Main constituent in air is ___________?
Main constituent in air is ___________?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Helium
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Tocopherol is the chemical name of which vitamin?
Tocopherol is the chemical name of which vitamin?A. vitamin C
B. vitamin D
C. vitamin A
D. vitamin ESaliva helps in the digestion of?
Saliva helps in the digestion of?A. Starch
B. Proteins
C. Lipids
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What is the percentage of water present in our brain?A. 85%
B. 95%
C. 97%
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When a bullet penetrates into a target, the kinetic energy of a bullet is converted into ?
When a bullet penetrates into a target, the kinetic energy of a bullet is converted into ?A. Potential energy
B. Heat energy
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The unit to measure the quantity of Ozone in atmosphere is ?A. Dobson
B. Cloning
C. Dalton
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Which of the following gases do plants and trees give out during photosynthesis?A. Hydrogen
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C. Oxygen
D. Carbon dioxide