Question # 1

One atmospheric pressure is equal to how many pascals?

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101325

10325

106075

10523

All metals are solid except

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AI

Mg

Na

Hg

Metal can form ions carrying charges:

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Uni-positive

Di-positive

Tri-Positive

All of them

N consist of ________________ sub shells.

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4

1

2

0

It is heterogeneous mixture

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Sand

Milk

Air

Brass

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

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H2S

Br2

S

2HBr

Atoms as a whole is _________

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+

_

No

Neutral

Graphite is ___________

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Hard

Nil

Soft

Nil

The vertical columns in the periodic table are called:

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perlods

groups

rows

blocks

Which one is an example of colloids?

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NaCl + Solution

Milk

Fog

Air

The symbol of lead us

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As

Pb

Sb

Na

The formula of benzene is _________

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C6H6O3

C6H6

C12H22

Nil

Mark the incorrect statement about ionization energy:

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it is measured in Kjmol^-1

it is absorption of energy

it decreases in period

it decreases in a group

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