Question # 1

Sodium metal has electrons

Choose an answer

10

11

12

14

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

Choose an answer

5

10

15

20

How is radio carbon dating useful for archeolgists.

Choose an answer

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

The new substance formed in a chemcial reaction is.

Choose an answer

Reverse

Reactant

Forward

Product

CaO or lime is used extensive in steel, glass and paper industries. It is produced inan exothermic reversitble reaction by the decompositon of lie . Choose the conditions to produce maximum amount of lime.

Choose an answer

Heating at high temperatur ein an open vessel

Heating at high temperatur ein a closed vessel

Cooling it in a closed vessel

Colling it in an open vessel

What mass of 95% CaCO3 will be requred to neutralize 50 cm 3 of 0.5 M HCl solution.

Choose an answer

9.5 g

1.45 g

1.32 g

1.25 g

Every atom has a natural tendency to accommodate electrons in its valence shell

Choose an answer

2 or 6

2 or 4

2 or 8

2 or 10

Atom is electrically

Choose an answer

Positive particle

Negaitve particle

Neutral particle

None of these

What information was obtained fom discharge tube expriments?

Choose an answer

Electrons and protons were discovered

Structur eof atom was discovered

Neutrons and protons were discovered

Presence of nucleus in an atom was discovered

The nucleus of an atom is composed of

Choose an answer

Electrons

Electons and protons

Protons and neutrons

Electrons and neutrons

Buckyballs also knowns as.

Choose an answer

Fullerenes

Graphite

Both a and b

None of these

In a neutralization reaction between KOH and H3PO4how many molecules of KOH will react with one molecule of H3PO4

Choose an answer

1

2

3

4

The horizontal lines present in the priodic table are called.

Choose an answer

Groups

Periods

Both a and b

None of these

More Classes

Other Links

Chemistry 9th Class English Medium Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer