Which of the following is used as a food preservative?

1. 1. Sodium perborate
   2. Sodium banzoate
   3. Citric acid
   4. None of the above

Light energy is converted into chemical energy by _____.

1. 1. Photosynthesis
   2. Electrolysis
   3. Respiration
   4. Transpiration

The most famous genetic disease that is associated with Queen Victoria and circulated among European royalty was _____.

1. 1. Haemophilia
   2. Colour Blindness
   3. Austrian lip
   4. Down’s Syndrome

Gun powder is _____.

1. 1. Compound
   2. Amalgam
   3. Element
   4. Mixture

Ascorbic acid is the another name of _____.

1. 1. Vitamin C
   2. Vitamin B
   3. Vitamin A
   4. Vitamin D

When common salt is mixed with ice, the freezing point _____.

1. 1. is first lowered and then raised
   2. is raised
   3. remains unaffected
   4. is lowered

Fear of enclosed spaces is known as _____.

1. 1. Hydrophobia
   2. Homophobia
   3. Claustrophobia
   4. Kieptophobia

Brass is an alloy of Copper and _____.

1. 1. Iron
   2. Silver
   3. Zinc
   4. Steel

The main constituent of Sui Gas is _____.

1. 1. Sui
   2. Methane
   3. Both (a) and (b)
   4. None of these

Whooping cough is caused by _____.

1. 1. Fungus
   2. Bacteria
   3. Virus
   4. Protozoa