Question # 1

The weight of an object of mass 1 kg on Earth surface is

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1 N

10 N

100 N

1000 N

A piece of iron is kept in open air for 5 days. A film of corrosion formed over it is.

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Iron oxide

Iron sulphide

Iron Chloride

Iron Hydride

Teh weight of 100 g mass is.

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10 N

1 N

100 N

1000 N

Negatively charged atom or grop of atoms is called.

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Proton

Electron

Anion

Cation

The maximum numebr of electrons that N-Shell accomodate are.

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2

8

18

32

Nuclear membrane is not found in.

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Plant cell

Animal cell

Bacterial cell

Fungal cell

Chlorophyll is present in.

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Mesophyll cells

Upper epidermis

Lower epidermis

Endodermis

Chemical bond between N2 Molecule is

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Ionic

Single covalent

Double covalent

Triple vocalent

Sound cannot pass through.

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Solid

Liquid

Vacuum

Gasses

The mass of an atom is almost due to the.

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Electron

Proton

Nucleus

Neutrons

------------- in mouth has antiseptic property and kills microogansms in food.

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Tongue

Teeth

Saliva

Trachea

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