Question # 1

How many subshells are there in M shell?

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2

4

3

5

Carbon -14 is used for the

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Growth of bones

Diagonosis of goiter

Age determination of old objects

All of these

The removal of electron from a neutral atom gives rise to.

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Molecular anion

Anion

Cation

Molecular Cation

Which isotope is used in nuclear reactors.

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U-234

U-235

U-238

All of these

Atomic number is represented by

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P

A

At

Z

The nucleus of an atom is composed of

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Electrons

Electons and protons

Protons and neutrons

Electrons and neutrons

A sub sheel that cna accommodate 6 electrons is

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b

s

f

p

Number of isotopes of hydrogen is

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2

5

4

3

An element has 5 electrons in M shell. Its tomic number is.

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5

10

15

20

How many electons can be accommodated in S subshell?

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2

6

14

10

In which isotope of oxygen there are the equal numbr of protons electons and neutorns.

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O¹⁶

¹⁷O

¹⁸O

None of these

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

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Chemistry 9th Class English Medium Unit 2 Online Test MCQs With Answers

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