The main constituents of Dettol are :
1. Chloroxylenol and α-terpineol.
2. Toluene and phenol.
3. Aniline and benzene.
4. None of the above.
The tincture of iodine comprises of -
1. 6−7 % solution of alcohol in iodine-water mixture.
2. 6−7 % solution of iodine in alcohol-water mixture.
3. 2−3 % solution of alcohol in iodine-water mixture.
4. 2−3 % solution of iodine in alcohol-water mixture.
Artificial sweetening agents are:
|1.||Chemicals that sweeten food and do not add calories to our body.|
|2.||Chemicals that sweeten food and add calories to our body.|
|3.||Chemicals that do not sweeten food and do not add calories to our body.|
|4.||Chemicals that do not sweeten food and add calories to our body.|
Alitame should be avoided as an artificial sweetener because -
1. It adds calories.
2. It is required in higher quantities.
3. It gives a peculiar smell.
4. It is difficult to control the sweetness .
Synthetic detergents are better than soaps because:
|1.||Synthetic detergents work both in soft water and hard water.|
|2.||Soaps work both in soft water and hard water.|
|3.||Synthetic detergents work only in hard water.|
|4.||Soaps work only in hard water.|
Choose the correct statement:
|1.||Detergents that can not be degraded by bacteria are called biodegradable detergents.|
|2.||Biodegradable detergents have straight hydrocarbon chains.|
|3.||Detergents that can be degraded by bacteria are called non-biodegradable detergents.|
|4.||Biodegradable detergents have highly branched hydrocarbon chains.|
Soaps do not work in hard water because:
|1.||Calcium and magnesium ions displace sodium or potassium from their salts and form insoluble calcium or magnesium salts of fatty acids.|
|2.||Sodium or potassium ions displace calcium and magnesium from their salts and form insoluble calcium or magnesium salts of fatty acids.|
|3.||Calcium and magnesium ions displace sodium or potassium from their salts and form insoluble sodium or potassium salts of fatty acids.|
|4.||None of the above.|
Detergents are preferred over soap for cleaning clothes because -
1. Detergents form soluble salts.
2. Detergents form insoluble salts.
3. Soaps form soluble salts.
4. Soaps form insoluble salts of potassium.
Drugs can be classified on the basis of :
1. Pharmacological effect.
2. Chemical structure.
3. Molecular targets.
4. All of the above.
The correct statement among the following regarding cationic detergent is/are:
|1.||These are sodium salts of long chain alcohols or alkylbenzenesulphonic acids.|
|2.||Sodium 4-(1-dodecyl) benzenesulphonate (SDS) is an example of an anionic detergent.|
|3.||These are quaternary ammonium salts of acetates, chlorides, or bromides of amine.|
|4.||None of the above.|