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Chemistry

Chemistry
The number of waves in n x 10th Bohr's orbit are

n3
n-2
n2
n

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Chemistry
Mixture can be

Heterogeneous
Pure substance
Homogeneous
Both A and B

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Chemistry
In which of the following substances all carbon atoms are quaternary in nature ?

Diamond
Graphite
Napthalene
Teflon

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Chemistry
Which of the following type of coal has the lowest proportion of volatile matter ?

Anthracite
Bituminous
Lignite
Peat

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Chemistry
The metal ion present in Vitamin B12 is

Cobalt
Zinc
Nickel
Iron

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Chemistry
Identify the metal which is non toxic in nature.

Cobalt
Chromium
Cadmium
Gold

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MORE MCQ ON Chemistry

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