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Chemistry

Chemistry
How many neutrons does iron have

30
26
13
8

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Chemistry
Which one of the following organic compounds has fruity smell?

Aldehyde
Ester
Alcohol
Ether

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Chemistry
Ultraviolet rays can be used in water treatment as

Precipitator
Disinfectant
Flocculator
Hydrolyser

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Chemistry
L.P.G. is mostly liquefied

Oxygen
Methane
Butane
Hydrogen

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Chemistry
In the periodic table of elements, on moving from left to right across a period, the atomic radius

Does not follow a definite pattern
Increases
Decreases
Remains unchanged

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Chemistry
A fertile soil is likely to have a pH of

14
9
3
43989

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