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Frequently Asked IIT-JEE Latest Exam Pattern - IIT-JEE Sample Question with Solutions Page 41

(#M40027762) IIT-JEE QUESTION Physics Keep an EYE

Four solid spheres each of diameter 5 cm and mass 0.5 kg are placed with their centers at the corners of
a square of side 4 cm. The moment of inertia of the system about the diagonal of the square is N ´ 10^-4 kgm2,
then N is

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(#M40027760) IIT-JEE QUESTION Physics Keep an EYE

An electron and a proton are moving on straight parallel paths with same velocity. They enter a semiinfinite
region of uniform magnetic field perpendicular to the velocity. Which of the following
statement(s) is / are true?
(A) They will never come out of the magnetic field region.
(B) They will come out travelling along parallel paths.
(C) They will come out at the same time.
(D) They will come out at different times.

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(#M40027759) IIT-JEE QUESTION Physics Keep an EYE

A composite block is made of slabs A, B, C, D and E of
different thermal conductivities (given in terms of a
constant K) and sizes (given in terms of length, L) as
shown in the figure. All slabs are of same width. Heat
‘Q’ flows only from left to right through the blocks. Then
in steady state
(A) heat flow through A and E slabs are same.
(B) heat flow through slab E is maximum.
(C) temperature difference across slab E is smallest.
(D) heat flow through C = heat flow through B + heat flow through D.

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(#M40027757) IIT-JEE QUESTION Physics Keep an EYE

A metal rod of length ‘L’ and mass ‘m’ is pivoted at one end. A thin disk of mass
‘M’ and radius ‘R’ ( angular frequency for case B.
(D) Angular frequency for case A < Angular frequency for case B.

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(#M40027755) IIT-JEE QUESTION Physics Keep an EYE

5.6 liter of helium gas at STP is adiabatically compressed to 0.7 liter. Taking the initial temperature to be
T1, the work done in the process is

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(#M40027747) IIT-JEE QUESTION Chemistry Keep an EYE

A decapeptide (Mol. Wt. 796) on complete hydrolysis gives glycine (Mol. Wt. 75), alanine and
phenylalanine. Glycine contributes 47.0% to the total weight of the hydrolysed products. The number of
glycine units present in the decapeptide is

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(#M40027746) IIT-JEE QUESTION Chemistry Keep an EYE

The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)
(A) Adsorption is always exothermic
(B) Physisorption may transform into chemisorption at high temperature
(C) Physiosorption increases with increasing temperature but chemisorption decreases with increasing
temperature
(D) Chemisorption is more exothermic than physisorption, however it is very slow due to higher energy of
activation

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(#M40027745) IIT-JEE QUESTION Chemistry Keep an EYE

According to kinetic theory of gases
(A) collisions are always elastic
(B) heavier molecules transfer more momentum to the wall of the container
(C) only a small number of molecules have very high velocity
(D) between collisions, the molecules move in straight lines with constant velocities

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(#M40027740) IIT-JEE QUESTION Chemistry Keep an EYE

Bombardment of aluminium by a-particle leads to its artificial disintegration in two ways, (i) and (ii) as
shown. Products X, Y and Z respectively are,
(ii) Al¾¾® P + Y 27 30
13 15
(i)
30Si + X
14 30Si + Z

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(#M40027739) IIT-JEE QUESTION Chemistry Keep an EYE

Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solution of density 1.15 g/mL. The
molarity of the solution is
(A) 1.78 M (B) 2.00 M
(C) 2.05 M (D) 2.22 M

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