Question # 1

The nucleus of an atom is composed of

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Electrons

Electons and protons

Protons and neutrons

Electrons and neutrons

How many electons can be accommodated in S subshell?

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2

6

14

10

Number of neurtons in ²⁷M₁₃are

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13

14

27

15

How is radio carbon dating useful for archeolgists.

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It helps detemine whether the matter is radioactie or not

It helps determine the age of organic matter

It helps determine the composition of matter

It helps deterime the usefulness of matter

d- subshell can accommodate maximum electrons.

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2

6

10

14

A sub sheel that cna accommodate 6 electrons is

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b

s

f

p

Whcih Isotopes is used for diagonosis of goiter?

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Iodine-131

Cobalt -60

P-32

Sr-90

Which Isotopes is commonly used to irradiate cancer cells.

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Cobalt -60

Iodine-23

Carbon -14

Iodine-131

John Dalton put forward his atomic theory.

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1800

1803

1805

1903

Carbon -14 is used for the

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Growth of bones

Diagonosis of goiter

Age determination of old objects

All of these

¹³ C and ¹⁴ C are both present in nature.

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0,1 %

1.1 %

0.9 %

1.5 %

Who performed fist experiment to split atom

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Bohr

Newton

Rutherford

Soddy

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