JEE Full Syllabus MCQs Set C

Question:

• a) 360 nm
• b) 270 nm
• c) 540 nm
• d) 810 nm

Answer: 360 nm

Question:

• a)

  

• b)

  

• c) 2
• d) 1

Answer:

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: If there is an error of 1% in calculation of mass of disc & 1.5 % error in radius, then % error in moment of inertia about an axis tangent to disc is :

• a) 4%
• b) 5%
• c) 2.5 %
• d) 3.5%

Answer: 4%

Question: A particle having some charge is projected in x-y plane with a speed of 5 m/s in a region having uniform magnetic field along z-axis. Which of the following cannot be the possible value of velocity at any time ?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Three charged concentric nonconducting shells are given as shown in figure. Find the potential at point A :-

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  Initially the whole system is at rest and now a force of 62 N is applied on the block B as shown in the figure. Find the time taken by 'A' to fall from the block 'B' :-

• a) 4 sec
• b) 5 sec
• c) 3 sec
• d)

  

Answer: 4 sec

Question:  A stone of mass 1 kg tied on one end of the light string is whirled in vertical circle as shown in figure. Tension in the string when the string becomes horizontal is :

• a) 40 N
• b) 20 N
• c) 30 N
• d) 50 N

Answer: 40 N

Question:  Initially the circuit is in steady state. Now one of the capacitor is filled with dielectric of dielectric constant 2. Find the heat loss in the circuit due to insertion of dielectric:-

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  Initially system is in equilibrium. Time period of SHM of block in vertical direction is :

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  A ball of mass m is moving with a speed V as shown in the figure. It undergoes inelastic collision with a ball of mass 2m which was initially at rest. The velocity of ball 2m after collision will be given by

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:   Current 'i' is flowing in the rectangular loop placed in the xyz plane as shown in the figure. Find the magnetic moment of the loop :-

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a) 0-100 A
• b) 0-1 A
• c) 0-10 A
• d) 0-1000 A

Answer:  0-100 A

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Unpolarized light falls on two polarizing sheets placed one after another. What should be the angle between pass axis of the sheets so that final transmitted light have one fourth intensity of incident light?

• a) None of these
• b) 0°
• c) 30°
• d) 60°

Answer:  None of these

 More Questions................................................

Question: In a meter bridge experiment, initially the jockey is at null point. Now resistance R₁ & R₂ is interchanged. Shift in the position of jockey is :

• a) 20 cm
• b) 30 cm
• c) 40 cm
• d) 50 cm

Answer: 20 cm

Question:  Moment of inertia of a uniform hollow hemi-sphere about given axis is I_A & I_B then:

• a)

  

• b)

  

• c)

  

• d) Cann't be predicted

Answer:

Question: A hydrogen atom at rest emits a photon during its transition from n = 2 to n = 1. Choose the INCORRECT statement.

• a) Kinetic energy of recoil H-atom will be equal to energy of emitted photon
• b) Kinetic energy of recoil H-atom will be less than 10.2 eV
• c) Energy of emitted photon will be less than 10.2 eV
• d) De-Broglie wavelength of hydrogen atom during recoil will be same as wavelength of emitted photon

Answer: Kinetic energy of recoil H-atom will be equal to energy of emitted photon

Question:  Resolving power of a microscope can NOT be increased by

• a) Decreasing the aperture, keeping focal length same
• b) Decreasing the focal length of objective, keeping aperture same
• c) Decreasing the wavelength of light used
• d) Using "oil immersion objective"

Answer: Decreasing the aperture, keeping focal length same

Question:  Maximum power loss across the circuit can be

• a) 10 W
• b) 100 W
• c) 400 W
• d) 20 W

Answer: 10 W

Question: Brakes are being applied in a car moving with speed 20 m/s which produces a retardation of 5 m/s². The distance travelled by car till it stops is :

• a) 40 m
• b) 20 m
• c) 30 m
• d) 50 m

Answer: 40 m

Question:  If resistance between each dot is R then equivalent resistance between A & B is

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: A particle is revolving in a circle of radius 2m with angular velocity w = t2 – 4t + 8 rad/s. The time when speed of the particle becomes 8 m/s is

• a) 2 sec
• b) 4 sec
• c) 1 sec
• d) 3 sec

Answer: 2 sec

Question: If electronic charge on electron alone is doubled then as per bohr model, K.E. of an e– revolving in the nth orbit becomes

• a) Becomes 4 times
• b) Becomes 16 times
• c) Becomes 2 times
• d) Remains same

Answer: Becomes 4 times

Question: In the given LCR AC circuit, the effective current flowing through the circuit will be

• a) 2A
• b) 4A
• c)

  

• d)

  

