Who was the first to measure the earth’s radius

A: Copernicus

B: Galileo

C: Ptolemy

D: Eratosthenes

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Eratosthenes

Total volume of blood in a normal adult human being is

A: 3-4 liters

B: 5-6 liters

C: 8-10 liters

D: 10-12 liters

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5-6 liters

The large plates of solar pannels are painted?

A: White

B: Red

C: Yellow

D: Black

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Black

Stripes on each side of “Grévy’s Zebra” is about____?

A: 30+

B: 20+

C: 80+

D: 36+

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80+

How many calories are there in 1 gram of carbohydrate?

A: 2

B: 2

C: 4

D: 10.25

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4

The deepest place on earth is _______?

A: Mariana Trench

B: Trench

C: Mangrove

D: Groove

E: None of these

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Mariana Trench

Which of the following acid is used in Ink?

A: Acetic

B: Valeric

C: Formic

D: Tannic

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Tannic

The human brain uses_____ percent of the total oxygen and blood in the body?

A: 12

B: 20

C: 35

D: 48

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20

Bromine is a_________?

A: red-brown liquid

B: black solid

C: colourless gas

D: highly inflammable gas

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red-brown liquid

The ozone layer is at height of___kilometers from the surface of the Earth?

A: 20 to 30

B: 10 to 20

C: 30 to 40

D: 40 to 50

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20 to 30

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