Tests for Nitric Acid

1. Nitric oxide and Nitrogen dioxide respectively
2. Nitrous oxide and Nitrogen dioxide respectively
3. Nitric oxide and Nitrous oxide respectively
4. Nitrogen dioxide and Nitrous oxide respectively

In brown ring test, which compound is responsible for ring formation?

1. $FeS{O}_4.N{O}_2$

2. $FeS{O}_4.NO$

3. $FeS{O}_4.N_{2}O$

4. $FeS{O}_4.N_2{O}_2$

Which of the following statements is not correct?

1. All metal carbonates react with acid to give a salt, water, and carbon dioxide

2. All metal oxides react with water to give salt and acid

3. Some metals react with acids to give salt and hydrogen

4. Some non-metal oxides react with water to form an acid

Salts of nitric acid is called nitrates.

1. True

2. False

A gas is produced when concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ is added to a solid sodium chloride taken in a test tube and the tube is heated. The gas coming through the delivery tube is passed over a dry litmus paper and then over a moist litmus paper. What would you observe? Explain your answer.

Formation of a brown ring at a junction of two liquids in the brown ring test confirms the presence of :

1. Nitrates

2. Sulphides

3. Carbonates

4. Ammonia

A non-metal X reacts with concentrated nitric acid to form carbon dioxide, water and nitrogen dioxide. What is X?

1. Sulphur

2. Carbon

3. Phosphorous

4. Nitrogen

1. Presence of nitric acid from litmus test and evolution of oxygen from thermal decomposition
2. Confirmation of acidic nature from litmus test and evolution of nitrogen dioxide from thermal decomposition
3. Evolution of nitrogen dioxide from litmus test and evolution of oxygen in thermal decomposition
4. Confirmation of acidic nature from litmus test and evolution of nitrogen oxide from thermal decomposition

Which of the acid is required for the laboratory preparation of nitric acid?

1. Sodium nitrate or potassium nitrate and concentrated sulphuric acid

2. Sodium nitrite or potassium nitrite and dilute sulphuric acid

3. Sodium nitrate or potassium nitrite and concentrated hydrochloric acid

4. Sodium nitrate or potassium nitrite and dilute hydrochloric acid

If a salt produces a brown ring in the brown ring test it is a nitrate salt.

1. False

2. True

(i) What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?

Which of the following reaction is not true for Nitric acid ($HN{O}_3$)?

1. Nitric acid dissociates to produce reddish-brown nitrogen dioxide gas.

   $HN{O}_3\to 2H_{2}O+4N{O}_2+O_2$

2. Reaction of zinc with concentrated nitric acid is given below.

   \(Zn + 4HNO_3 \rightarrow Zn(NO_3)_2 + 2H_2O + 2NO_2

3. The reaction of magnesium with concentrated nitric acid

   $Mg+2HN{O}_3\to Mg(N{O}_3{)}_2+H_2$

4. Reaction of copper with dilute nitric acid is given below.

   \(3Cu + 8HNO_3 \rightarrow 3Cu(NO_3)_2 + 4H_2O + NO

A student has two samples A and B. A fresh solution of $FeS{O}_4$ was added to both the samples. After shaking both the samples well, a compound X was added. It was seen that in sample A a brown ring was formed but in the sample, B no brown ring is formed. Which of the following options could be A, B and X?

1. A= Sodium sulphate, B= Silver chloride and X= ammonia

2. A= Sodium Nitrate, B= Silver chloride and X= sulphuric acid

3. A= Sodium sulphate, B= Silver chloride and X= sulphuric acid

4. A= Sodium Nitrate, B= Silver chloride and X= ammonia

In the preparation of hydrogen chloride from sodium chloride and sulphuric acid, the sulphuric acid used should be concentrated

1. Concentrated

2. Dilute

How can you distinguish between $diluteHCl$ and $diluteHN{O}_3$?

1. By adding a few drops of silver nitrate

2. By adding a few drops of sodium hydroxide

3. By adding a few drops of red litmus

4. By adding a few drops of phenolphthalein

1. Hydrogen and nitrogen oxide
2. Oxygen and nitrogen dioxide
3. Water and nitrogen dioxide
4. Hydrogen and nitrogen dioxide

1. $FeS{O}_4.NO$

2. $FeS{O}_4.N{O}_2$

3. None of the above

4. $FeS{O}_4.N_{2}O$

When lead dioxide reacts wod conc. nitric acid gas evolved is oxygen why not nitrogen dioxide . Nitric acid is also a strong oxidizing agent.

1. Nitrous oxide
2. Nitric oxide
3. Nitrogen dioxide
4. None of the above

How can you distinguish between $diluteHCl$ and $diluteHN{O}_3$?

1. By adding, a few drops of $AgN{O}_3$

2. By adding, a few drops of $NaN{O}_3$

3. By adding, a few drops of $KN{O}_3$

4. By adding, a few drops of $LiN{O}_3$

A white solid(X) on treatment with dilute HCl produces a reddish brown gas. The compound (X) gives

In brown ring test, which compound is responsible for ring formation?

1. $FeS{O}_4.N_{2}O$

2. None of the above

3. $FeS{O}_4.N{O}_2$

4. $FeS{O}_4.NO$

What is the effect of Nitric Acid on methyl orange ?

1. It turns from orange to pink.

2. It turns from pink to orange.

3. It turns from orange to yellow.

4. Does not change colour.