Density of water is maximum at ........... degree Celsius.
Diamond is chemically:
Cooking gas is a mixture of:
Natural rubber is a polymer of:
The substance most commonly used as a food preservative is:
Plants respire through:
LSD stands for:
The disease not transmitted by house-fly is:
The vast proportion of our body’s weight is made up of:
Milk tastes sour when kept in the open for sometime due to the formation of:
The widely used antibiotic, penicillin, is produced by:
The colour of cow’s milk is slightly yellowish due to the presence of:
Soil nature is drastically altered by the application of:
Plant mushroom gets its food from:
Which compound is added to petrol to prevent engines from ‘knocking’ ?