1) Which of these is a fundamental SI unit? a) Joule b) Watt c) Second d) Calorie 2) Third Law of motion tells about a) Momentum b) Force c) Interia d) Action and Reaction 3) If a person weighs 60KgW at earth, what will it weighs on moon? a) 10 b) 20 c) 30 d) 40 4) Which of these is positively charged? a) Electron b) Proton c) Nutron d) Photon 5) What is the unit of velocity? a) Kg-m/s b) m/s c) m/s^2 d) Kg-m/s^2 6) Which of these is a vector quantity? a) Speed b) Time c) Current d) Displacement 7) What is the valency of Carbon? a) 1 b) 2 c) 3 d) 4 8) Which of these is good conductor? a) Wood b) Plastic c) Iron d) Silk

Class 9 Science Practice

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