Question # 1

Gold was used for utensils as early as ____________ BC.

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3400

3500

3600

3700

There are _________ types of bonds.

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1

2

3

4

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

_________ shells of noble gases is complete.

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Outer most

2

1

Nil

In diamonds, carbon are ____________ bonded.

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Tetrahedrally

Single

Double

None

Electron ________________ energy when they jump from low to higher level.

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Absorb

Radiate

Nothing

Nil

The cathode of Nelson's cell is made up of

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C

Zn

Cu

Fe

In metal hydrides, the oxidation number of hydrogen is

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+1

-1

+2

-2

In ionic bond complete ________________ of electrons occurs.

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Paring

Sharing

Transfer

None

Solids are fixed ____________

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Shape

Velocity

Mass

Atoms

Which one is the following belongs no Noble Gases?

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O

F

Ne

Nil

The elements of group 17 are called:

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Carbon family

Noble gases

Alkaline earth metals

Halogen family

First energy level is denoted by:

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K

L

M

N

All are noble metals except:

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Silver

Gold

Hydrogen

Platinum

There are _________ elements found till now .

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120

118

119

117

_____________ revolves in orbits around nucleus.

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Electron

Proton

Neutrons

Nil

Mass no is represented by :

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A

B

C

D

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

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Sodium

Magnesium

Iron

Calcium

____________ Metals are electronegative in nature.

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Pure-

Noble-

Non-

Nil

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