Consider the following molecule.

(a) H₃C-H, H₃C-Br

(b) H₃C-NH₂, H₃C-OH

(c) H₃C-OH, H₃C-SH

The bond which is more polar in the given pairs of molecules is:

1.	C-H bond is more polar than C-Br bond; C-O is more polar than C-N and C-S bond.
2.	C-Br bond is more polar than C-H bond; C-O is more polar than C-N and C-S bond.
3.	C-Br bond is more polar than C-H bond; C-N is more polar than C-O and C-O bond is more polar than C-S.
4.	None of the above.

Consider the following compound:
 
Carbon with minimum impact of negative inductive effect of Br is -

1. C₁
2. C₂
3. C₃
4. All have same inductive effect

The correct resonance structures of CH₃COO^- among the following are:
 

1.
2.
3.
4.

Consider the possible resonating structures of CH₂=CH–CHO is as follows:


The correct sequence of stability is-

1. II > I > III
2. III > I > II
3. I > III > II
4. I > II > III

Consider the resonance structure of CH₃COOCH₃  as follows:



The correct statement among the following is:

The correct order of stability of following carbocation is-

On complete combustion, 0.246 g of an organic compound gave 0.198g of carbon dioxide
and 0.1014g of water. What is the calculated percentage composition of carbon and
hydrogen in the compound?

1. 21.95 %; 4.58 %
2. 33.46 %; 3.14 %
3. 42.15 %; 2.61 %
4. 25.24 %; 3.98 %

What is the percentage composition of nitrogen in the compound if in dumas’ method for estimation of nitrogen, 0.3 g of an organic compound gave 50 mL of nitrogen collected at 300 K temperature and 715 mm pressure?

[Given: Aqueous tension at 300 K=15 mm]

1. 21.43%

2. 25.13%

3. 19.46%

4. 17.46%

During estimation of nitrogen present in an organic compound, the ammonia evolved from 0.5 g of the compound in Kjeldahl’s estimation of nitrogen, neutralized 10 mL of 1 M H₂SO₄. The percentage of nitrogen in the compound is-

1. 46.0 %

2. 51.0%

3. 56.0%

4. 49.0%

What is the calculated bromine percentage in the Carius method for 0.15 g of an organic compound
producing 0.12 g of AgBr?
 

1. 39.05 %

2. 42.42 %

3. 34.04%

4. 65.12 %