Dhiren M Doshi Solutions for Chapter: Physical and Chemical Changes, Exercise 3: Exercise

Author:Dhiren M Doshi

Dhiren M Doshi Science Solutions for Exercise - Dhiren M Doshi Solutions for Chapter: Physical and Chemical Changes, Exercise 3: Exercise

Attempt the practice questions on Chapter 6: Physical and Chemical Changes, Exercise 3: Exercise with hints and solutions to strengthen your understanding. LEARNING SCIENCE solutions are prepared by Experienced Embibe Experts.

Questions from Dhiren M Doshi Solutions for Chapter: Physical and Chemical Changes, Exercise 3: Exercise with Hints & Solutions

EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q B

What are the essential conditions for rusting of iron objects?

EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q B

Name the constituent metals of stainless steel.
 

EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q A

Dissolving sugar in water is a/an _____.

MEDIUM
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q A

Carbon dioxide turns lime water _____.

EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q A

In galvanisation, iron objects are coated with _____.

EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q C

Only change of _____ takes place during the melting of ice. (state / temperature)

MEDIUM
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q C

We can separate salt from salt solution by _____. (evaporation / sublimation)

MEDIUM
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 6 - Physical and Chemical Changes>Exercise>Q 4

Which ice cube will melt the fastest? Why?