''Respiration is an exothermic process." Comment.

Important Questions on Chemical Reactions and Equations

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 8

Why photosynthesis is considered as an endothermic reaction? Explain.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 9

Give the word equation for the following and then balance the equation:
Sodium carbonate combines with hydrogen chloride acid to form sodium chloride, water and carbon dioxide.

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 9

Give the word equation for the following and then balance the equation:
Zinc metal reacts with hydrochloric acid to produce a solution of zinc chloride and hydrogen gas.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 10

Define the terms oxidation and reduction in terms of gain or loss of hydrogen with one example each.

HARD

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 11

What are the various types of chemical reactions? Give an example for each.

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 12

What happens when zinc granules react with dilute sulphuric acid?

HARD

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 12

How would you say that a chemical reaction has taken place? Give an example.

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 13

Define a precipitate.