Sonali Dubey, Atul Sharma and, Sanjay Asthana Solutions for Chapter: Changes Around Us, Exercise 1: EXERCISES

Author:Sonali Dubey, Atul Sharma & Sanjay Asthana

Sonali Dubey Science Solutions for Exercise - Sonali Dubey, Atul Sharma and, Sanjay Asthana Solutions for Chapter: Changes Around Us, Exercise 1: EXERCISES

Attempt the free practice questions on Chapter 9: Changes Around Us, Exercise 1: EXERCISES with hints and solutions to strengthen your understanding. SCIENCE ROUTE 7 solutions are prepared by Experienced Embibe Experts.

Questions from Sonali Dubey, Atul Sharma and, Sanjay Asthana Solutions for Chapter: Changes Around Us, Exercise 1: EXERCISES with Hints & Solutions

EASY
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q V

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.

MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q V

How can you prove that melting of ice is a physical change? Explain an experiment.

MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q V

Describe two methods of preventing rust. 

MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q V

Describe how would you obtain crystals of copper sulphate.

EASY
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q VI

Why is rusting of iron faster in coastal areas than desert? 

MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q VI

How painting on an iron gate prevents it from rusting ? 

EASY
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q VI

Is evaporation of water is a physical change?

MEDIUM
7th CBSE
IMPORTANT
SCIENCE ROUTE 7>Chapter 9 - Changes Around Us>EXERCISES>Q VI

Explain why should we not play with fireworks.