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Chemistry

Chemistry
The iron ore which contains 72% of iron is :

Magnetite
Haematite
Siderite
Limonite

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Chemistry
The value of Avogadro Number is

6.023 × 1022
6.023 × 1024
6.023 × 1023
6.023 × 1025

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Chemistry
If a buffer solution is diluted its pH

Remains same
Will slowly increase and then it will decrease
Is increased
Is decreased

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Chemistry
Aspirin is

Phenyl Salicilate
Acetyl Salicilic acid
Methoxy benzoic acid
Methyl Salicilate

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Chemistry
Galena is a mineral of

Lead
Iron
Gold
Calcium

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Chemistry
The drug ‘Marijuana’ is a

Hallucinating substance
Sedative
Mental stimulant
Tranquillizer

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MORE MCQ ON Chemistry

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