Question # 1

Electron _____________ energy when thy jump from higher to lower level.

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Absorb

Radiate

Nothing

Nil

____________ Metals are electronegative in nature.

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Pure-

Noble-

Non-

Nil

One mole of sodium = ______ .

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24 g

25 g

26 g

23 g

Which one an example of heterogeneous mixture?

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Ice cream

Concrete

Both a & b

NiL

The symbol of lead us

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As

Pb

Sb

Na

105 elements were discovered by the year ________________

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1984

1974

1086

1996

_________ which occupies space and have mass.

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Matter

Atom

Molecule

All of above

It is a triatomic molecule

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Sodium chloride

Water

Chalk

Glucose

The equation of relationship between atomic number (Z) and mass number (A) is

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A = Z + N

A = Z - n

A = Z

A =2Z + n

Sort out a compound from the following

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Air

Salt

Ice-cream

Iron

Atoms are made of sub _________

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Atoms

Molecules

Charge

Atomic particles

Mixture has _________ types.

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3

2

1

No types

All of the following are tri-atomic molecules except:

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H²

O³

H²O

CO²

Na__ Na++ e , what type of ionit is :

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Positive

Negative

Neutral

Charged

The third abundant as found in the earth' crust is:

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Carbon monoxide

Oxygen

Nitrogen

Argon

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9th Class Chemistry Chapter 1 Fundamentals of Chemsitry English Medium KPK Boards Online Mcqs MCQs With Answers

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