Question # 1

Solids are fixed ____________

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Shape

Velocity

Mass

Atoms

.................... of an atom is not fixed.

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Size

Mass

Electronegativity

Nuclear char

Br2 + H2S __ 2HBr + S, which one is oxidizing agent:

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H2S

Br2

S

2HBr

Water dissolves ____________ compound.

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Ionic

Polar covalent

A & B

Nil

Oxidation means

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Gain of oxygen

Removal of oxygen

Gain of hydrogen

Gain of electrons

First energy level is denoted by:

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K

L

M

N

Metal can form ions carrying charges:

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Uni-positive

Di-positive

Tri-Positive

All of them

____________ agents gains electrons in chemical reaction.

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Reduction

Oxidation

Both

None of these

Free radical is a

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Extremely stable

Extremely reactive

Extremely inert

All of these

The symbol of sodium is :

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Sa

Na

Pa

Ca

Gases have ____________ shape.

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Fixed

Not Fixed

Nil

Both a & b

Which of following does not belong to p-block?

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IIIA

IVA

VA

VIB

Cu + 2AgNO3 -------> Cu(NO3) +2Ag. In this reaction reducing agent is:

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Cu

AgNO3

Cu(NO3)2

Ag

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