Pollution of Air and Water

Pollution of Air and Water Question 1. What are the different ways in which water gets contaminated? Answer: Following are the ways by ...

Light

Light

Stars and The Solar System

Stars and The Solar System Choose the correct answer in Questions 1-3. Question 1. Which of the following is NOT a member of the solar s...

Chemical Effects of Electric Current

Chemical Effects of Electric Current

Some Natural Phenomena

Some Natural Phenomena Select the correct option in Questions 1 and 2. Question 1. Which of the following cannot be changed easily by fr...

Friction

Friction

Sound

Sound Question 1. Choose the correct answer. Sound can travel through (a) gases only (b) solids only (c) liquids only (d) solids, li...

Force and Pressure

Force and Pressure

Reproduction in Animals

Reproduction in Animals

Reaching the Age of Adolescence

Reaching the Age of Adolescence Question 1. What is the term used for secretions of endocrine glands responsible for changes taking place...

Cell Structure and Functions

Cell Structure and Functions

Conservation of Plants and Animals

Conservation of Plants and Animals

Coal and Petroleum

Coal and Petroleum

Combustion and Flame

Combustion and Flame

Materials: Metals and Non-Metals

Materials: Metals and Non-Metals

Synthetic Fibres and Plastics

Synthetic Fibres and Plastics

Microorganisms: Friend and Foe

Microorganisms: Friend and Foe

Crop Production and Management

Crop Production and Management