A chemical reaction is characterised by:

Important Questions on Chemical Reactions and Equations

HARD

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 2

Heat energy absorbed during a chemical reaction is represented in a complete chemical equation towards the products by

HARD

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 3

Which one amongst the following is a complete balanced equation?

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 4

Regarding balanced chemical equation which one of the following is incorrect?

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 5

Which one of the following processes involve chemical reactions?

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 1

What do you understand by the term chemical equation?

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 2

What do you understand by the term balanced chemical equation?

EASY

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 3

Why should a magnesium ribbon be cleaned before burning it in air?

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 1 - Chemical Reactions and Equations>EXERCISE 1A>Q 4

Write a balanced equation for the word equation given below.
Ammonia gas reacts with oxygen in the presence of platinum at $900°\mathrm{C}$ to form nitric oxide gas and steam.