Unit#7: Nitrogen, Sulphur and Metals

1

The main source of nitrogen oxides in air is:

A Volcanoes B Vehicles C Plants D Oceans

2

Which metal reacts vigorously with cold water?

A Copper B Iron C Sodium D Silver

3

Which gas is released when metals react with acids?

A Oxygen B Nitrogen C Hydrogen D Carbon dioxide

4

Which compound is a basic oxide?

A SO₂ B CO₂ C Na₂O D NO₂

5

Amphoteric oxides react with:

A Only acids B Only bases C Both acids and bases D Neither acids nor bases

6

Which catalyst is used in the Contact process?

A Iron B Nickel C Platinum or vanadium(V) oxide D Copper

7

Which metal can displace copper from copper sulphate solution?

A Silver B Gold C Iron D Mercury

8

Which oxide shows amphoteric behavior?

A Zinc oxide B Carbon monoxide C Sulphur dioxide D Sodium oxide

9

Nitric acid present in acid rain is formed from:

A Nitrogen monoxide B Nitrogen dioxide C Ammonia D Nitrogen gas

10

Which gas is primarily responsible for acid rain formation?

A Carbon dioxide B Nitrogen C Sulphur dioxide D Methane

11

Which oxide is basic in nature?

A Carbon dioxide B Sulphur trioxide C Calcium oxide D Nitrogen dioxide

12

The Contact process is used for the manufacture of:

A Nitric acid B Sulphuric acid C Hydrochloric acid D Ammonia

13

The raw materials for the Contact process include:

A SO₂, O₂ and water B SO₃ and water C Sulphur and hydrogen D Nitrogen and hydrogen

14

Which metal is stored under oil to prevent reaction with air?

A Iron B Copper C Sodium D Aluminium

15

Which metal is placed at the top of the reactivity series?

A Gold B Copper C Potassium D Iron

16

Hydrogen gas is evolved when metals react with:

A Cold water B Steam C Dilute acids D Oxygen

17

Haber’s process is used for the manufacture of:

A Nitric acid B Ammonia C Urea D Sulphuric acid

18

Which metal reacts with steam to form metal oxide and hydrogen?

A Copper B Iron C Silver D Gold

19

The reactivity series is arranged on the basis of:

A Density B Atomic number C Reactivity D Color

20

The raw materials for Haber’s process are:

A Nitrogen and oxygen B Hydrogen and oxygen C Nitrogen and hydrogen D Ammonia and nitrogen

21

Photochemical smog is more common in:

A Rural areas B Industrial and urban areas C Forests D Deserts

22

Which oxide is acidic in nature?

A Calcium oxide B Magnesium oxide C Sulphur dioxide D Sodium oxide

23

Acid rain mainly increases acidity of:

A Air only B Soil and water bodies C Metals D Plastic materials

24

Which catalyst is used in Haber’s process?

A Platinum B Iron C Copper D Nickel

25

Which metal reacts with steam but not with cold water?

A Sodium B Calcium C Iron D Potassium