Question # 1

Gases have ____________ shape.

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Fixed

Not Fixed

Nil

Both a & b

Metal can form ions carrying charges:

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Uni-positive

Di-positive

Tri-Positive

All of them

The p subshell has:

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one orbital

two orbitals

three orbitals

four orbitals

Which one of the following metals burns with a brick red flame?

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Sodium

Magnesium

Iron

Calcium

Potassium's atomic no. is :

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17

18

19

20

Which one metal can be cut with a knife?

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Na

Mg

AI

Ca

H° + H° are ________________ in energy.

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Lower

Higher

Medium

Nil

Which one of the following is brittle?

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Sodium

Aluminum

Selenium

Magnesium

Electrolyte is ____________ solid form.

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in

Sometimes in

Never in

Always in

4th & 5th consist of ________________ elements.

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8

18

32

infinite

The modern periodic table is based on:

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Atomic number

Mass number

Relative mass

Nil

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

Bucky molecules have ________________ c-atoms.

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20-60

20-90

40-60

40-100

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