Chemistry Test

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Chemistry Test - 1

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Weekly Quiz Competition

Question 1
3 / -1

Which of the pairs of gases diffuse at a slower rate than CO₂?

A
H₂& He

B
SO₂& SO₃

C
N₂and CO

D
N₂O and C₃H₈
Question 2
3 / -1

K.E of electron in a particular orbit is 3.4eV. Potential energy is –(minus) _______eV.

A
6.80

B
7.80

C
5.80

D
3.80
Question 3
3 / -1

The correct stability order of hydrides of IA Group elements

A
LiH > NaH > KH > RbH

B
LiH > RbH > NaH > KH

C
LiH < NaH < KH < RbH

D
NaH > KH > RbH > LiH
Question 4
3 / -1

Heat of combustion of benzene is 718 K.cals. When 39 gms of benzene undergoes combustion, the heat liberated is ______ K.cals.

A
349.00

B
355.00

C
352.00

D
359.00
Question 5
3 / -1

6.3 g. of Oxalic acid is in 50 ml solution, then its Molarity and Normality are

A
2 M and 2N

B
0.2 M and 0.4 M

C
1 M and 2N

D
0.1 M and 0.2 N
Question 6
3 / -1

At 27°C the K_p value for the reaction : PCl₅ PCl₃ + Cl₂ is 0.65. Its K_c is ______.

A
0.03

B
0.02

C
0.05

D
0.07
Question 7
3 / -1

The number of moles of electrons required to deposit 36 g of Al from an aqueous solution of

A
3.00

B
4.00

C
6.00

D
8.00
Question 8
3 / -1

The unit of rate constant obeying the rate expression r = K [A]¹ [B]^2/3 is

A

B

C

D
None of these
Question 9
3 / -1

The following graph is obtained for physisorption of a gas as a function of pressure at different temperatures. The correct order of temperatures is

A

B

C

D
Question 10
3 / -1

Which is incorrect statement?

A
I₁ of M_(g) is 100eV

B
I₁ of M_(g) is 150eV

C
I₂ of M_(g) is 250eV

D
I₂ of M_(g) is 150eV