Question # 1

If the solute-solute forces are strong enough than those of solute- solvent force, The solute:

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dissolves readily

does not dissolve

dissolve slowly

dissolves and precipitates

The solubility of which salt increases in heating?

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Li₂SO₄

Ce₂(SO₄)₃

NaCI

KCI

The atomic radil of the elements in periodic table:

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increase form left to right in period

increase form top to bottom

do not change form left to right in period

decrease form top to bottom in a group

Which one is not a tetraatomic molecular?

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H2O

H2O2

SO3

BCL3

Which of the following compound is not directional in its bonding?

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CH⁴

KBr

CO²

H₂O

Transition elements are:

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all gases

all metals

all non-metals

all metalloids

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

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Positive

Negative

Neutral

Charged

In 9th century scientist accepted by:

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Dalton

Bohars

Rutherford

Nil

The number of electrons in K shell of O is ________________

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9

10

2

1

Which one metal is least reactive?

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K

Fe

Cu

AI

Polyatomic molecules consist of _________ atoms.

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1

More than 1

Less than 1

2

The earth is made up of ____________ % of aluminum.

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6

7

8

9

Effusion is a property of:

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Gases

LIquids

Solids

Plasma

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