Chemical Properties of Nitric Acid

Q.

Which of the following is the reddish-brown gas released during the decomposition of nitric acid?

1. Hydrogen

2. Nitric oxide

3. Nitrogen dioxide

4. Nitrous oxide

Q.

Which of the gas is evolved when zinc reacts with the nitric acid?

1. Nitrous oxide

2. Nitrogen dioxide

3. Ammonia

4. Nitric oxide

Q.

The phenol gives characteristic colouration with?

1. Iodine solution

2. Bromine water

3. Aqueous ${\mathrm{FeCl}}_3$solution

4. Ammonium hydroxide

Q.

How do you make a nitration mixture?

Q.

Nitric acid cannot be concentrated beyond 68% by the distillation of dilute solution of $HN{O}_3$

1. True

2. False

Q.

Which among the given is formed when zinc reacts with dilute nitric acid?

1. Hydrogen gas

2. Nitrogen dioxide

3. Nitric oxide

4. Nitrous oxide

Q.

Nitric acid occurs in ___.

1. Free state only

2. Combined state only

3. Both in free and combined state

4. None of these

Q.

Nitric acid acts as a good solvent for a large number of metals. This property of nitric acid helps in:

1. Reduction

2. Etching alphabets and pictures on metals

3. Rocket fuel

4. Oxidation

Q.

Explain why nitric acid kept in a reagent bottle for a long time turns brown.

Q.

___% nitric acid is obtained by distilling 68% nitric acid with Conc.$H_{2}S{O}_4$.

Q.

In the laboratory preparation of nitric acid, it can be obtained below ${200}^{\circ }$C or above ${200}^{\circ }$C, but the lower temperature is preferred. Which of the following reason(s) is /are correct?

1. i only

2. ii only

3. i and ii

4. Both of the above reasons are wrong.

Q.

Aqua regia is a mixture of _____.

1. 2 parts of HCl and 1 part of HNO₃.

2. 4 parts of HCl and 5 part of HNO₃.

3. 3 parts of HCl and 1 part of HNO₃.

4. 1 parts of HCl and 3 part of HNO₃.

Q. Zn + 2H₂SO₄ (conc.) → ? is an example of which property of sulphuric acid?

1. Oxidizing agent
2. Reducing Agent
3. Volatile
4. Non-Volatile

Q.

What happens when Iron reacts with a solution of concentrated nitric acid?

1. Ferric Nitrite is formed.

2. Ferric Nitrate is formed.

3. Ferrous Hydroxide is formed.

4. Ferric Oxide is formed.

Q. Metal reacts with nitric acid to form __________ and __________.

1. Salt and nitrogen oxide
2. Salt and carbon dioxide gas
3. Salt and nitrogen gas
4. Salt and water

Q.

The oxidizing properties of Nitric Acid is due to

1. Nascent Hydrogen

2. Nascent Oxygen

3. Nascent Chlorine

4. The Nitrate Ion

Q. What is the colour of Nitric Acid?

1. Pure Nitric Acid (conc) is colourless and commercial Nitric Acid is yellowish brown.
2. colourless
3. Yellowish Brown
4. None of the above

Q.

Why does pure nitric acid take on a yellowish-brown colour when exposed to light?

Q.

What is the effect of Nitric Acid on moist litmus?

1. Changes colour from blue to yellow.

2. Changes colour from yellow to red.

3. Changes colour from blue to red.

4. Changes colour from yellow to blue..

Q.

Which of the following reactions shows the acidic character of nitric acid?

1. $C+4HN{O}_3\to C{O}_2+2H_{2}O+4N{O}_2$

2. $K_{2}O+2HN{O}_3\to 2KN{O}_3+H_{2}O$

3. $S+6HN{O}_3\to H_{2}S{O}_4+2H_{2}O+6N{O}_2$

4. $ZnO+2HN{O}_3\to Zn(N{O}_3{)}_2+H_{2}O$

Q.

Which of the following is obtained on decomposition of moderately concentrated $HN{O}_3$

1. $NO$

2. $N_2{O}_3$

3. $N_2{O}_4$

4. $N_2{O}_5$

Q.

Fuming nitric acid has?

1. $N{O}_2$ dissolved in Conc.$HN{O}_3$.

2. $NO$ dissolved in Conc.$HN{O}_3$.

3. $2N{O}_3$ dissolved in Conc.$2HCl$.

4. $N{O}_3$ dissolved in Conc.$HCl$.

Q.

Why nitric acid is not used is not used for the preparation of hydrogen gas?

1. Because it is monobasic

2. Because it is a strong oxidizing agent.

3. Because it is a strong reducing agent.

4. Because it is dibasic

Q.

Nitric acid turns into a ___ colour solution when exposed to light.