Question # 1

Which of the following is less malleable?

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Sodium

Iron

Gold

Sliver

Which of the following result in discovery of proton?

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cathode rays

canal rays

x-rays

alpha rays

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

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Positive

Negative

Neutral

Charged

All are noble metals except:

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Silver

Gold

Hydrogen

Platinum

The no.of neutrons in deutrium is

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1

2

3

4

The most common example of corrosion is:

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Chemical decay

Rusting of iron

Rusting of aluminum

Rusting of tin

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

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CH⁴

KBr

CO²

H₂O

Which of the following can be separated by physical means?

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Mixture

Element

Compound

Radical

T (K) =

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(T) °C + 273

(T) °C -273

(T) °C + 373

(T) °C -373

Which one is not a tetraatomic molecular?

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H2O

H2O2

SO3

BCL3

The atomic number of potassium is:

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11

15

18

19

________________ in linear in shape.

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CO+

CO2

H2O

NH3

1 torr = ?

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1 mm of Hg

1 atm

760 mm of Hg

1 pascal

Which one of the following is heterogeneous mixture?

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milk

ink

milk of magnesia

sugar solution

Which one of the following is an electron deficient molecule?

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HN₃

BF₃

N₂

O₂

The lowest energy level is

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K

L

M

N

The molecular mass of water is

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16 amu

14 amu

18 amu

20 amu

................. can be decomposed into simpler substanmce.

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Compound

Element

Solution

Mixture

The example of solid solute in gas solvent is

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butter

Sugar in water

Smoke in air

Opals

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