In Duma’s method of estimation of nitrogen 0.35 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 300K= 15 mm)
1. | 16.45 | 2. | 17.45 |
3. | 14.45 | 4. | 15.45 |
The Lassaigne’s extract is boiled with conc. while testing for halogens, because it:
1. Helps in the precipitation of
2. Increases the solubility product of
3. Increases the concentration of ions
4. Decomposes and , if formed
The most reactive compound towards electrophilic reagent among the following is:
1. | 2. | ||
3. | 4. |
The most stable conformation of n-butane among the following is:
1. | 2. | ||
3. | 4. |
The IUPAC name of the compound having the formula CH≡C–CH=CH2 is:
1. 3-butene-1-yne
2. 1-butyn-3-ene
3. but-1-yne-3-ene
4. 1-butene-3-yne
Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
1. 2-butene
2. Butanol
3. 2-butyne
4. 2-butenol
The following compounds are given for reference
(1) CH3-CH2–
(2) H2C=CH–
(3) HC≡C–
The increasing order of basic strength is:
1. (2)>(1)>(3)
2. (3) >(2) >(1)
3. (1) >(3) >(2)
4. (1) >(2)>(3)
How many stereoisomers does this molecule have?
1. 4
2. 6
3. 8
4. 2
The stability of carbanions in the following:
is in the order of:
1. (1) > (2) > (3) > (4)
2. (2) > (3) > (4) > (1)
3. (4) > (2) > (3) > (1)
4. (1) > (3) > (2) > (4)
What is the correct sequence of acidity for the following compounds?
1. | CH3COOH > BrCH2COOH > ClCH2COOH > FCH2COOH |
2. | FCH2COOH > CH3COOH > BrCH2COOH > ClCH2COOH |
3. | BrCH2COOH > ClCH2COOH > FCH2COOH > CH3COOH |
4. | FCH2COOH > ClCH2COOH > BrCH2COOH > CH3COOH |