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What is the SI unit of temperature ?

Celsius
Fahrenheit
Rankine
Kelvin

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0(zero) kelvin equals to -273.12 Degree Celsius. 0(zero) kelvin is also known as absolute zero.

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The term 'cardiac' is related to what ?

Heart
Kidney
Liver
Brain

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What is the hardest natural material known ?

Graphite
Diamond
Steel
Iron

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The hardness is defined as resistance to scratching and is graded between 1 (softest) and 10 (hardest) using the Mohs scale of mineral hardness. Diamond has a hardness of 10 (hardest) on this scale.

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In the Chemical Composition of the Crust, which compound has a share of more than 60% ?

Magnesia
Lime
Alumina
Silica

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What is the name given to the green pigment in plants ?

Chlorophyll
Starch
Heme
Tendrils

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Chlorophyll is a green pigment found in most plants, algae, and cyanobacteria. Chlorophyll absorbs light most strongly in the blue and red but poorly in the green portions of the electromagnetic spectrum, hence the green colour of chlorophyll-containing tissues such as plant leaves.

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How is the age of a tree determined ?

Annual rings count
Leaves count
Branches count
Roots count

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These rings can be counted to determine the age of the tree, and used to date cores or even wood taken from trees in the past. This practice is known as the science of dendrochronology.

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What is the boiling point of water ?

101 degrees
100 degrees
99 degrees
98 degrees

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Which country launched the first Earth-orbiting artificial satellite (Sputnik 1) ?

Soviet Union
USA
Germany
England

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It was launched into an elliptical low earth orbit on 4 October 1957.

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In which year , India launched it's first satellite (Aryabhata) ?

1974
1975
1976
1977

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It was launched by the Soviet Union on 19 April 1975 from Kapustin Yar using a Cosmos-3M launch vehicle. Aryabhata was built by the Indian Space Research Organization (ISRO).

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What is the main ingredient in nail polish remover ?

Ethanol
Acetone
Sodium biCarbonate
Benzol

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It is also used as paint thinner and sanitary cleaner.

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