Question # 1

Pure alkalis metals can be cut siply by knife but iron cannot bccause of alkali meals have

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Non metalic bonding

Strong metallic bonding

Weak metallic bonding

Moderate metqllic bonding

How many elements are present in 6th period.

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2

8

18

32

The minium amont of energy whcih is required to remvoe an electron from valence shell of the gaseous state of an atom is called.

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Potential energy

Ionization energy

Electron affinity

Electronegativity

Which one of the followign halogns has highest electronegativity

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Iodine

Fluorine

Chlorine

Bromine

The distance between the neclei of two carbon atoms in its elemetnal from is

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150 pm

152 pm

154 pm

156 pm

Which are good conductor of heat and electricity

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Metals

Non metals

Metalloids

All of these

A yellow solid element exists in allotropic forms whic is also present in fossil fuel. Indicate the name

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Iodine

Carbon

Sulphur

Aluminium

Mark the icorrect statement about ionization energy.

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It is measured in kJmol-1

It is absorption of energy

It decreased in a period

It decrese in a group

Elements of Group1 are called.

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Alkali Metlas

Alkali earth metals

Transition metals

Halogen

The horizontal lines present in the priodic table are called.

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Groups

Periods

Both a and b

None of these

When we mvoe from top to bottom in a group atomic size.

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Decrease

Increases

First increases then decreases

None of the above

Elments re classified into four blocks depending upon

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Shell

Atomic mass

Sub -Shell

Atomic Number

All metals bear

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Positive charge

Negative charge

Both a and b

None of these

The element having less value of ionizatin energy and less value of electron affinity is likely to belong to.

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Group1

Group 13

Group 16

Group 17

Which one of the following halongesn has lowest electronetivity

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Iodine

Chlorine

Fluorine

Bromine

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