Chemistry Quiz - 3, General Knowledge


25 Questions MCQ Test General Knowledge | Chemistry Quiz - 3, General Knowledge


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Attempt Chemistry Quiz - 3, General Knowledge | 25 questions in 50 minutes | Mock test for Current Affairs preparation | Free important questions MCQ to study General Knowledge for Current Affairs Exam | Download free PDF with solutions
QUESTION: 1

The high reactivity of fluorine is due to

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QUESTION: 2

The main chemical constituent of clay is

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QUESTION: 3

The major constituent of air is

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QUESTION: 4

The iron ore magnetite consists of

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QUESTION: 5

The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

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QUESTION: 6

The mineral containing both magnesium and calcium is

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QUESTION: 7

The metal does not give H2 on treatment with dilute HCL is

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QUESTION: 8

The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

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QUESTION: 9

The most extensive, commercially useful source of thorium as monazite sand occurs in India at

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QUESTION: 10

The main active constituent of tea and coffee is

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QUESTION: 11

The maximum number of isomers for an alkene with molecular formula C4H8 is

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QUESTION: 12

The hardest form of carbon is

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QUESTION: 13

The number of electrons presents in H+ is

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H+ is a hydrogen ion, and it is an ion because it LOST an electron. Electrons are negatively charged. When an atom gains electrons it will have NEGATIVE charges.

So it has zero electron.

QUESTION: 14

The most important ore of aluminium is

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QUESTION: 15

The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of

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QUESTION: 16

The hottest part of the gas flame is known as

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QUESTION: 17

The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

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QUESTION: 18

The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

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QUESTION: 19

The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

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QUESTION: 20

The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in

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The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in 12 moles of KMnO4.

QUESTION: 21

The National Chemical Laboratory is situated in

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QUESTION: 22

Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

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QUESTION: 23

The mass number of an atom is equal to

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QUESTION: 24

The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

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QUESTION: 25

The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

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