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Chemistry

Chemistry
An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is

17
53
19
36

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Chemistry
The material known in commerce as Terylene is a

Modified natural fibre
Blend of cotton and silk
Natural fibre
Synthetic fibre

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Chemistry
The gas liberated in the Bhopal gas tragedy was:

Ethylene
Pheynl isocynate
Methyl isocynate
Acetylene

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Chemistry
The chemical name of rat poison is

Zinc oxide
Zinc phosphide
Lead nitrate
Potassium cyanide

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Chemistry
Helium gas is used in gas balloons instead of hydrogen gas because it is

Non-combustible
More abundant than hydrogen
More stable
Lighter than hydrogen

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Chemistry
Which one element has the lowest electronegativity value

Francium
Fluorine
Chlorine
Radium

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MORE MCQ ON Chemistry

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