Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 56

EASY

7th CBSE

IMPORTANT

Earn 100

Identify physical and chemical changes amongst the following: Rusting of iron.

Important Questions on Atomic Structure and Transformation of Matter

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 56

Identify physical and chemical changes amongst the following: Blackening of silverware.

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 57

Why should a chemical equation be balanced?

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 58

Dissolution of calcium oxide in water is which type of reaction?

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 59

In a double decomposition reaction, one of the products is insoluble. What type of reaction is that?

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 60

Potassium chlorate on strong heating gives potassium chloride and oxygen. What type of reaction is this?

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 61

Balance the following chemical equations:

{NH}_{3} + {Br}_{2} \to N_{2} + {NH}_{4} Br

.

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 61

Balance the following chemical equations:

{FeS}_{2} + O_{2} \to {Fe}_{2} O_{3} + {SO}_{2}

.

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 2 - Atomic Structure and Transformation of Matter>PRACTICE QUESTIONS (CLASSROOM WING)>Q 62

In the following table, some compounds are listed. In each case, identify the positive and negative radicals present in the compound.

No.	Compounds	Positive radical	Negative radical
(i)	${CaSiO}_{3}$