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Biology

Biology
How many teeth in man comes out twice

12
28
4
20

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Biology
Which among the following is not a connective tissue?

Cartilage
Skin
Bone
Blood

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Biology
Study of female reproductive system is

Gerontology
Gastroenterology
None of these
Gyneocology

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Biology
Which of the following is nucessary for digestion of food ?

Enzyme
Water
Air
Mineral

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Biology
In N2- fixation process, nitrite is converted to nitrate by

Nitosomonas
Azotobacter
Azospirillum
Nitrobacter

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Biology
Source of infection in diseases like Tuberculosis, Mumps and Whooping cough is

Droplets of saliva
A vector
Direct contact
Carrier organism

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