1 Science for Class 9

Q1: Name two factors which determine the momentum of a body.Ans: The two factors that determine the momentum of a body […]

Q1: Define the term velocity. What is its unit? Is it a scalar or vector quantity?Ans: Velocity is a physical quantity

Q1: What is the function of epidermis in plants?Ans: Epidermal tissue forms a protective layer for plants and helps to protect

Q1: Name the smallest cell and the longest cell in human body.Ans: The smallest cell in the human body is the red blood cell or

Q1: Why did Rutherford select a gold foil in his alpha-ray scattering experiment?Ans: Rutherford selected a gold foil in his alpha-ray

Q1: What is the building block of all matter?Ans: Atom is the building block of all matter. Q2: Give the derivation

Q1: Name the process by which pure copper sulphate can be obtained from its impure sample.Ans: Crystallisation is the process used to

Q1: A rubber band is a solid, but it can change its shape. Why?Ans: A rubber band changes shape under force

Multiple Choice Questions Q1. Which of the following is a Kharif crop?(a) Wheat(b) Mustard(c) Soyabean(d) Gram Correct Answer is   Option (c)Soyabean is a

Multiple Choice Questions Q1. Which of the following is a Kharif crop?(a) Wheat(b) Mustard(c) Soyabean(d) Gram Q2. What is the main objective of crop