Question # 1

Which one is a solution?

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Carbonated drinks

Sugar

Benzene

Vineger

Which of the following can accommodate 18 electrons?

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K

L

M

N

Bucky molecules have ________________ c-atoms.

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20-60

20-90

40-60

40-100

All of the following are tri-atomic molecules except:

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H²

O³

H²O

CO²

O3, Ozone is _________ molecules.

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Homoatomic

Hetroatomic

Monoatomic

Nil

The branch of chemistry which deals with inter conversion of electrical & chemical energy is:

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Biochemistry

Electrochemistry

Organic chemistry

None of these

H8+ _ Cl8- , the charge on H is.

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_

+

Neutral

Nil

Which one of the following is liquid in solid solution?

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sugar in water

butter

opal

fog

Octet rule is:

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description of eight electrons

picture of electronic configuration

covalent bonding

attaining of eight electrons

Silver is a ____________ metal.

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Pure

Noble

None

All

Identify when pair has polar covalent bonds:

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O₂ and Cl₂

H₂O and N₂

H₂O and C₂H₂

H₂O and HCI

The repetition of a property after a certain interval is:

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Periodicity

Properties

Periodicity of properties

None

Which radioisotope is used for the diagnosis of tumor in the body?

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cobalt-60

iodine-131

strontium-90

phosphorus-30

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