Why do warm-blooded animals keep their blood warm?
A. To keep breathing
B. For Food
C. For Digestion
D. For Growth
Formula of sugar is?
A. C12H20O10
B. C12H22O11
C. C10H22O10
D. Any of the above
Soya sause is produced with the help of fungus?
A. Trichophyton bullosum
B. Trichophyton
C. Helminthosporium
D. Apergilus
Which instrument measures purity of milk?
A. Lactometer
B. Barometer
C. Altimeter
D. None of these
Which layer of atmosphere contain the ozone layer?
A. Low stratosphere
B. High stratosphere
C. Troposphere
D. Mesosphere
The unit of frequency is:
A. Meter
B. Meter per second
C. Hertz
D. None of these