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Frequently Asked IIT-JEE Latest Exam Pattern - IIT-JEE Sample Question with Solutions Page 11

(#M40027906) IIT-JEE QUESTION 2010 question Keep an EYE

Assuming that Hund’s rule is violated, the bond order and magnetic nature of the diatomic molecule B2 is
(A) 1 and diamagnetic (B) 0 and diamagnetic
(C) 1 and paramagnetic (D) 0 and paramagnetic.

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(#M40028120) IIT-JEE QUESTION 2007 Question Keep an EYE

Among the following, identify the correct statement.
(A) Chloride ion is oxidized by O2 (B) Fe2+ is oxidized by iodine
(C) Iodide ion is oxidized by chlorine (D) Mn2+ is oxidized by chlorine

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(#M40027780) IIT-JEE QUESTION 2011 question Keep an EYE

Two solid spheres A and B of equal volumes but of different densities dA and
dB are connected by a string. They are fully immersed in a fluid of density dF.
They get arranged into an equilibrium state as shown in the figure with a
tension in the string. The arrangement is possible only if
(A) dA < dF (B) dB > dF
(C) dA > dF (D) dA + dB = 2dF

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(#M40028129) IIT-JEE QUESTION 2007 Question Keep an EYE

Among cellulose, poly(vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular
force of attraction is weakest is
(A) Nylon (B) Poly(vinyl chloride)
(C) Cellulose (D) Natural Rubber

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(#M40021805) IIT-JEE QUESTION matrix Keep an EYE

For 3i^3 matrices M and N, which of the following statement(s) is (are) NOT correct ?
(A) NTMN is symmetric or skew symmetric, according as M is symmetric or skew symmetric
(B) MN, NM is skew symmetric for all symmetric matrices M and N
(C) MN is symmetric for all symmetric matrices M and N
(D) (adj M) (adj N) = adj(MN) for all invertible matrices M and N

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(#M40027858) IIT-JEE QUESTION 2010 question Keep an EYE

Among the following, the intensive property is (properties are)
(A) molar conductivity (B) electromotive force
(C) resistance (D) heat capacity

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(#M40028105) IIT-JEE QUESTION 2007 Question Keep an EYE

In the experiment to determine the speed of sound using a resonance column,
(A) prongs of the tuning fork are kept in a vertical plane
(B) prongs of the tuning fork are kept in a horizontal plane
(C) in one of the two resonances observed, the length of the resonating air column is close to the wavelength of sound
in air
(D) in one of the two resonances observed, the length of the resonating air column is close to half of the wavelength of
sound in air

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(#M40027927) IIT-JEE QUESTION 2010 question Keep an EYE

It is found that the excitation frequency from ground to the first excited state of rotation for the CO
molecule is close to
4/π * 10^11 Hz Then the moment of inertia of CO molecule about its center of mass is
close to

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(#M40028143) IIT-JEE QUESTION 2008 Question Keep an EYE

Two small particles of equal masses start moving in opposite directions from a point
A in a horizontal circular orbit. Their tangential velocities are v and 2v respectively,
as shown in the figure. Between collisions, the particles move with constant speeds.
After making how many elastic collisions, other than that at A, these two particles
will again reach the point A?
(A) 4 (B) 3
(C) 2 (D) 1

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(#M40027855) IIT-JEE QUESTION 2010 question Keep an EYE

The bond energy (in kcal mol–1) of a C—C single bond is approximately
(A) 1 (B) 10
(C) 100 (D) 1000

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