alpha)M(-\beta)\)
  • (C) \(M(-\beta)M(-\alpha)\)
  • (D) \(-M(\beta)M(\alpha)\)

Question 105:

If \(y=e^{-x}\cos x\) and \(y+k y'=0\), where \(y_4=\dfrac{d^4y}{dx^4}\), then \(k=\)

  • (A) 4
  • (B) -4
  • (C) 2
  • (D) -2

Question 106:

The set of points of discontinuity of the function \[ f(x)=\frac{1}{|x|\log|x|} \]
is

  • (A) \(\{-1,0,1\}\)
  • (B) \(\{0\}\)
  • (C) \(\{0,1\}\)
  • (D) None of these

Question 107:

The minimum value of the function \(y=x^4-2x^2+1\) in the interval \(\left[-\frac12,2\right]\) is

  • (A) 0
  • (B) 2
  • (C) 8
  • (D) 9

Question 108:

The value of \(a\) in order that \[ f(x)=\sin x-\cos x-ax+b \]
decreases for all real values is

  • (A) \(a\ge\sqrt{2}\)
  • (B) \(a<\sqrt{2}\)
  • (C) \(a\ge1\)
  • (D) \(a<1\)

Question 109:

The equation of tangent to the curve \(y=\sin x\) at the point \((\pi,0)\) is

  • (A) \(x+y=0\)
  • (B) \(x+y=\pi\)
  • (C) \(x-y=\pi\)
  • (D) \(x-y=0\)

Question 110:

If \[ \int \frac{2\cos x-\sin x+\lambda}{\cos x+\sin x-2}\,dx = A\ln|\cos x+\sin x-2|+Bx+C, \]
then the ordered triplet \((A,B,\lambda)\) is

  • (A) \(\left(\frac12,\frac32,-1\right)\)
  • (B) \(\left(\frac32,\frac12,-1\right)\)
  • (C) \(\left(\frac12,-1,\frac32\right)\)
  • (D) \(\left(\frac32,-1,\frac12\right)\)

Question 111:

Evaluate: \[ \int x\tan^{-1}x\,dx \]

  • (A) \(\frac12(x^2+1)\tan^{-1}x-\frac12x+C\)
  • (B) \(\frac12(x^2+1)\tan^{-1}x+\frac12x+C\)
  • (C) \(\frac12(x^2-1)\tan^{-1}x-\frac12x+C\)
  • (D) None of these

Question 112:

Evaluate \[ \int_0^1 \frac{dx}{\sqrt{2-x^2}} \]

  • (A) \(\pi/4\)
  • (B) \(\pi\)
  • (C) \(\pi/2\)
  • (D) \(\pi/3\)

Question 113:

If \(\int_0^n [x]\,dx = 66\), then \(n=\)

  • (A) 24
  • (B) 9
  • (C) 12
  • (D) 7

Question 114:

Area of the triangle formed by the line \(x+y=3\) and angle bisectors of the pair of straight lines \(x^2-y^2+2y=1\) is

  • (A) 2 sq. units
  • (B) 4 sq. units
  • (C) 6 sq. units
  • (D) 8 sq. units

Question 115:

Solution of differential equation \[ \frac{dy}{dx}+\frac{y}{x}=\sin x \]

  • (A) \(x(y+\cos x)=\cos x+C\)
  • (B) \(x(y-\cos x)=\sin x+C\)
  • (C) \(x(y+\cos x)=\sin x+C\)
  • (D) None of these

Question 116:

If the line \[ \frac{x-4}{1}=\frac{y-2}{1}=\frac{z-k}{2} \]
lies in the plane \(2x-4y+z=7\), then the value of \(k\) is

  • (A) 4
  • (B) -7
  • (C) 7
  • (D) No real value

Question 117:

A line segment has length 63 and direction ratios are \(3,-2,6\). If the line makes an obtuse angle with x-axis, the components of the line vector are

  • (A) \(27,-18,54\)
  • (B) \(-27,18,54\)
  • (C) \(-27,18,-54\)
  • (D) \(27,-18,-54\)

Question 118:

