Clemmensen reduction of a ketone is carried out in the presence of which of the following?

1. Zn-Hg with HCl

2. LiAlH4

3. H2 and pt as catalyst

4. Glycol with KOH

In Duma’s method of estimation of nitrogen, 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be: (Aqueous tension at 300 K = 15 mm)

1. 16.45

2. 17.45

3. 14.45

4. 15.45

Which of the following is not correct?
 

Which one of the following is aromatic?

1. Cyclopentadienyl cation

2. Cyclooctatetraene

3. Cycloheptatriene

4. Cycloheptatrienylcation

The complexes [Co(NH₃ )₆ ] [Cr(CN)₆] and [Cr(NH₃ )₆ ] [Co(CN)₆ ] are the examples of which type of isomerism?

1. Ionization isomerism

2. Coordination isomerism

3. Geometrical isomerism

4. Linkage isomerism

A solution with negative deviation among the following is:

1. ethanol-acetone

2. chlorobenzene-bromobenzene

3. chloroform-acetone

4. benzene-toluene

Which of the following compounds is soluble in benzene but almost insoluble in water?

1. $C_2{H}_{5}0H$

2. $C{H}_{3}C{0}_{2}H$

3. $C{H}_{3}CHO$

4. $C_6{H}_{5}N{0}_2$

The correct order of magnitude of bond angles among the compounds CH₄, NH₃' and H₂O is:

1. $C{H}_4>H_{2}O<N{H}_3$

2. $H_{2}O<N{H}_3<C{H}_4$

3. $N{H}_3<C{H}_4<H_{2}O$

4. $N{H}_3<H_{2}O<C{H}_4$

Which one of the following reactions does not form a gaseous product?

1. $Pb{O}_2+H_2{O}_2\to$

2. $Acidified<mspace\; width="1em"></mspace>KMn{O}_4+H_{2}O\to$

3. $PbS+H_2{O}_2\to$

4. $C{l}_2+H_2{O}_2\to$

Observe the following reaction-
 
The rate of formation of C is . What is the value of ?

1. $2.2\times {10}^{-3}$

2. $1.1\times {10}^{-3}$

3. $4.4\times {10}^{-3}$

4. $5.5\times {10}^{-3}$