Question Detail

The deficiency of which of the following leads to dental caries ?

Iron
Fluorine
Copper
Zinc

Answer: Option B

1. Monotremes are unique mammals because they

lay eggs
secret milk in a pouch
give birth to live young
posses hair

Answer: Option A

2. Which one of the following is the sweetest natural sugar ?

Lactose
Glucose
Sucrose
Fructose

Answer: Option D

3. Which is responsible for the process of cell division ?

mitosis
heterosis
fusion
fission

Answer: Option A

4. On an average how many litres of blood a human body have ?

2-3 litre
5-6 litre
8-10 litre
12-14 litre

Answer: Option B

5. Study of factors connected with the improvement of human race ?

Evolution
Embryology
Euthenics
Eugenics

Answer: Option D

Explanation:

Evolution - Study of origin of life and formation of new species.

Embryology - Study of fertilization of egg, formation of zygote and development of embryo.

Euthenics - Study of environmental conditions contributing to improvement of human beings.