Question # 1

The bond between two atoms will be ionic if the difference between their electronegativities is:

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Less than 1.7

Greater than 1.7

Zero

Less than 1.2

Which one is an example of colloids?

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NaCl + Solution

Milk

Fog

Air

Th name of chemist who arranged all the elements in the periodic tale is :

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J.Newlands

Columb

Einstine

None of these

Spontaneous chemical reactions take place in:

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electrolytic cell

Galvanic cell

Nelson' s cell

downs cell

Which one of the following is heterogeneous mixture?

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milk

ink

milk of magnesia

sugar solution

Which one of the following is liquid in solid solution?

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sugar in water

butter

opal

fog

________________ is the shortest period.

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6th

8th

2nd

1st

Which one of the following shell consists of three subshells?

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K- shell

M-Shell

L-shell

M-shell

Intermolecular forces are of three types and are collectively called ____________

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Nelson' forces

Vander Waal's forces

Neurons

Nil

Sodium - potassium alloy is used in nuclear reactor as a:

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catalyst

coolant

reactant

absorber

Protons carry _________ charge.

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+

_

No

Neutral

Electron ________________ energy when they jump from low to higher level.

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Absorb

Radiate

Nothing

Nil

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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