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Chemistry

Chemistry
Silica gel is a

Drying agent
Flavouring agent
Delicious food
Moisturizer

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Chemistry
Which of the following is used in welding broken pieces of iron rails and machine parts?

Solder
None of these
Aluminium powder
Aluminium sulphate

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Chemistry
Which of the following is used in dating archaeological findings ?

614C
92235U
818O
13H

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Chemistry
The chemical name of quartz is

Sodium silicate
Calcium phosphate
Calcium oxide
Sodium phosphate

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Chemistry
The gas used for artificial ripening of green fruit is

ethylene
ethane
acetylene
carbon dioxide

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Chemistry
Nitric acid does not react with

Gold
Iron
Zinc
Copper

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