The compound which shows metamerism is: 

1.	C3H6O	2.	C4H10O
3.	C5H12	4.	C3H8O

The correct structure of 2,6-Dimethyl-dec-4-ene is:

1.		2.
3.		4.

a. HC≡CCH=CHCH₃ contains 10 σ bonds and 3 π bonds.

b. CH₂=C=CHCH₃ contains 7 σ bonds and 2 π bonds.

Correct among the above mentioned statement is -

1. Only statement 'a' is true.

2. Only statement 'b' is true

3. Both statements are true

4. Both statements are false

For the estimation of nitrogen, 1.4 g of an organic compound was digested by the Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10 sulphuric acid. The unreacted acid required 20 mL of M/10 sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is:

1. 10%

2. 3%

3. 5%

4. 6%

In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The percentage of bromine in the compound is-

(at. mass Ag = 108; Br = 80)

1. 24

2. 36

3. 48

4. 60

The IUPAC name of the following compound is -

1.  4,4-Dimethyl-3-hydroxybutanoic acid
2. 2-Methyl-3-hydroxypentan-5-oic acid
3. 4-Methyl-3-hydroxypentanoic acid
4. 3-Hydroxy-4-methylpentanoic acid

Structure 1.
Structure 2.

The Correct IUPAC names of the above structures are-

1. 2, 3–dimethyl butanal & Heptan–4–one

2. 2, 4–dimethyl butanal & Heptan–2–one

3. 2, 3–dimethyl butanal & Heptan–3–one

4. 1, 2 –dimethyl butanal & Heptan–4–one

The correct hybridization states of carbon atoms in C₆H₆ is/are:

1.  sp² 

2. sp

3. sp³

4.  All of the above

The correct hybridization states of carbon atoms in the following compound are - $\stackrel{1}{\mathrm{ \; \; C}}{H}_2=\stackrel{2}{C}H-\stackrel{3}{C}\equiv N$
 

$O$
$\left|\right|$
$\underset{1}{C}{H}_3—\underset{2}{C}—\underset{3}{C}{H}_3$

The correct hybridization  of carbon atoms are-

1. C₁= sp , C₂= sp³ , C₂= sp²

2. C₁= sp² , C₂= sp³ , C₂= sp³

3. C₁= sp³ , C₂= sp² , C₂= sp³

4. C₁= sp³ , C₂= sp³ , C₂= sp³