Chemistry Test

Question 1
1 / -0

What are Oxo-Acids?

A
Acid containing Oxygen

B
Acid containing Sulphur

C
Acid containing Carbon

D
None of the Above

Question 2
1 / -0

Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?

A
\({Ag}_{2} {SO}_{4}\)

B
\(C u F_{2}\)

C
\(Z n F_{2}\)

D
\({Cu}_{2} {Cl}_{2}\)

Question 3
1 / -0

The enthalpy change on freezing of \(1 \mathrm{~mol}\) of water at \(5^{\circ} \mathrm{C}\) to ice at \(-5^{\circ} \mathrm{Cis}\) :

\(\left(\text { Given } \Delta_{\text {fis }} \mathrm{H}=6 \mathrm{~kJ} \mathrm{~mol}^{-1} \text { at } 0^{\circ} \mathrm{C}\right. \text {, } \)

\(\mathrm{C}_{\mathrm{p}}\left(\mathrm{H}_2 \mathrm{O}, 1\right)=75.3 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1} \)

\(\left.\mathrm{C}_{\mathrm{p}}\left(\mathrm{H}_2 \mathrm{O}, \mathrm{s}\right)=36.8 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right)\)

A
\(5.44 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

B
\(5.81 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

C
\(6.56 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

D
\(6.00 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

Question 4
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How many structural isomers are possible for \(\mathrm{C}_{3} \mathrm{H}_{9} \mathrm{~N}\) ?

A
\(4\)

B
\(2\)

C
\(5\)

D
\(3\)

Question 5
1 / -0

Calculate energy of one mole of photons of radiation whose frequency is \(5 \times 10^{14}\) \(\mathrm{Hz}\).

A
\(199.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

B
\(201.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

C
\(193.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

D
\(199.51 \mathrm{~J} \mathrm{~mol}\)

Question 6
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A system is said to be in thermodynamic equilibrium if the system is in:

A
Chemical equilibrium

B
Thermal, chemical and mechanical equilibrium

C
Thermal equilibrium

D
Mechanical equilibrium

Question 7
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Hydrogen gas is not obtained when zinc reacts with:

A
Cold water

B
\(\mathrm{H}_{2} \mathrm{SO}_{4}\)

C
Dil.HC1

D
Hot \(20 \% \mathrm{NaOH}\) solution

Question 8
1 / -0

In which of the preparation process of dihydrogen, the syn gas is produced?

A
Electrolysis of water

B
Electrolysis of brine solution

C
Reaction of Zn metal with NaOH

D
Reaction of steam with coke

Question 9
1 / -0

A solid has a ‘BCC’ structure. If the distance of nearest approach between two atoms is 1.73Å, the edge length of the cell is:

A
\(314.20 {~pm}\)

B
\(1.41 {~pm}\)

C
\(200 {~pm}\)

D
\(215 {~pm}\)

Question 10
1 / -0

The oxidation number of \(\mathrm{Cr}\) in \(\mathrm{Cr} O_{5}\) which has the following structure, is:

A

+4

B

+5

C

+6

D

+3

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Chemistry Test ...

Question 1

Acid containing Oxygen

Acid containing Sulphur

Acid containing Carbon

None of the Above

Question 2

\({Ag}_{2} {SO}_{4}\)

\(C u F_{2}\)

\(Z n F_{2}\)

\({Cu}_{2} {Cl}_{2}\)

Question 3

\(5.44 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(5.81 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(6.56 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(6.00 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

Question 4

\(4\)

\(2\)

\(5\)

\(3\)

Question 5

\(199.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(201.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(193.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(199.51 \mathrm{~J} \mathrm{~mol}\)

Question 6

Chemical equilibrium

Thermal, chemical and mechanical equilibrium

Thermal equilibrium

Mechanical equilibrium

Question 7

Cold water

\(\mathrm{H}_{2} \mathrm{SO}_{4}\)

Dil.HC1

Hot \(20 \% \mathrm{NaOH}\) solution

Question 8

Electrolysis of water

Electrolysis of brine solution

Reaction of Zn metal with NaOH

Reaction of steam with coke

Question 9

\(314.20 {~pm}\)

\(1.41 {~pm}\)

\(200 {~pm}\)

\(215 {~pm}\)

Question 10

+4

+5

+6

+3

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