In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as_______?

A: Annealing

B: Electroplating

C: Galvanization

D: Vulcanization

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Galvanization

Blood which heart pumps to lungs is_____?

A: lymph fluid

B: deoxygenated blood

C: atria blood

D: oxygenated blood

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deoxygenated blood

Which instrument is used to measure the power of electric circuit ?

A: Viscometer

B:  Wavemeter

C:  Wattmeter

D: None of these

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 Wattmeter

Alzheimer’s disease in human beings is characterized by the degeneration of __

A: Nerve cells

B: Kidney cells

C: Liver cells

D: Spleen cells

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Nerve cells

Sound travels about ______times faster in water than in air.

A: 3

B:  2

C: 4

D: 5

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4

The study of rearing fine and intelligent human beings through genetics is called_____?

A: Biotechnology

B: Eugenics

C: Cloning

D: Geneology

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Eugenics

The distance of mercury from sun is_____?

A: 57.9 million km

B: 56 million km

C: 58.9 million km

D: 59.1 million

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57.9 million km

Approximate age of moon is ____?

A: 4.55 billion years

B: 4.51 billion years

C: 4.53 billion years

D: 4.57 billion years

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4.53 billion years

Which rays are trapped in our galaxy by magnetic waves?

A: Gamma rays

B: Alpha rays

C: Cosmic rays

D: None of these

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Cosmic rays

The Lunar eclipse occurs when:

A: Earth is b/w the sun and the moon

B: Moon is b/w the earth and the sun

C: Sun is b/w the earth and the moon

D: Earth is at right angles to the direction of the sun and the moon

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Earth is b/w the sun and the moon

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