A dolphin perceives its environment by the sense of__________?
A dolphin perceives its environment by the sense of__________?
A. Sight
B. Sound
C. Both of these
D. None of these
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Lactometer is a type of Hydrometer which is used to measure the specific gravity of _________?
Lactometer is a type of Hydrometer which is used to measure the specific gravity of _________?
A. Honey
B. Water
C. Milk
D. olive oil
E. None of theseMost important effect of the moon on earth is that it___________?
Most important effect of the moon on earth is that it___________?
A. Causes weather change
B. Causes earthquakes
C. Causes solar and lunar eclipse
D. Effects tides of the oceanOne of the main function of the earth’s ozone layer is to ?
One of the main function of the earth’s ozone layer is to ?A. Prevent global warming
B. Filter out ultraviolet rays
C. Absorb pollution
D. All of the aboveBones Ash contain?
Bones Ash contain?A. calcium sulphate
B. phosphoric sulphate
C. Calcium sulphate
D. None of theseThe size of Covid-19 virus is______?
The size of Covid-19 virus is______?A. 25-30KB
B. 28-30KB
C. 29-30KB
D. None of theseMaximum biological damage is caused by ____________?
Maximum biological damage is caused by ____________?A. Gamma rays
B. Alpha rays
C. Beta rays
D. Microwaves