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Chemistry

Chemistry
The gas which is mainly responsible for the green house effect is:

Carbon dioxide
Carbon monoxide
Ozone
Oxygen

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Chemistry
Formic acid is produced by

White ants
Red ants
Cockroaches
Mosquitoes

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Chemistry
Urea is a

Sodium fertilizer
Potassium fertilizer
Phosphatic fertilizer
Nitrogenous fertilizer

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Chemistry
What is the chemical name for ‘Baking Soda’ ?

Sodium nitrite
Sodium bicarbonate
Sodium nitrate
Sodium carbonate

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Chemistry
The most electropositive elements among the following is

K
Na
Ca
Cs

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Chemistry
In arc welding, Argon is used because of its

High flammability
Low reactivity with metal
Ability to lower the melting point of the metal
High calorific value

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