Question # 1

The unit of ionization energy is

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nm and pm

kJ mol-1

Pascal

Newton

How many elements are present in 6th period.

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2

8

18

32

Metal have the tendency to lose elecrons due to.

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High ionization energies

Low ionization energies

Low electron affinity

None of the above

Elements of Group1 are called.

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Alkali Metlas

Alkali earth metals

Transition metals

Halogen

Emperical Formula of Glucose is

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CH2O

CHO

CHO2

C2HO

Number of electronsin nitrogen molecule is.

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2

4

6

8

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

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1

2

3

4

A bond formed by the mutual sharing an electron pair is called.

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Ionic bond

Metallic bond

Covalent bond

Coordinate covalent bond

Whcih acid is present in our stomach.

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Nitirc Acid

Hydrochloric acid

Sulphuric acid

All of the above

Whcih term is the same for one mole of oxgen and one mole of water.

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atoms

mass

Molecules

Volume

What information was obtained fom discharge tube expriments?

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Electrons and protons were discovered

Structur eof atom was discovered

Neutrons and protons were discovered

Presence of nucleus in an atom was discovered

Which Isotopes is commonly used to irradiate cancer cells.

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Cobalt -60

Iodine-23

Carbon -14

Iodine-131

Allotropes of oxygen are

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2

3

4

5

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