HARD
7th ICSE
IMPORTANT
Earn 100

Give the principle and technique involved in the separation of dyes of an ink.

Important Questions on Elements, Compounds & Mixtures

MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 1

The chemical name for dinitrogen oxide [N2O].

MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 1

A compound containing carbon, oxygen & calcium.

MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 1

A metalloid.

EASY
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 2
The positively charged particle of an atom.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 2
The formula of caustic soda.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 2
A homogeneous mixture.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 4
Components in a mixture are present in varying proportions and not in a fixed proportion. Give reason for this statement.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 3 - Elements, Compounds & Mixtures>OBJECTIVE TYPE QUESTIONS>Q 4
Gunpowder is an example of a heterogeneous mixture. Give the reason for this statement.