Question # 1

Which one of the following is liquid in solid solution?

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sugar in water

butter

opal

fog

The elements of group 17 are called:

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Carbon family

Noble gases

Alkaline earth metals

Halogen family

The unit of Molarity is :

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Molar

Volume

Both

Nil

Metals lose their electrons easily because:

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They are electronegative

They have electron affinity

They are electropositive

Good conductors of heat

Neutrons have _________ charge.

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+

_

No

Nil

The number of proton in an atom is called _________ number.

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Molecule

Formula

Atomic

Molar

Water dissolves ____________ compound.

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Ionic

Polar covalent

A & B

Nil

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

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CH⁴

KBr

CO²

H₂O

____________ do not conduct electricity.

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Electrolyte

Non-electrolyte

Both

Nil

There are _________ types of bonds.

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1

2

3

4

____________ used to remove nail polish.

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Acetyline

Acetone

H2O

Nil

How many numbers of moles are equivalent to 8 grams of CO₂?

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0.15

0.18

0.21

0.24

One amu (atomic mass unit) is equivalent to:

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1.66x10^-24 mg

1.66x 10^-24g

1.66x10 g

1.66x10^-23mg

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