It is given that the events \(A\) and \(B\) are such that \[ P(A)=\frac14,\ P(A|B)=\frac12,\ P(B|A)=\frac23 \]
Then \(P(B)\) is

  • (A) \(\frac16\)
  • (B) \(\frac13\)
  • (C) \(\frac23\)
  • (D) \(\frac12\)

Question 119:

The random variable \(X\) has the following probability distribution


\begin{tabular{|c|c|c|c|c|c|
\hline \(x\) & 0 & 1 & 2 & 3 & 4

\hline \(P(X=x)\) & \(k\) & \(3k\) & \(5k\) & \(2k\) & \(k\)

\hline
\end{tabular


Then the value of \(P(X\ge2)\) is

  • (A) \(\frac13\)
  • (B) \(\frac23\)
  • (C) \(\frac34\)
  • (D) \(\frac14\)

Question 120:

In a triangle \(ABC\), \(\angle C=90^\circ\), then \[ \frac{a^2-b^2}{a^2+b^2} \]
is equal to

  • (A) \(\sin(A+B)\)
  • (B) \(\sin(A-B)\)
  • (C) \(\cos(A+B)\)
  • (D) \(\sin\frac{A-B}{2}\)

Question 121:

A person standing on the bank of a river observes that the angle subtended by a tree on the opposite bank is \(60^\circ\). When he retreats 20 feet from the bank, he finds the angle to be \(30^\circ\). The breadth of the river in feet is:

  • (A) 15
  • (B) \(15\sqrt{3}\)
  • (C) \(10\sqrt{3}\)
  • (D) 10

Question 122:

The minimum value of the function \(z=4x+3y\) subject to the constraints \[ 3x+2y\ge160,\;5x+2y\ge200,\;x+2y\ge80,\;x\ge0,\;y\ge0 \]
is

  • (A) 320
  • (B) 300
  • (C) 220
  • (D) 200

Question 123:

If \(|r|>1\) and \[ x=a+\frac{a}{r^2}+\frac{a}{r^4}+\cdots,\quad y=b-\frac{b}{r^2}+\frac{b}{r^4}-\cdots, \] \[ z=c+\frac{c}{r^2}+\frac{c}{r^4}+\cdots, \]
then \(\dfrac{xy}{z}\) is equal to

  • (A) \(\dfrac{ab}{c}\)
  • (B) \(\dfrac{ac}{b}\)
  • (C) \(\dfrac{bc}{a}\)
  • (D) 1

Question 124:

Two tangents \(PQ\) and \(PR\) drawn to the circle \(x^2+y^2-2x-4y-20=0\) from point \(P(16,7)\). If the centre of the circle is \(C\), the area of quadrilateral \(PQCR\) is

  • (A) 75 sq. unit
  • (B) 73 sq. unit
  • (C) 72 sq. unit
  • (D) 74 sq. unit

Question 125:

The value of \[ \lim_{x\to0}\frac{(4^x-1)^3}{x^2\log(1+3x)} \]
is

  • (A) \(\frac{4}{3}(\ln4)^2\)
  • (B) \(\frac{4}{3}(\ln4)^3\)
  • (C) \(\frac{3}{2}(\ln4)^2\)
  • (D) \(\frac{3}{2}(\ln4)^3\)

Question 126:

Agnostic

  • (A) One who is not sure about God's existence.
  • (B) One who believes in God's existence.
  • (C) One having different style of living.
  • (D) None of above.

Question 127:

Bohemian

  • (A) waves in the sea.
  • (B) fresh mood.
  • (C) irritation.
  • (D) an unconventional style of living.

Question 128:

Cacographist

  • (A) One who is having ego.
  • (B) One who has unique style.
  • (C) One who is bad in spelling.
  • (D) One who is good in spelling.

