Exercise : Solutions of Questions on Page Number : 252 Q1 : What are the different ways in which water gets contaminated? Answer : Water gets contaminated by the addition …
Exercise : Solutions of Questions on Page Number : 234 Q1 : Which of the following is NOT a member of the solar system? (a) An asteroid (b) A satellite …
Exercise : Solutions of Questions on Page Number : 212 Q1 : Suppose you are in a dark room. Can you see objects in the room? Can you see objects …
Exercise : Solutions of Questions on Page Number : 197 Q1 : Which of the following cannot be charged easily by friction? (a) A plastic scale (b) A copper rod …
Exercise : Solutions of Questions on Page Number : 180 Q1 :Fill in the blanks. (a) Most liquids that conduct electricity are solutions of ________, _______ and ________. (b) The …
Exercise : Solutions of Questions on Page Number : 168 Q1 :Choose the correct answer. Sound can travel through (a) gases only (b) solids only (c) liquids only (d) solids, …
Exercise : Solutions of Questions on Page Number : 155 Q1 : Fill in the blanks. (a) Friction opposes the ________between the surfaces in contact with each other. (b) Friction …
Exercise : Solutions of Questions on Page Number : 142 Q1 : Give two examples each of situations in which you push or pull to change the state of motion …
Exercise : Solutions of Questions on Page Number : 124 Q1 : What is the term used for secretions of endocrine glands responsible for changes taking place in the body? …
Exercise : Solutions of Questions on Page Number : 110 Q1 : Explain the importance of reproduction in organisms. Answer : Reproduction is a biological process through which living organisms …