Question # 1

It is a strong electrolyte

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H2O

CH3COOH

NaOH

C6H6

Which one of the following non-metal is lustrous?

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Sulphur

Phosphorus

Iodine

Carbon

PCL5 is ________________ shaped.

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Bipyromidal

Angular

Triangular

Linear

A heterogeneous mixture of different substance are called:

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Solution

Suspension

Colloids

Nil

Which pair of compounds is soluble?

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Ether and water

KCI and water

Benzene and water

Petrol and water

Which radioisotope is used for the diagnosis of tumor in the body?

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cobalt-60

iodine-131

strontium-90

phosphorus-30

The atomic number is represented by ____________

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A

Y

X

Z

The study of hydrocarbons and their derived compounds is called

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Physical chemistry

Inorganic chemistry

Organic chemistry

Biochemistry

Electrons carry _________ charge.

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+

_

Neutral

Bouble Positive

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

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Positive

Negative

Neutral

Charged

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

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Sodium

Magnesium

Iron

Calcium

Modern periodic table can be classified into ________________.

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Elements

s, p, d, f blocks

Periods

ROWS

The absolute zero means:

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273.15 °C

-273.15 °C

0 °C

-373.15 °C

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