Chemistry Test

Question 1
1 / -0

Which one of the following reaction is incorrect for primary amines?

A
On reaction with nitrous acid alkylamines produce alcohol

B
On reaction with nitrous acid arylamines produce phenol

C
Alkylamines are more basic than ammonia

D
Alkylamines are more basic than arylamines

Question 2
1 / -0

What is the atomic number of element of period 3 and group 17 of the Periodic Table?

A
10

B
04

C
17

D
21

Question 3
1 / -0

Phenol is also known as __________.

A
Carboxylic acid

B
Carbolic acid

C
Benzoic acid

D
None of the above

Question 4
1 / -0

A sample of \(\mathrm{CaCO}_3\) and \(\mathrm{MgCO}_3\) weighed \(2.21 \mathrm{~g}\) is ignited to constant weight of \(1.152 \mathrm{~g}\). The composition of mixture is :

(Given molar mass in \(\mathrm{gmol}^{-1} \left.\mathrm{CaCO}_3: 100, \mathrm{MgCO}_3: 84\right)\)

A
\(1.187 \mathrm{gCaCO}_3+1.023 \mathrm{gMgCO}_3\)

B
\(1.023 \mathrm{gCaCO}_3+1.023 \mathrm{gMgCO}_3\)

C
\(1.187 \mathrm{gCaCO}_3+1.187 \mathrm{gMgCO}_3\)

D
\(1.023 \mathrm{gCaCO}_3+1.187 \mathrm{gMgCO}_3\)

Question 5
1 / -0

A solution of glucose \(\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)\) in water is labelled as \(10 \%\) by weight. What would be the molality of the solution?

(Molar mass of glucose \(\left.=180 \mathrm{~g} \mathrm{~mol}^{-1}\right)\)

A
0.4

B
0.6

C
0.7

D
0.5

Question 6
1 / -0

Assertion: The cell potential of mercury cell is \(1.35 {~V},\) which remains constant.

Reason: In mercury cell, the electrolyte is a paste of \({K} {OH}\) and \({ZnO}\).

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

C
Assertion is correct but Reason is incorrect.

D
Assertion is incorrect but Reason is correct

Question 7
1 / -0

Which one of the following statements is NOT true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?

A
The area under the distribution curve remains the same as under the lower temperature

B
The distribution becomes broader

C
The fraction of the molecules with the most probable speed increases

D
The most probable speed increases

Question 8

1 / -0

Data given for the following reaction is as follows.

\(\mathrm{FeO}(\mathrm{s})+\mathrm{C}_{\text {(graphite) }} \rightarrow \mathrm{Fe}(\mathrm{s})+\mathrm{CO}(\mathrm{g})\)

Substance	\(\mathbf{\Delta} \mathbf{H}^{\circ}\left(\mathbf{k J ~}^{-1} \mathbf{~ m o l})\right.\)	\(\mathbf{\Delta} \mathbf{S}^{\circ}\left(\mathbf{J} \mathbf{~ m o l}^{-1} \mathbf{K}^{-1}\right)\)
\(\mathrm{FeO}(\mathrm{s})\)	-266.3	57.49
\(\mathrm{C}_{\text {(graphite) }}\)	0	5.74
\(\mathrm{Fe}(\mathrm{s})\)	0	27.28
\(\mathrm{CO}(\mathrm{g})\)	-110.5	197.6

The minimum temperature in K at which the reaction becomes spontaneous is......... (Integer answer)

864

964 -864

-964

Question 9
1 / -0

If the bond energies of \(\mathrm{H}-\mathrm{H}, \mathrm{Br}-\mathrm{Br}\), and \(\mathrm{H}-\mathrm{Br}\) are 433,192 and \(364 \mathrm{~kJ} \mathrm{~mol}^{-1}\) respectively, the \(\Delta \mathrm{H}^0\) for the reaction \(\mathrm{H}_{2(\mathrm{~g})}+\mathrm{Br}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{HBr}_{(\mathrm{g})}\) is

A
\(-261 \mathrm{~kJ}\)

B
\(+103 \mathrm{~kJ}\)

C
\(+261 \mathrm{~kJ}\)

D
\(-103 \mathrm{~kJ}\)

Question 10
1 / -0

Identify disproportionation reaction.

A
\(\mathrm{CH}_{4}+2 \mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O}\)

B
\(\mathrm{CH}_{4}+4 \mathrm{Cl}_{2} \longrightarrow \mathrm{CCl}_{4}+4 \mathrm{HCl}\)

C
\(2 \mathrm{~F}_{2}+2 \mathrm{OH}^{-} \rightarrow 2 \mathrm{~F}^{-}+\mathrm{OF}_{2}+\mathrm{H}_{2} \mathrm{O}\)

D
\(2 \mathrm{NO}_{2}+2 \mathrm{OH}^{-} \rightarrow \mathrm{NO}_{2}^{-}+\mathrm{NO}_{3}^{-}+\mathrm{H}_{2} \mathrm{O}\)

Submit Test

Chemistry Test ...

Question 1

On reaction with nitrous acid alkylamines produce alcohol

On reaction with nitrous acid arylamines produce phenol

Alkylamines are more basic than ammonia

Alkylamines are more basic than arylamines

Question 2

10

04

17

21

Question 3

Carboxylic acid

Carbolic acid

Benzoic acid

None of the above

Question 4

\(1.187 \mathrm{gCaCO}_3+1.023 \mathrm{gMgCO}_3\)

\(1.023 \mathrm{gCaCO}_3+1.023 \mathrm{gMgCO}_3\)

\(1.187 \mathrm{gCaCO}_3+1.187 \mathrm{gMgCO}_3\)

\(1.023 \mathrm{gCaCO}_3+1.187 \mathrm{gMgCO}_3\)

Question 5

0.4

0.6

0.7

0.5

Question 6

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

Assertion is correct but Reason is incorrect.

Assertion is incorrect but Reason is correct

Question 7

The area under the distribution curve remains the same as under the lower temperature

The distribution becomes broader

The fraction of the molecules with the most probable speed increases

The most probable speed increases

Question 8

864

964

-864

-964

Question 9

\(-261 \mathrm{~kJ}\)

\(+103 \mathrm{~kJ}\)

\(+261 \mathrm{~kJ}\)

\(-103 \mathrm{~kJ}\)

Question 10

\(\mathrm{CH}_{4}+2 \mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O}\)

\(\mathrm{CH}_{4}+4 \mathrm{Cl}_{2} \longrightarrow \mathrm{CCl}_{4}+4 \mathrm{HCl}\)

\(2 \mathrm{~F}_{2}+2 \mathrm{OH}^{-} \rightarrow 2 \mathrm{~F}^{-}+\mathrm{OF}_{2}+\mathrm{H}_{2} \mathrm{O}\)

\(2 \mathrm{NO}_{2}+2 \mathrm{OH}^{-} \rightarrow \mathrm{NO}_{2}^{-}+\mathrm{NO}_{3}^{-}+\mathrm{H}_{2} \mathrm{O}\)

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