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Chemistry

Chemistry
Which of the following is not a noble gas ?

Helium
Argon
Neon
Hydrogen

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Chemistry
Number of6.023 × 1020 atoms present in one mole of a gas at STP is

6.023 × 1020
'6.023 × 10–23
'6.023 × 10–20
6.023 × 1023

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Chemistry
Which of the following statements are correct about chloroform? a. Liquid fuel b. Anaesthetic in nature c. Produces phosgene d. Fire extinguisher

A, c
B, c
A, b
D, a

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Chemistry
Which of the following metals has least melting point ?

Silver
Copper
Mercury
Gold

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Chemistry
The manufacture of iron from iron ore involves the process of

Electrolysis
Oxidation
Fractional distillation
Reduction

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Chemistry
Which of the following is used to iodise common salt ?

Sodium iodide
Potassium iodate
Iodine
Potassium iodide

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MORE MCQ ON Chemistry

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