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1
IIT-JEE 2006
MCQ (Single Correct Answer)
+3
-1

$$ \mathrm{B}(\mathrm{OH})_3+\mathrm{NaOH} \quad \mathrm{NaBO}_2+\mathrm{Na}\left[\mathrm{~B}(\mathrm{OH})_4\right] $$$+\mathrm{H}_2 \mathrm{O}$

How can this reaction be made to proceed in forward direction?

A

addition of cis -1,2-diol

B

addition of borax

C

addition of trans $-1,2-$ diol

D

addition of $\mathrm{Na}_2 \mathrm{HPO}_4$

2
IIT-JEE 2006
MCQ (Single Correct Answer)
+3
-1

A solution when diluted with $\mathrm{H}_2 \mathrm{O}$ and boiled, it gives a white precipitate. On addition of excess $\mathrm{NH}_4 \mathrm{Cl} / \mathrm{NH}_4 \mathrm{OH}$, the volume of precipitate decreases leaving behind a white gelatinous precipitate. Identify the precipitate which dissolves in $\mathrm{NH}_4 \mathrm{OH} / \mathrm{NH}_4 \mathrm{Cl}$.

A

$\mathrm{Zn}(\mathrm{OH})_2$

B

$\mathrm{Al}(\mathrm{OH})_3$

C

$\mathrm{Mg}(\mathrm{OH})_2$

D

$\mathrm{Ca}(\mathrm{OH})_2$

3
IIT-JEE 2006
MCQ (Single Correct Answer)
+3
-1

When benzene sulphonic acid and $p$-nitrophenol are treated with $\mathrm{NaHCO}_3$, the gases released respectively are

A

$\mathrm{SO}_2, \mathrm{NO}_2$

B

$\mathrm{SO}_2, \mathrm{NO}$

C

$\mathrm{SO}_2, \mathrm{CO}_2$

D

$\mathrm{CO}_2, \mathrm{CO}_2$

4
IIT-JEE 2006
MCQ (Single Correct Answer)
+3
-1

A monatomic ideal gas undergoes a process in which the ratio of P to V at any instant is constant and equals to 1 . What is the molar heat capacity of the gas?

A

$\frac{4 R}{2}$

B

$\frac{3 R}{2}$

C

$\frac{5 R}{2}$

D

0

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