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Chemistry

Chemistry
A colloidal system in which a liquid is dispersed in a liquid is called

Emulsion
Sol
Gel
Precipitate

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Chemistry
The number of electrons presents in H+ is

zero
three
one
two

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Chemistry
The polymerisation of which often following is used in manufacturing of polythene in industry ?

Methane
Ethylene
Styrene
Acetylene

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Chemistry
The ionic radii of N3-, O2-, F- and Na+ follows the order

Na+ > O2- > N3- > F-
N3- > O2- > F- > Na+
O2- > F- > Na+ > N3-
N3- > Na+ > O2- > F-

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Chemistry
Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission?

China, India, European Union, USA
China, USA, European Union, India
USA, India, China, European Union
European Union, China, USA, India

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Chemistry
The chemical that is used to ripen mangoes is

Calcium carbide
Calcium carbonate
Calcium chloride
Calcium sulphide

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MORE MCQ ON Chemistry

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