S K Jain and Shailesh K Jain Solutions for Chapter: Physical and Chemical Changes, Exercise 3: Oral Questions

Author:S K Jain & Shailesh K Jain

S K Jain Science Solutions for Exercise - S K Jain and Shailesh K Jain Solutions for Chapter: Physical and Chemical Changes, Exercise 3: Oral Questions

Attempt the practice questions on Chapter 6: Physical and Chemical Changes, Exercise 3: Oral Questions with hints and solutions to strengthen your understanding. Science 7 solutions are prepared by Experienced Embibe Experts.

Questions from S K Jain and Shailesh K Jain Solutions for Chapter: Physical and Chemical Changes, Exercise 3: Oral Questions with Hints & Solutions

MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Oral Questions>Q 1

Give the chemical name of the rust.

HARD
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Oral Questions>Q 2

Why is rusting of iron considered a chemical change?

MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Oral Questions>Q 3

Name an alloy of iron that does not rust. (Stainless steel/ Fernico alloy)

MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Oral Questions>Q 4

Name the two metals involved in galvanisation.

HARD
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Oral Questions>Q 5

Name the process by which common salt is obtained from the sea water.