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Chemistry

Chemistry
Which one of the following does not contain Silver ?

Horn Silver
Ruby Silver
German Silver
Lunar Caustic

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Chemistry
The unit of ionic product of water (Kw) is :

Mol-1 let-2
Mol2 let-1
Mol-1 let-1
Mol2 let-2

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Chemistry
Detergents are

Sodium salts of fatty acids
Sodium salts of sulphonic acids
None of these
Sodium salt of benzoic acid

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Chemistry
The presence of ozone in the stratosphere is responsible for

Supplying oxygen for people travelling in jets
Checking the penetration of ultra-violet rays to the earth
Higher rate of photosynthesis
Increasing the average global temperature in recent years

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Chemistry
Baking soda is :

Sodium bicarbonate
Sodium carbonate
Potassium carbonate
Sodium hydroxide

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Chemistry
Sea water is saltier than rain water because

Sea animals are salt producing
Rivers wash away salts from earth and pour them into the sea
Sea beds have salt producing mines
The air around the sea is saltish

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