Question 129:

Spelling test – find correct spelling:

  • (A) Vetarinary
  • (B) Vetenary
  • (C) Veteninary
  • (D) Veterinary

Question 130:

Spelling test – find correct spelling:

  • (A) Rigerous
  • (B) Rigorous
  • (C) Regerous
  • (D) Rigourous

Question 131:

Spelling test – find correct spelling:

  • (A) Itinerary
  • (B) Itinary
  • (C) Interary
  • (D) Itinerory

Question 132:

REPRIMAND

  • (A) Reward
  • (B) Appreciate
  • (C) Encourage
  • (D) Praise

Question 133:

IMPERTINENT

  • (A) Polite
  • (B) Indifferent
  • (C) Unpleasant
  • (D) Stubborn

Question 134:

EQUIVOCAL

  • (A) Mistaken
  • (B) Quaint
  • (C) Clear
  • (D) Universal

Question 135:

It is difficult to believe what he tells us because his account of any event is always full of _________.

  • (A) discrepancies
  • (B) differences
  • (C) discretions
  • (D) distinctions

Question 136:

The bank clerk tried to _________ money from his friend’s account.

  • (A) empower
  • (B) embellish
  • (C) embroil
  • (D) embezzle

Question 137:

Eight scientists have _________ the national awards for outstanding contribution and dedication to the profession.

  • (A) bestowed
  • (B) picked
  • (C) bagged
  • (D) conferred

Question 138:

Freedom, is the restricted kind in the sense (P), the rich and poor woman (Q), that a wide gulf separates (R), which a modern woman enjoys (S).

  • (A) PSRQ
  • (B) SRQP
  • (C) RQPS
  • (D) SPRQ

Question 139:

In life, some rules are (P), as in business (Q), they seem almost instinctive (R), learnt so early that (S).

  • (A) RSPQ
  • (B) QPSR
  • (C) RPSQ
  • (D) QSPR

Question 140:

Kapil, left in an aeroplane (P), after reading a sailing magazine (Q), had decided (R), to build his own boat nine years earlier (S).

  • (A) PRQS
  • (B) RSQP
  • (C) RQPS
  • (D) PSRQ

Question 141:

Distance : Odometer :: ? : Barometer

  • (A) Humidity
  • (B) Pressure
  • (C) Thickness
  • (D) Wind

Question 142:

One of the numbers does not fit into the series. Find the wrong number. \[ 13,\;16,\;38,\;124,\;504,\;2535 \]

  • (A) 16
  • (B) 38
  • (C) 124
  • (D) 504

Question 143:

Statement:
In order to reduce the gap between income and expenditure, the company has decided to increase the price of its product from next month.

Assumptions:
I. The rate will remain more or less same after the increase.
II. The expenditure will more or less remain the same in near future.
III. The rival companies will also increase the price of the similar product.

  • (A) Only I and II are implicit.
  • (B) Only II and III are implicit.
  • (C) Only III is implicit.
  • (D) None of these

Question 144:

FLMO : ?? :: BFEN : ARSO

  • (A) BZYS
  • (B) CZYS
  • (C) SZYB
  • (D) YZBC

Question 145:

If A denotes '+', B denotes '-', C denotes '×'. Then what is the value of \[ 10\ C\ 4\ A\ (4\ C\ 4)\ B\ 6? \]

  • (A) 60
  • (B) 50
  • (C) 56
  • (D) 46

Question 146:

In this question, two figures are given to the left of the sign :: and one figure is given to the right of the sign. Find the correct alternative.

  • (A) Option a
  • (B) Option b
  • (C) Option c
  • (D) Option d

Question 147:

Identify the missing part of the figure and select it from the given alternatives.

  • (A) Option a
  • (B) Option b
  • (C) Option c
  • (D) Option d

Question 148:

Figure (X) is embedded in any one of the four alternative figures. Choose the alternative which contains figure (X).

  • (A) Option a
  • (B) Option b
  • (C) Option c
  • (D) Option d

Question 149:

Which symbol will appear on the opposite surface to the symbol x?

  • (A) +
  • (B) ×
  • (C) +
  • (D) =

Question 150:

The three figures marked X, Y, Z show the manner in which a paper is folded step by step and then cut. From the answers figures (a), (b), (c), (d), select the one showing the unfolded position of the paper after the cut.

  • (A) Option a
  • (B) Option b
  • (C) Option c
  • (D) Option d