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Chemistry

Chemistry
A matured mammalian cell without nucleus is

Erythrocyte
Spermatozoan
Lymphocyte
Oocyte

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Chemistry
The element used for making solar cells is

Sodium
Calcium
Silicon
Magnesium

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Chemistry
Glycol is added to aviation gasoline because it

Prevents freezing of petrol
Reduces evaporation of petrol
Reduces consumption of petrol
Increases efficiency of petrol

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Chemistry
Silver nitrate solution is kept in brown bottles in laboratory because

Brown bottles react with it
It reacts with ordinary white bottles
Brown bottles stops the passage of light through it
Brown bottles do not react with it

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Chemistry
Which of the following chemicals is used in photography ?

Silver bromide
Sodium chloride
Potassium nitrate
Aluminium hydroxide

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Chemistry
Citric acid is present in free form in

Lemon
Milk
Tamarind
Apple

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