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

(#M40027785) IIT-JEE QUESTION 2011 question Keep an EYE

A silver sphere of radius 1 cm and work function 4.7 eV is suspended from an insulating thread in freespace.
It is under continuous illumination of 200 nm wavelength light. As photoelectrons are emitted, the
sphere gets charged and acquires a potential. The maximum number of photoelectrons emitted from the
sphere is A ´ 10^z (where 1 < A < 10). The value of ‘Z’ is

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(#M40028119) IIT-JEE QUESTION 2007 Question Keep an EYE

While Fe3+ is stable, Mn3+ is not stable in acid solution because
(A) O2 oxidises Mn2+ to Mn3+ (B) O2 oxidises both Mn2+ and Fe2+ to Fe3+
(C) Fe3+ oxidizes H2O to O2 (D) Mn3+ oxidises H2O to O2

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(#M40027958) IIT-JEE QUESTION 2012 question Keep an EYE

Let P = [aij] be a 3 × 3 matrix and let Q = [bij], where bij = 2i+jaij for 1  i, j  3. If the determinant of P is 2, then
the determinant of the matrix Q is

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(#M40027842) IIT-JEE QUESTION 2011 question Keep an EYE

Which of the following exists as covalent crystals
in the solid state ?
(1) Sulphur (2) Phosphorus
(3) Iodine (4) Silicon

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(#M40027926) IIT-JEE QUESTION 2010 question Keep an EYE

A diatomic ideal gas is compressed adiabatically to 1/32
of its initial volume. In the initial temperature of
the gas is Ti (in Kelvin) and the final temperature is aTi, the value of a is

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(#M40027371) IIT-JEE QUESTION Unit and Dimension Keep an EYE

Round off the following numbers to three
significant digits
(a) 15462
(b) 14.745
(c)14.750

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(#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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(#M40027982) IIT-JEE QUESTION 2012 question Keep an EYE

The shape of XeO2F4 molecule is
option
(A) trigonal bipyramidal
(B) square plannar
(C) tetrahedral
(D) see-saw

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