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Chemistry

Chemistry
How many neutrons does iron have

26
30
13
8

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Chemistry
Which of the following is used to remove ink and rust stains on cloth?

Kerosene oil
Oxalic acid
Ether
Alcohol

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Chemistry
Which one of the following is most electronegative

Silicon
Lead
Carbon
Tin

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Chemistry
A non-electronic conductor is

None of these
Gas Carbon
Copper Sulphate
Iron

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Chemistry
What do you understand by the term Espuma ?

Salt
Soap
Foam
Calcium

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Sleet
Fog
Mist
Smog

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