What is meant by thermal decomposition? Give an example.

Important Questions on Atomic Structure and Transformation of Matter

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 72

Define double decomposition reaction. Give an example.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 73

What is a chemical displacement reaction? Mention the condition required for it.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 74

Distinguish between cations and anions.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 75

In the following table, some commonly used positive and negative radicals are listed. Use the criss-cross method to obtain the formulae of the compound that is formed using the given radicals. Name the compound thus obtained.

No.	Positive radicals	Negative radials	Formula	Name of the compound
1	${Al}^{3 +}$	${PO}_{4}^{3 -}$
2	${Ca}^{2 +}$	${NO}_{3}^{-}$
3	${NH}_{4}^{+}$	${SO}_{4}^{2 -}$
4	${Al}^{3 +}$	$C^{4 -}$