On complete combustion, 0.246 g of an organic compound gave 0.198g of carbon dioxide and 0.1014g of water.
The percentage composition of carbon and hydrogen in the compound are respectively-
1. 21.95 %; 4.58 %
2. 33.46 %; 3.14 %
3. 42.15 %; 2.61 %
4. 25.24 %; 3.98 %
In Dumas’ method for estimation of nitrogen, 0.3g of an organic compound gave 50mL of nitrogen collected at 300K temperature and 715mm pressure. The percentage composition of nitrogen in the compound is-
(Aqueous tension at 300K=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%
In Carius method of estimation of halogen, 0.15 g of an organic compound gave 0.12 g of AgBr.
The percentage of bromine in the compound is-
1. 39.05 %
2. 42.42 %
3. 34.04%
4. 65.12 %