Write the balanced chemical equations for the following chemical reaction. (i) Lead + Copper chloride → Lead chloride + copper (ii) Zinc oxide + carbon → zinc + Carbon monoxide (iii) Hydrogen + chlorine → Hydrogen chloride

Balanced chemical equations for the given reactions are as follows: Lead reacts with copper chloride to form lead chloride and copper. This is an example of displacement reaction. (i) P b + C u C l 2 → P b C l 2 + C u Zinc oxide is reduced by carbon to zinc. This is an example of redox reaction. (ii) Z n O s + C s → Z n s + C O ( s ) Hydrogen and chlorine combines to form hydrogen chloride gas. This is an example of combination reaction. (iii) H 2 g + Cl 2 g → 2 HCl g

E M B I B E

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 20

EASY

10th CBSE

IMPORTANT

Earn 100

Give an example of the following with a balanced equation:
Electrolytic decomposition reaction.

Important Questions on Chemical Reactions and Equations

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 21

Write one equation each for decomposition reaction when energy is supplied in the form of
(i) heat
(ii) light

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 21

Account for the following:
(i) Paint is applied on iron articles.
(ii) Oil and fat containing food items are flushed with nitrogen.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 22

Write the balanced chemical equations for the following reactions:
(i) Natural gas burns in air and combines with oxygen to form carbon dioxide and water.
(ii) During respiration, glucose combines with oxygen and forms carbon dioxide and water along with the release of energy.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 22

When an iron nail is kept in copper sulphate solution, the blue colour of the solution fades and iron nail becomes brownish. Explain.

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 22

What happens when carbon dioxide gas is bubbled through lime water?
(i) In small amount
(ii) In excess

MEDIUM

10th CBSE