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Biology

Biology
Accumulation of which one of the following in the leads to cramp?

Lactic acid
Ethanol
Pyruvic acid
Glucose

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Biology
Study of process of ageing

None of these
Geronotology
Genocology
Ontogeny

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Biology
Rh factor is discovered by

Weiner
Landsteiner and Weiner
Leuen hook
Landsteiner

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Biology
Which one among the following is the hardest part of our body ?

Spinal vertebra
Enamel of teeth
Thumb nails
Skull bones of head

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Biology
The outermost layer in a plant cell is

Cell wall
Cell membrane
Plasma membrane
Nuclear membrane

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Biology
The non-biotic pollutant of underground water is

Algae
Bacteria
Arsenic
Viruses

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