Question # 1

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

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Cu

AgNO3

Cu(NO3)2

Ag

Which one of the following does not affect the boiling point?

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intermolecular forces

external pressure

nature of liquid

initial temperature of liquid

The number of electrons in K shell of O is ________________

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9

10

2

1

The 2nd and third periods are called

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short period

Normal period

Long period

Very long period

When U-235 breaks up, it produces?

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electrons

neutrons

protons

nothing

Alpha particles are double charged.

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Negative

Positive

Can be both

Nil

The symbol of lead us

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As

Pb

Sb

Na

A heterogeneous mixture of different substance are called:

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Solution

Suspension

Colloids

Nil

Which one of the following is heterogeneous mixture?

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milk

ink

milk of magnesia

sugar solution

The no. of Ion pair/pairs in ammonia molecule is / are

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1

2

3

4

All of the following are tri-atomic molecules except:

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H²

O³

H²O

CO²

All ionic compound are ________________ at room temperature.

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Liquid

Solids

Gas

Plasma

Atoms are arranged in ________________ structure in Bucky balls.

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Hollow

Cage

A & B

Nil

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