Question # 1

--------------- are fundamental particles of an atom.

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Electron

Proton

Neutron

All of these

Silver+ hydrogen suolphide+Oxygen--------------- Silver sulphide + water The above reaction is known as.

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Combustion

Rusting

Tarmishing

Dehydration

The ... prevents food from entering the trachea.

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Glottis

Epiglottis

Bronchi

Alveoli

Which of the following is insoluble in water.

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Sodium chloride

Oil

Table salt

Baking Powder

-------------- can help certalin bacteria to attach with host cell.

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Flagella

Arm

Pili

DNA

What is transferred by teh movement of waves.

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matter

energy

both a and b

None of these

Sound is a form of.

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Energy

Wave

Frequency

intensity

The tides are highest during.

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Day tides

Night tides

Spring tides

Tides due to Moon only

In which type of irrigation water is distribute through netweork of pipes.

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Drip irrigation

Sprinkle irrigation

Karez

Tube well

Which blood cells protect our body from pathogens.

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Platelets

RCBs

WBCs

None of these

Letter K is used to express theshell around the nucleus of an atom.

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1st

2nd

3rd

4th

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