Question # 1

In the redox reaction between zn and HCI. the oxidizing agent is:

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zn

H⁺

C

H²

The types of solutions on the basis of their physical states are

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3

6

9

12

___________ is a pure substance that can be broken down.

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Matter

Element

Mass

Mixture

Metals lose their electrons easily because:

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They are electronegative

They have electron affinity

They are electropositive

Good conductors of heat

Which one of the following is not amorphous?

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rubber

plastic

glass

glucose

Atoms are arranged in ________________ structure in Bucky balls.

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Hollow

Cage

A & B

Nil

________________ is the shortest period.

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6th

8th

2nd

1st

The maximum no.of electrons that can be accommodated in M shell are

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2

8

18

32

The amount of energy given out when an electron is added to any atom is called:

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lattice energy

ionization energy

electronegative

electron affinity

Sodium - potassium alloy is used in nuclear reactor as a:

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catalyst

coolant

reactant

absorber

"×" & "." Represent:

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Shells

Neutrons

Electrons

Atoms

Transition elements are:

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all gases

all metals

all non-metals

all metalloids

The elements of group 3 to 12 are called

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Normal elements

Transition elements

Radioactive elements

None of these

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