Answer: 2A

Question: A monoatomic gas is taken through a process TP^–1/3 = constant. If heat is given to the gas :

• a) Its temperature will decrease
• b) Cann't be predicted
• c) Its temperature will increase
• d) Its temperature remains constant

Answer: Its temperature will decrease

Question: When a load W is hung from a wire of length 2L, it just breaks. Now this wire is completely melted and a new wire of length L is formed. If the load W is hung from this new wire

• a) It will definitely not break
• b) It will definitely break
• c) cannot be predicted
• d) None of these

Answer:  It will definitely not break

Question: A string of length 1m fixed at both ends is vibrating in 3rd overtone. Tension in string is 200 N and linear mass density is 5 gm/m. Frequency of these vibrations is

• a) 400 Hz
• b) 250 Hz
• c) 200 Hz
• d) 300 Hz

Answer: 400 Hz

Question:  Two balls in free space are colliding with each other. Which of the following statement regarding linear momentum conservation of the system is true ?

• a) is conserved
• b) is not conserved
• c) Will depend on type of collision (head on or oblique)
• d) Will depend on type of collision (elastic or inelastic)

Answer: is conserved

Question: Moment of inertia of a semicircular disc of mass M & radius R about the shown axis is:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:  60 ml NaOH solution is required for complete neutralisation of 0.98 gm orthophosphoric acid. The concentration of NaOH solution is

• a) 0.5 M
• b) 1.5 M
• c) 0.167 M
• d) 0.33 M

Answer:  0.5 M

Question:

• a) 3
• b) 1
• c) 2
• d) 4

Answer: 3

Question: The number of 3c-2e bond and 2c-2e bond present in Be₂(CH₃)₄ are _____ and _____respectively

• a) 2, 14
• b) 2, 10
• c) 14, 2
• d) 2, 12

Answer: 2, 14

Question:  A gaseous mixture contains equal masses of dihydrogen gas, dioxygen gas and methane gas at a total pressure of 380 torr. The partial pressure of methane gas is

• a) 40 torr
• b) 30 torr
• c) 20 torr
• d) 320 torr

Answer: 40 torr

Question:

• a)

  

• b)

  

• c)

  

• d) None of these

Answer:

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: For hydrogen like atoms, the average distance of electron from nucleus for the orbitals belonging to the 4th orbit, is minimum for :

• a) 4f
• b) 4d
• c) 4p
• d) 4s

Answer: 4f

Question: Which of the following gives 2°-alcohol as a major product with CH₃MgBr followed by H₂O

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: "On moving left to right ionisation energy increases due to increasing Z_eff" In which of the following pair above statement is NOT CORRECT?

• a) Mg, Al
• b) B, C
• c) Na, Mg
• d) O, F

Answer: Mg, Al

Question:  The molar entropy is maximum for

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Van-Arkel process and Mond's process are used for refining for which of the metals respectively

• a) Ti and Ni
• b) Zr and Ti
• c) Ni and Zr
• d) Ni and Fe

Answer:  Ti and Ni

Question:

• a) 211.5 Kcal / mol
• b) 212.7 Kcal / mol
• c) 213.9 Kcal / mol
• d) 212.1 Kcal / mol

Answer: 211.5 Kcal / mol

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

Which of the following observation is correct for the above experiment?

• a) both are correct
• b) Colour of initial substance and final ppt (if any) is same
• c) CO₂ is evolved
• d) None of these

Answer:  both are correct

Question:

• a) 1000 atm³ M^–3
• b) 1000 atm^–3 M³
• c) 0.001 atm³ M^–3
• d) 1000 atm M^–1

Answer: 1000 atm³ M^–3

Question: Which of the following vitamin is water soluble?

• a) Vitamin-C
• b) Vitamin-D
• c) Vitamin-K
• d) Vitamin-E

Answer: Vitamin-C

Question: Which of the following statement is INCORRECT?

• a) Lu(OH)₃ is more basic compared to La(OH)₃.
• b) Lanthanide carbide (LnC₂) produces on hydrolysis
• c) CeS is used to make Crucible
• d) Misch-metal is used for making Cigarette lighter

Answer: Lu(OH)₃ is more basic compared to La(OH)₃.

Question:

• a) 8 × 10^–12
• b) 8 × 10^–10
• c) 4 × 10^–12
• d) 2 × 10^–12

Answer: 8 × 10^–12

Question:  Which of the following compound does not give Tollen’s test?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: The CORRECT ionisation energy order is

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: The only INCORRECT statement for cubic metallic crystal is

• a) For same edge-length of unit cell, the atomic radius is minimum for SC
• b) For the same atomic radius, the edge length of unit cell is minimum for SC
• c) Co-ordination number is minimum for simple cubic (SC)
• d) Packing efficiency (or fraction) is maximum for FCC

Answer: For same edge-length of unit cell, the atomic radius is minimum for SC

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Which of the following is electron precise type of hydride.

