Class 9 Science â TOP 10 Mcqs : āĻļā§ā§°ā§āĻŖā§ ā§¯ āĻŦāĻŋāĻā§āĻāĻžāĻ¨ â āĻļā§ā§°ā§āĻˇ ā§§ā§Ļ MCQs
1. Which of the following is a non-metal ? āĻ¤āĻ˛ā§° āĻā§āĻ¨āĻā§ āĻ āĻ§āĻžāĻ¤ā§ ?
A) Iron B) Copper C) Sulphur D) Aluminium
Ans: C) Sulphur
Explanation: Sulphur is a non-metal; the others are metals. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¸āĻžāĻ˛āĻĢāĻžā§° āĻ
āĻ§āĻžāĻ¤ā§, āĻāĻ¨āĻŦā§ā§° āĻ§āĻžāĻ¤ā§āĨ¤
2. The fundamental unit of life is: āĻā§ā§ąāĻ¨ā§° āĻŽā§āĻ˛āĻŋāĻ āĻāĻāĻ āĻāĻŋ ?
A) Tissue B) Cell C) Organ D) Organ system
Ans: B) Cell
Explanation: Cell is the smallest unit that can perform all life functions. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻā§āĻˇā§āĻ āĻā§ā§ąāĻ¨ā§° āĻā§āĻˇā§āĻĻā§ā§°āĻ¤āĻŽ āĻāĻāĻāĨ¤
3. Which gas do plants absorb from the atmosphere ? āĻāĻ-āĻāĻāĻ¨āĻŋāĻ¯āĻŧā§ āĻŦāĻžāĻ¯āĻŧā§āĻŽāĻŖā§āĻĄāĻ˛ā§° āĻĒā§°āĻž āĻā§āĻ¨ āĻā§āĻ āĻ˛āĻ¯āĻŧ ?
A) Oxygen B) Carbon dioxide C) Nitrogen D) Hydrogen
Ans: B) Carbon dioxide
Explanation: Plants use COâ for photosynthesis. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻāĻĻā§āĻāĻŋāĻĻā§ āĻĢāĻā§āĻ¸āĻŋāĻ¨ā§āĻĨā§āĻāĻŋāĻā§° āĻŦāĻžāĻŦā§ COâ āĻ˛āĻ¯āĻŧāĨ¤
4. The process by which green plants make their own food is called: āĻ¸ā§āĻāĻā§āĻ¯āĻŧāĻž āĻāĻĻā§āĻāĻŋāĻĻā§ āĻ¨āĻŋāĻā§° āĻāĻžāĻĻā§āĻ¯ āĻ¤ā§āĻ¯āĻŧāĻžā§° āĻā§°āĻž āĻĒā§ā§°āĻā§ā§°āĻŋāĻ¯āĻŧāĻžāĻ āĻāĻŋ āĻāĻ¯āĻŧ ?
A) Respiration B) Photosynthesis C) Transpiration D) Digestion
Ans: B) Photosynthesis
Explanation: Plants use sunlight, water, and COâ to make food. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¸ā§ā§°ā§āĻ¯ā§° āĻĒā§āĻšā§°, āĻĒāĻžāĻ¨ā§ āĻā§°ā§ COâ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻā§°āĻŋ āĻāĻžāĻĻā§āĻ¯ āĻ¤ā§āĻ¯āĻŧāĻžā§° āĻā§°ā§āĨ¤
5. Which of the following is a mixture ? āĻ¤āĻ˛ā§° āĻā§āĻ¨āĻā§ āĻŽāĻŋāĻļā§ā§°āĻŖ ?
A) Distilled water B) Salt solution C) Pure gold D) Baking soda
Ans: B) Salt solution
Explanation: It contains salt and water mixed physically. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ˛ā§āĻ¨ āĻā§°ā§ āĻĒāĻžāĻ¨ā§ā§° āĻā§āĻ¤ āĻŽāĻŋāĻļā§ā§°āĻŖāĨ¤
