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BIOLOGY

Biology
Pellagra is caused due to the deficiency of

Niacin
Thiamine
Pyridoxine
Riboflavin

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Biology
Rickets is caused due to the deficiency of

Cyanocobalamine
Thiamine
Calciferol
Carotene

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Biology
The element found in bone and teeth

Phosphorus and sulpher
Calcium and Magnesium
Calcium and phosphorus
Potassium and calcium

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Biology
In Carbohydrates the ratio of hydrogen to oxygen is

None of these
0.086111111111111
0.084027777777778
0.04375

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Biology
The story of vitamins dates back to

18th century
17th century
16th century
15th century

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