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Chemistry

Chemistry
Sweat contains water and ________

Salt
Vinegar
Citric acid
Lactic acid

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Chemistry
The apparatus used to test acidity of aqueous solution is

Acidmeter
PH meter
Hygrometer
Ammeter

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Chemistry
Number of6.023 × 1020 atoms present in one mole of a gas at STP is

6.023 × 1023
6.023 × 1020
'6.023 × 10–23
'6.023 × 10–20

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Chemistry
Sulphur dioxide level in the atmosphere can be reduced by using

Catalytic converters in industry
Low - sulphur fuels
Static electricity to attract it in factory chimneys
More efficient car engines

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Chemistry
Silicon is used in

Solar energy devices
All of these
Semiconductors
Transistors

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Chemistry
Litmus is obtained from

Lichen
An alga
A fungus
A bacterium

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MORE MCQ ON Chemistry

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