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Chemistry

Chemistry
Hard water and soft water can be distinguished by using

Dilute acid
Detergent
Liquid soap
Ordinary soap

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Chemistry
Number of hydrogen atoms in a Glucose molecule

14
8
12
6

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Chemistry
Silicon is used in

Semiconductors
All of these
Transistors
Solar energy devices

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Chemistry
Which one of the following is most electronegative

Silicon
Tin
Carbon
Lead

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Chemistry
The depletion of ozone layer is due to

Chloro fluoro carbon
Carbon dioxide
Sulphur dioxide
Ethane

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Chemistry
Which one of the following is not a cause for present global warming and climate change ?

Carbondioxide emission
CFC emission
Deforstation
Methane emission

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MORE MCQ ON Chemistry

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