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Chemistry

Chemistry
The gas which turns into liquid at the lowest temperature among the following is

Oxygen
Nitrogen
Hydrogen
Helium

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Chemistry
Which of the following will replace hydrogen from acids to form salts ?

Ag
S
P
Na

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Chemistry
Suspension particles have the size between

10–1 – 10–2 cm
10–2 – 10–4 cm
10–8 – 10–10cm
10–5 – 10–7cm

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Chemistry
Aspirin is

Methyl Salicilate
Methoxy benzoic acid
Acetyl Salicilic acid
Phenyl Salicilate

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Chemistry
Which of the following is not a nitrogenous fetiliser?

Superphosphate
Ammonium sulphate
Urea
Ammonium nitrate

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

Decreases
Does not follow a definite pattern
Increases
Remains unchanged

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