Which of the following is used most commonly as a food preservative?

The method of destroying harmful bacteria by heat is known as

A balance fertilizer for plants is

Which one of the following crops requires a large amount of rainfall but no standing water?

Why are plants grown along river banks?

The soil is red because it contains

Ready source of energy for athletes is

Rabi crops are harvested during

The gestation period of cows is

Which one of the following is a fast growing tree?

Palak leaves are rich in

Which of the following has maximum calorific value?

Marck's disease affects

A crop valued for its oil as well as its protein content is

Starch and sugar together are named as

Which of the following vitamin deficiency diseases is not correctly matched?

In human body carbohydrates are stored in

Which vitamin increases the resistance to infection?

Which one of the following acids is present in vitamin C?

Which of the following is a rich source of iron?

The deficiency of Niacin causes

The nutrients that are essential for synthesis of haemoglobin would include

The deficiency of vitamin A in the diet leads to

Diabetes is caused by the deficiency of