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Chemistry

Chemistry
Which one of the following has a maximum tendency to form M3 ion ?

P
As
N
Bi

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Chemistry
Which one of the following is an example of a gel ?

Cheese
Shaving cream
Milk
Face cream

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Chemistry
Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful

SO2 in the air
Solar infrared radiation
CO2 in the air
Solar ultraviolet radiation

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Chemistry
Chemical name of vinegar is

Acetone
Formaldehyde
Ethanol
Acetic acid

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Chemistry
The total energy of revolving electron in an atom

Can have any value above zero
Will always be positive
Cannot be negative
Can never be positive

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Chemistry
The graphite rods in the nuclear reactor

produce neutrons
undergo combustion which triggers the nuclear fission
convert fast moving neutrons into thermal neutrons
react with U to release energy

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