Chemistry Test

Result

Chemistry Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

What will be the direction in the following reaction upon increasing pressure of the system? N₂O₄ (g) ⇌ 2NO₂ (g)

A
Formation of N₂O₄ favored

B
Formation of NO₂ favored

C
No change in reaction

D
Increase in equilibrium constant
Question 2
1 / -0

When solid NH₄ Cl is added to NH₄ OH solution, the equilibrium shifts to the left, due to

A
common ion effect

B
buffer formation

C
neutralization

D
keep pH constant
Question 3
1 / -0

The obtained slope in the Arrhenius plot of logk Vs 1/T is equal to

A

B

C

D
Question 4
1 / -0

If the first order rate constant for a reaction is 6.93 × 10⁻⁴ s⁻¹ , calculate the half life for the reaction.

A
100 s

B
200 s

C
500 s

D
1000 s
Question 5
1 / -0

The standard E _{red values of} ⁰A, B and C are 0V, +0.68V and −0.50V, respectively. The order of their power as reducing agent is

A
B > A > C

B
A > B > C

C
C > A > B

D
C > B > A
Question 6
1 / -0

If the ratio of composition of oxidised and reduced species in an electrochemical cell is given as the correct potential difference will be

A

B

C

D
Question 7
1 / -0

If we pass 1 Coulomb of charge in an electrolytic cell, then 10mg of substance will get deposited. Calculate the gram equivalent of the substance.

( 1 Faraday = 96500C )

A
9.65

B
96.5

C
965

D
9650
Question 8
1 / -0

The packing fraction efficiency of a simple cubic lattice is close to

A
34.0%

B
52.4%

C
68.0%

D
74.0%
Question 9
1 / -0

How many NaCl are in the unit cell of sodium chloride crystal?

A
1

B
2

C
3

D
4
Question 10
1 / -0

Alkali halides do not show Frenkel defect because

A
cations and anions have high coordination number

B
cations and anions have low coordination number

C
anions cannot be accommodated in voids

D
cations and anions have almost equal size