Metallic sodium is fused with organic compounds for testing nitrogen, sulphur, and halogens. The correct reason behind this is:

1. To convert all compounds to their ionic form.
2. Sodium reduces the compounds.
3. Sodium converts all compounds in their covalent form.
4. None of the above.

Subtopic:  Quantitative Analysis of Organic Compounds |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A mixture of calcium sulphate and camphor can be separated by- 
1. Filtration
2. Evaporation
3. Sublimation
4. Chromatography

Subtopic:  Qualitative Analysis of Organic Compounds |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A gas among the following that can be absorbed by potassium hydroxide is -

1. Carbon dioxide 2. Silicon dioxide
3. Hydrogen 4. Carbon monoxide 
Subtopic:  Qualitative Analysis of Organic Compounds |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

0.3780 grams of an organic chloro compound gave 0.5740 grams of silver chloride in Carius
estimation. % of chlorine present in the compound is -

1. 25%

2. 37.59%

3. 42%

4. 05.70 %

Subtopic:  Quantitative Analysis of Organic Compounds |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In the Carius method, 0.468 grams of an organic sulphur compound gives 0.668 grams of barium sulphate.  The percentage of sulphur in the given compound is -

1. 19.59%

2. 25.40%

3. 09.24%

4. 27.59%

Subtopic:  Quantitative Analysis of Organic Compounds |
 65%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The most stable carbocation among the following is-
1. \(({CH_3})_3C\overset{+}{C}H_2\)
2. \(({CH_3})_3\overset{+}{C}\)
3. \({CH_3}CH_2\overset{+}{C}H_2\)
4. \(({CH_3})\overset{+}{C}HCH_2CH_3\)

Subtopic:  Electron Displacement Effects |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

O2NCH2CH2O- is more stable than CH3CH2O- because :

1. NOshows +I effect
2. NO2 shows -I effect
3. NO2 decreases the positive charge on the compound
4. Ethyl group increases positive charge on the compound

Subtopic:  Electron Displacement Effects |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Alkyl groups act as electron donors when attached to a π system due to-
1. Inductive effect
2. Mesomeric effect
3. Resonance
4. Hyperconjugation

Subtopic:  Electron Displacement Effects |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

An electrophile among the following is -

1. \(\mathrm{OH}^-\) 2. \(\mathrm{NC}^-\)
3. \(R_3C^-\) 4. Carbonyl group
Subtopic:  Nucleophile & Electrophile |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Elimination reaction among the following is-
 

1. CH 3 CH 2 Br   +   HS -   →           CH 3 CH 2 SH   +   Br - 2. ( CH 3 ) 2 C = CH 2   +   HCl →           ( CH 3 ) 2   ClC - CH 3
3. CH 3 CH 2 Br +   HO - →           CH 2 = CH 2   +   Br - + H 2 O 4. ( CH 3 ) 3 C - CH 2 OH   +   HBr   →           ( CH 3 ) 2 CBrCH 2   CH 3   +   H 2 O

Subtopic:  Types of Reaction |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh