CBSE Class 7 Science Challenge
Test your knowledge of fundamental science concepts covered in CBSE Class 7, including motion, light, heat, and living systems.
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Quiz Questions & Answers
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Question 1: What happens to the speed of light when it travels from air into water?
Remains the same
Becomes zero
Decreases
Increases
Question 2: Which organelle is known as the 'powerhouse' of the cell?
Golgi body
Nucleus
Mitochondria
Chloroplast
Question 3: In a neutralization reaction, what is formed when an acid reacts with a base?
Only water
Salt and water
Carbon dioxide
Only salt
Question 4: Which mode of heat transfer does NOT require a medium?
Convection
All require medium
Radiation
Conduction
Question 5: What is the main function of stomata in leaves?
Produce chlorophyll
Store food
Gas exchange
Transport minerals
Question 6: Which weather instrument measures atmospheric pressure?
Thermometer
Hygrometer
Anemometer
Barometer
Question 7: What type of motion does a simple pendulum exhibit?
Random
Circular
Periodic
Linear
Question 8: Which part of the human digestive system absorbs most of the nutrients?
Small intestine
Esophagus
Stomach
Large intestine