6. What is the boiling point of water ? āĻĒāĻžāĻ¨ā§ā§° āĻāĻ¤āĻ˛āĻžāĻāĻ āĻāĻŋāĻŽāĻžāĻ¨ ?
A) 50°C B) 75°C C) 100°C D) 120°C
Ans: C) 100°C
Explanation: Water boils at 100°C at normal pressure. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¸āĻžāĻ§āĻžā§°āĻŖ āĻāĻžāĻĒāĻ¤ āĻĒāĻžāĻ¨ā§ 100°C āĻ¤ āĻāĻ¤āĻ˛ā§āĨ¤
7. Which organ purifies blood in human body ? āĻŽāĻžāĻ¨ā§ą āĻĻā§āĻšāĻ¤ āĻā§āĻ¨ āĻ āĻā§āĻāĻ ā§°āĻā§āĻ¤ āĻĒā§°āĻŋāĻˇā§āĻāĻžā§° āĻā§°ā§ ?
A) Heart B) Kidney C) Lungs D) Liver
Ans: B) Kidney
Explanation: Kidneys filter waste from blood. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻŦā§āĻā§āĻāĻ ā§°āĻā§āĻ¤ā§° āĻ
āĻĒāĻĻā§ā§°āĻŦā§āĻ¯ āĻāĻžāĻāĻā§āĨ¤
8. Which state of matter has no fixed shape and no fixed volume ? āĻā§āĻ¨ āĻ ā§ąāĻ¸ā§āĻĨāĻžā§° āĻĒāĻĻāĻžā§°ā§āĻĨā§° āĻ¸ā§āĻĨāĻŋā§° āĻāĻāĻžā§° āĻā§°ā§ āĻāĻ¯āĻŧāĻ¤āĻ¨ āĻ¨āĻžāĻĨāĻžāĻā§ ?
A) Solid B) Liquid C) Gas D) Plasma
Ans: C) Gas
Explanation: Gases expand to fill any container. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻā§āĻ āĻ¯āĻŋāĻā§āĻ¨ā§ āĻĒāĻžāĻ¤ā§ā§° āĻĒā§ā§°āĻŖ āĻā§°ā§āĨ¤
9. What is the chemical formula of water ? āĻĒāĻžāĻ¨ā§ā§° ā§°āĻžāĻ¸āĻžāĻ¯āĻŧāĻ¨āĻŋāĻ āĻ¸āĻāĻā§āĻ¤ āĻāĻŋ ?
A) COâ B) HâO C) Oâ D) Hâ
Ans: B) HâO
Explanation: Water contains hydrogen and oxygen. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻĒāĻžāĻ¨ā§āĻ¤ āĻšāĻžāĻāĻĄā§ā§°’āĻā§āĻ¨ āĻā§°ā§ āĻ
āĻā§āĻ¸āĻŋāĻā§āĻ¨ āĻĨāĻžāĻā§āĨ¤
10. Which of the following is a physical change ? āĻ¤āĻ˛ā§° āĻā§āĻ¨āĻā§ āĻā§āĻ¤ āĻĒā§°āĻŋāĻŦā§°ā§āĻ¤āĻ¨ ?
A) Burning paper B) Rusting iron C) Melting ice D) Cooking food
Ans: C) Melting ice
Explanation: No new substance is formed. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¨āĻ¤ā§āĻ¨ āĻĒāĻĻāĻžā§°ā§āĻĨ āĻ¸ā§āĻˇā§āĻāĻŋ āĻ¨āĻšāĻ¯āĻŧāĨ¤
Tips : Learn concepts, not just answers. : āĻā§ā§ąāĻ˛ āĻāĻ¤ā§āĻ¤ā§° āĻ¨āĻšāĻ¯āĻŧ, āĻ§āĻžā§°āĻŖāĻžāĻ āĻŦā§āĻāĻžāĨ¤