Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

JEE Chemistry Solved Question Paper 2019

Multiple Choice Questions

For the following reactions, equilibrium constans are given:

S(s) + O₂(g) $⇌$ SO₂(g); K₁ = 10⁵²

2S(s) + 3O₂(g) $⇌ 2$ SO₃(g); K₂ = 10¹²⁹

The equilibrium constant for the reaction,

2SO₂(s) + O₂(g) $⇌ 2$ SO₃(g)

10¹⁸¹
10⁷⁷
10¹⁵⁴
10²⁵

2.
The correct statement about ICl₅ and ICl $_{4}^{-}$ is:

ICl₅ is trigonal bipyramidal and ICl $_{4}^{-}$ is tetrahedral

ICl₅ is square pyramidal and ICl $_{4}^{-}$ is tetrahedral

both are isostructural

ICl₅ is square pyramidal and ICl $_{4}^{-}$ is square planar.

ICl₅ is square pyramidal and ICl $_{4}^{-}$ is square planar.

ICl₅ have 4 B.P and 1 L.P. It is square pyramidal. ICl $_{4}^{-}$ have 4 B.P. and 2 L.P. The two L.P occupy opposite corners of octahedral. So it square planar.

Among the following molecules/ ions,

$C_{2}^{2 -}, N_{2}^{2 -}, O_{2}^{2 -}, O_{2}$

Which one is diamagnetic and has the shortest bond length?

$O_{2}^{2 -}$
C $_{2}^{2 -}$
N $_{2}^{2 -}$
O₂

The percentage composition of carbon by mole in methane is :

The strength of 11.2 volume solution of H₂O₂ is: [Given that molar mass of H=1 g mol^–1 and O=16 g mol^–1]

1.7%
34%
13.6%
3.4%

If p is the momentum of the fastest electron ejected from a metal surface after the irradiation of light having wavelength λ, then for 1.5 p momentum of the photoelectron, the wavelength of the light should be: (Assume kinetic energy of ejected photoelectron to be very high in comparison to work function) :

$\frac{2}{3} λ$
$\frac{4}{9} λ$
$\frac{3}{4} λ$
$\frac{1}{2} λ$

5 moles of an ideal gas at 100 K are allowed to undergo reversible compression till its temperature becomes 200 K. If CV = 28 J K–1 mol–1, calcuIate ΔU and ΔPV for this process. ( R= 8.0 JK^-1 mol^-1 )