Day 230: CBSE Class 10 Science

1. A.
   $6{\cdot}1$ to $6{\cdot}8$
2. B.
   $6{\cdot}5$ to $7{\cdot}3$
3. C.
   $7{\cdot}0$ to $7{\cdot}8$
4. D.
   $7{\cdot}5$ to $8{\cdot}1$

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1. A.
   $\mathrm{C_4H_9OH \xrightarrow[KMnO_4]{Alkaline} C_3H_7COOH}$
2. B.
   $\mathrm{2C_2H_5OH + 2Na \longrightarrow 2C_2H_5COONa + H_2}$
3. C.
   $\mathrm{CH_3COOC_2H_5 + NaOH \longrightarrow CH_3COONa + C_2H_5OH}$
4. D.
   $\mathrm{CH_3COONa + NaOH \longrightarrow CH_4 + Na_2CO_3}$

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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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