1. The mass number of a nucleus is _____
sum of the number of protons and neutron present in the nucleus
2. Nuclear reaction involved in atom bomb is _____
fission
3. In the sun the energy source is _____
hydrogen
4. Which one is ‘Green House’ gas?
carbon dioxide, carbon monoxide, methane
5. Molecular motion in gases is _____
random
6. Substance released by an endoctrine gland is _____
hormone
7. Insulin, a protein hormone in a human body is secreted by _____
pancreas
8. Protein hormone is made of _____
amino acid
9. Baking soda is _____
sodium bicarbonate
10. Ringworm, an infection on the skin is a _____
fungal infection
11. A gland near neck which control growth of human body is _____
thyroid
12. Antibiotic used for treatment of tuberculosis is _____
streptomycin
13. Which type of a disease ‘influenza’ or ‘flu’ is _____
viral
14. Hereditary material in all living organism is _____
Dexyribose Nucleic Acid
15. The study relating to lives in outer space is _____
exobiology
16. Stars seen on naked eyes belong to _____
Milky way
17. Highly concentrate source of energy in a human body is _____
fat
18. Cholesterol is mainly composed of _____
lipids
19. Blood sugar in a human body is mainly _____
glucose
20. Function of protein in a human body _____
build connective tissues, transport oxygen in blood, catalyze biological reaction
21. In a human body oxygen is transported in blood by _____
haemoglobin
22. The molecule in a living being which can replicate itself is _____
DNA
23. Protein found abundantly in eggs is _____
keratin
24. An early stage of cancer in a human body may be checked by ___
radiotherapy, chemotherapy, surgery
25. Amoeba moves with the aid of _____
pseudopodia
26. The name ‘nature’s ploughman’ is given to _____
earthworm
27. ‘Ear’ is considered absent among _____
fishes
28. Whales found to live in seas and oceans are _____
mammals
29. Major part of the demands of energy in the present world is met by ___
fossil fuel
30. Atmospheric pollutants are found to remain present mainly in ___
troposphere