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Chemistry

Chemistry
The gas used in the artificial ripening of fruits is

Acetylene
Ethane
Butane
Methane

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Chemistry
Soap helps in better cleaning of clothes because

It reduces the surface tension of solution
Soap acts like catalyst
It absorbs the dirt
It gives strength to solution

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Chemistry
Which of the following alkali metals has highest specific heat?

Lithium
Rubidium
Caesium
Potassium

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Chemistry
Depletion of ozone layer causes

Blood cancer
Breast cancer
Lung cancer
Skin cancer

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Chemistry
The items amenable to detection by soft x-rays are

contrabands
narcotics
lead in bullets
genuine coins from counterfeit coins

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Chemistry
The liquid waste from kitchens and baths, of residences is known as :

Storm water
Domestic sewage
Sullage
Refuse

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