Question # 1

Outermost shell of sodium atom has ...... electrons.

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1

2

3

4

Brine water is mixture of

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Salt and sugar

Salt and acetic acid

Salt and water

Salt and alcohol

Entry and growth of pathogen into our body is called.

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Pathogen

Infection

Immunity

None of these

When a body tissue is damaged or injured, it causes.

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Inflammation

Infection

Pathogen

Immunity

Area around nucleus where electrons are found are called.

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Orbit

Shell

Both a and b

None of these

The temperature of melting ice in Fahrenheit scale is.

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0 oF

32 oF

100 oF

212 oF

An empty steel container is sealed and heated, which of the following properties of the gas is likely to increase.

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Mass

Pressure

Volume

Density

Atomic number of element presetnin period 2 and group 15 of the periodic table.

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4

5

6

7

Select all that happen during a chemicla change.

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A temporary chagne occurs.

Composition of the substanes is changed.

Propertis of the sbstances are changed.

New substances with different properties are formed.

The loss of water from aerial parts of the plants.

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Respiration

Photosynthesis

Evaporation

Transpiraton

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