Question # 1

Decibel unit is used to measure-

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Light intensity

Sound intensity

Magnitude of Earthquake

None of above

What was the first element to be produced artificially?

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Plutonium

Neptunium

Franchium

Technetium

A glass chimney stops an oil lamp from smoking because:

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It increases the supply of oxygen to the flame by convection

The heat produced ensures complete

Both to these

Neither of these

The unit of measurement of inductance is

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Tesla

Weber

Henry

Volts

Who invented the internal combustion engine:

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Ford

Otto

Benz

Diamler

Which among the following is a chemical change?

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A wet towel dries in the sun

Lemon juice added to tea causing colour to change

Coffee is brewed brewed by passing steam through ground coffee

Hot air rises over a radiator

Palaeontology is the study of?

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Birds

Bones

Fossils

Primates

The temperature which has the same reading on both Fahrenheit and Celsius scales is

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40°

-40°

-34°

-140°

Which instrument is used for cutting an object into thin parts for microscopic inspection?

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Microphone

Microscope

Microtome

Micrometer

Which of the following gases is he most toxic?

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Carbon dioxide

Carbon monoxide

Sulphur dioxide

Acetic acid

Which of the following crops helps in nitrc flxation?

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Rice

Wheat

Beans

Maize

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