EUREKA PLUS Revised Bringing Science to Life>Unit 2>Chapter 6 - Physical and Chemical Changes>HIGHER ORDER THINKING SKILLS

Dr. J M D'Souza and Dr. Kirti J D'Souza Solutions for Exercise 3: HIGHER ORDER THINKING SKILLS

Author:Dr. J M D'Souza & Dr. Kirti J D'Souza

Dr. J M D'Souza Science Solutions for Exercise - Dr. J M D'Souza and Dr. Kirti J D'Souza Solutions for Exercise 3: HIGHER ORDER THINKING SKILLS

Attempt the free practice questions from Exercise 3: HIGHER ORDER THINKING SKILLS with hints and solutions to strengthen your understanding. EUREKA PLUS Revised Bringing Science to Life solutions are prepared by Experienced Embibe Experts.

Questions from Dr. J M D'Souza and Dr. Kirti J D'Souza Solutions for Exercise 3: HIGHER ORDER THINKING SKILLS with Hints & Solutions

HARD

7th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 6 - Physical and Chemical Changes>HIGHER ORDER THINKING SKILLS

Write the name and number of atoms of the elements that the following compound is made up of.

${HNO}_{3}$ (nitric acid):

An example has been done for you:
${CO}_{2}$ (carbon dioxide): $1$ atom of carbon $+$ $2$ atoms of oxygen.

HARD

7th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 6 - Physical and Chemical Changes>HIGHER ORDER THINKING SKILLS

Write the name and number of atoms of the elements that the following compound is made up of.

${CuSO}_{4}$ (copper sulphate):

An example has been done for you:

{CO}_{2}

(carbon dioxide):

1

atom of carbon

+

2

atoms of oxygen.

HARD

7th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 6 - Physical and Chemical Changes>HIGHER ORDER THINKING SKILLS>Q 1

Why is rusting of iron objects faster in coastal areas?

HARD

7th CBSE

IMPORTANT

EUREKA PLUS Revised Bringing Science to Life>Chapter 6 - Physical and Chemical Changes>HIGHER ORDER THINKING SKILLS>Q 2

Is the formation of curd from milk a chemical change? Why?