Day 111: CBSE Class 10 Science

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

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1. A.
   3, 2, 2, 1
2. B.
   2, 3, 3, 1
3. C.
   2, 3, 1, 3
4. D.
   3, 1, 2, 2

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1. A.
   $\mathrm{C + O_2 \rightarrow CO_2}$
2. B.
   $\mathrm{2\,H_2 + O_2 \rightarrow 2\,H_2O}$
3. C.
   $\mathrm{2\,Mg + O_2 \rightarrow 2\,MgO}$
4. D.
   $\mathrm{Fe_2O_3 + 3\,CO \rightarrow 2\,Fe + 3\,CO_2}$

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