• a) GeH₄
• b) NH₃
• c) CaH₂
• d) CuH

Answer: GeH₄

Question: The boiling point of 0.2m- aq. urea solution is (K_b of water = 0.52 K.kg.mol^–1)

• a) 100.104ºC
• b) –0.104ºC
• c) 101.04ºC
• d) 273.104ºC

Answer:  100.104ºC

Question:

Relation between products A and B is ?

• a) Position isomer
• b) Geometrical isomer
• c) Metamers
• d) Functional isomer

Answer: Position isomer

Question:  Which of the following compound cannot show co-ordination isomerism?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Opticaly inactive amino acid is ?

• a) Glycine
• b) Proline
• c) Alanine
• d) Histidine

Answer: Glycine

Question: NaHSO₃ is heated to produce H₂O and compound 'A'. Which of the following statement is INCORRECT about 'A'.

• a) A has S–O–S type of linkage
• b) 'S' atoms have sp3 hybridisation
• c) 'A' has S–S linkage
• d) One 'S' has one lone pair

Answer: A has S–O–S type of linkage

Question:  Let R₁ and R₂ be two relations on a set A,then choose incorrect statement

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a) 403
• b) none of these
• c) 503
• d) 405

Answer:  403

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a) A must be orthogonal
• b) A must be symmetric
• c) A must be skew symmetric
• d) A can be singular matrix

Answer: A must be orthogonal

Question:

• a)

  

• b)

  

• c)

  

• d) if system has no solution then 'a' must be 1.

Answer:

Question:

• a) 44
• b) 24
• c) 720
• d) 120

Answer: 44

Question:

• a) n(n–1)2^n–3
• b) (n² – 1)2^n–1
• c) (n–1)²2ⁿ
• d) None of these

Answer: n(n–1)2^n–3

Question:

• a)

  

• b) (9900)²
• c) 10⁶
• d) None of these

Answer:  

Question:

• a) tan2¹⁰⁰ – tan1
• b) tan2⁹⁹ – tan1
• c) tan2¹⁰⁰
• d) None of these

Answer:  tan2¹⁰⁰ – tan1

Question:

• a) 1
• b) 0
• c) 2
• d) –1

Answer: 1

Question:

• a)

  

• b)

  

• c)

  

• d) None of these

Answer:

Question:

• a)

  

• b)

  

• c) (–2, –2)
• d) none of these

Answer:

Question:

• a) all the above statements are correct
• b)

  

• c)

  

• d)

  

Answer: all the above statements are correct

Question:

• a) 1
• b) –1
• c) 2
• d) None of these

Answer:  1

Question:

• a)

  

• b)

  

• c) 1
• d) 0

Answer:

Question: The eccentricity of an ellipse whose length of latus rectum is equal to distance between its foci, is

• a) 2sin18°
• b) sin18°
• c) 2cos36°
• d) cos36°

Answer: 2sin18°

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a) 15
• b) 10
• c) 5
• d) 20

Answer:  15

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a) 2
• b) 3
• c) 1
• d) 0

Answer: 2

Question: The area bounded between the parabola y² = 4x and the line 2x + y – 4 = 0 is

• a) 9
• b) 15
• c)

  

• d)

  

Answer: 9

Question:

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a) –9
• b) 6
• c) 4
• d) –3

Answer: –9

Question: The equation of the plane passing through the line of intesection of the planes x + y + z = 5 and 2x + 3y + 4z + 5 = 0 and perpendicular to the plane x + y + z = 5 is

• a) x – z = 20
• b) x + y – 2z = 20
• c) x – z = 10
• d) x + y – 2z = 10

Answer:  x – z = 20

Question:

• a)

  

• b)

  

• c)

  

• d) 2

Answer:

Question:  Three numbers are chosen at random from 1 to 15. The probability that no two numbers are consecutive, is

• a)

  

• b)

  

• c) None of these
• d)

  

Answer:

Question: The mean of 10 terms is 3. If the first term is increased by 1, second by 2 and so on, then the new mean is

• a)

  

• b)

  

• c) 8
• d) 4

Answer:

Question: A flag is standing vertically on a tower of height 1 m. On a point at a distance 2 m from the foot of the tower, the flag and the tower subtend equal angles. The height of the flag is (in meter)

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question:

• a) 1
• b) infinite
• c) 0
• d) 2

Answer: 1

Question:  The negation of the compound statement

• a)

  

• b)

  

• c)

  

• d)

  

Answer: