MCQ
Combustion is a process that
- ✓releases light and heat
- Babsorbs light and heat
- Cproduces only heat
- Dproduces only light
✓
Answer
Correct option: A.
releases light and heat
A
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In a quiz competition, you are asked a question where you have to choose the statement which is/ are correct?
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Column I
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Column II
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$(A)$
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A non-metal, essential for respiration
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$(i)$
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Graphite
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$(B)$
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A non-metal, the source of energy in Sun
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$(ii)$
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Silicon
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$(C)$
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A non-metal, good conductor of electricity
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$(iii)$
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Oxygen
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$(D)$
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A non-metal, used in semiconductors
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$(iv)$
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Hydrogen
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Force changes the
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