Class X Science MCQ Quiz
Challenge your understanding of key Class 10 Science concepts from Physics, Chemistry, and Biology with medium-difficulty multiple-choice questions.
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Quiz Questions & Answers
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Question 1: What is the primary principle behind the formation of a rainbow? (Definition angle)
Refraction and dispersion of light
Diffraction of light
Absorption of specific wavelengths
Reflection of light only
Question 2: In an electric circuit, if the resistance increases while voltage remains constant, what happens to the current? (Application angle)
Current remains the same
Current increases
Current becomes zero
Current decreases
Question 3: Why do acids turn blue litmus paper red? (Consequence angle)
They donate H+ ions
They absorb water
They are basic in nature
They conduct electricity poorly
Question 4: In a scenario where a plant is kept in the dark for 48 hours, what process will it be unable to perform effectively? (Scenario evaluation angle)
Photosynthesis
Respiration
Digestion
Transpiration
Question 5: Is it a myth that all metals are good conductors of heat? Explain briefly. (Myth busting angle)
No, metals insulate heat
Yes, it's a myth; all metals conduct equally
Yes, it's a myth; conductivity varies among metals
No, all metals are excellent conductors
Question 6: What is the consequence of a mutation in DNA during cell division? (Consequence angle)
No effect on the organism
Potential change in traits or diseases
Always beneficial evolution
Immediate cell death
Question 7: In applying the concept of renewable energy, which source is most sustainable for long-term power generation? (Application angle)
Coal
Solar energy
Natural gas
Nuclear fission
Question 8: What defines a homologous series in organic chemistry? (Definition angle)
Compounds with the same functional group and successive members differing by -CH2-
Randomly structured hydrocarbons
Compounds with identical functional groups but varying chains
Only aromatic compounds