Day 180: CBSE Class 10 Science

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Propyne $\mathrm{C_3H_6}$
2. B.
   Propyne $\mathrm{C_3H_4}$
3. C.
   Butyne $\mathrm{C_4H_8}$
4. D.
   Butyne $\mathrm{C_4H_6}$

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1. A.
   Formation of slaked lime
2. B.
   Decomposition of vegetable matter into compost
3. C.
   Dissolution of ammonium chloride in water
4. D.
   Digestion of food in our body

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1. A.
   Black and White photography
2. B.
   Burning of coal
3. C.
   Burning of methane
4. D.
   Digestion of food

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