Chemistry Test

Result

Chemistry Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is the strongest acid?

A
CF₃COOH

B
CBr₃COOH

C
CH₃COOH

D
CCl₃COOH
Question 2
1 / -0

Which relation is correct ?

A
∆G = ∆H - T∆S

B
∆G = ∆H + T∆S

C
∆G = T∆S - ∆H

D
∆G = ∆H - sdT
Question 3
1 / -0

Chemical equilibrium is dynamic in nature, because

A
the equilibrium is maintained rapidly

B
the concentration of reactants and products are constant but different

C
both forward and backward reactions occur at all times with same speed

D
the concentration of reactants and products becomes same at equilibrium

Solution

Solution

The two opposite processes, forward reaction and reverse reaction, keep on occurring in it all the time but at exactly equal rates (or equal speeds)
A chemical reaction does not stop after reaching the equilibrium state, only the rate of the forward and the reverse reactions become equal at the equilibrium state
Question 4
1 / -0

The order of reaction is decided by

A
temperature

B
mechanism of reaction as well as relative concentration of reactants

C
molecularity

D
pressure
Question 5
1 / -0

The bond dissociation energies of H₂,Cl₂ and HCl are 104, 58 and 103 kcal respectively. The enthalpy of formation of HCl gas will be

A
-44 kcal

B
-88 kcal

C
-22 kcal

D
-11 kcal

Solution

Solution
Question 6
1 / -0

Soaps are classified as

A
Ether

B
Salts of fatty acids

C
Carbohydrates

D
None of these
Question 7
1 / -0

The total number of acyclic isomers including stereoisomers of C₄H₇Cl are

A
12

B
9

C
10

D
13

Solution

Solution

The total number of isomers, including the stereo-isomers, with formula C₄H₇Cl is 12. Out of this, 3 are cyclic and the remaining are acyclic.
Question 8
1 / -0

The charge required to liberate 112 ml of hydrogen from acidified water is

A
0.1 F

B
2 F

C
965 C

D
96500 C

Solution

Solution
Question 9
1 / -0

Which of the following ions are paramagnetic in character?

A
Zn²⁺

B
Cu⁺

C
Ni²⁺

D
Ag⁺

Solution

Solution

Ni²⁺ is paramagnetic in nature as it has unpaired electrons.
Question 10
1 / -0

The value of gas constant per degree per mole is approximately

A
1 cal

B
2 cal

C
3 cal

D
4 cal

Solution

Solution

The value of gas constant per degree per mol is approximately 2 cal.

Note:

In the equation of state of an ideal gas Pv=nRT the value of universal gas constant would depend only on the units of measurement. It is independent of the nature of the gas, the pressure of the gas and the temperature of the gas.

For example:-R=8.314J/mol k

R=1.99 cal/mol /k