Triple point of water is _________...?

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Triple point of water is _________...?

(A) 271 K

(B) 272.2 K

(C) 273.16 K

(D) None of these

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The gas used in a refrigerator to cool water is___________...?

(A) Nitrogen

(B) Carbon dioxide

(C) Methane

(D) Tetrafluoroethane

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What percentage of earth’s water supply is fresh water___________...?

(A) 3%

(B) 5%

(C) 21%

(D) None of these

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The Great Spot is on the planet __________...?

(A) Saturn

(B) Venus

(C) Mars

(D) Jupiter

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Most of the ozone in the atmosphere is concentrated in the _____________...?

(A) Mesosphere

(B) Troposphere

(C) Stratosphere

(D) ionosphere

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Main constituent in air is ___________...?

(A) Oxygen

(B) Nitrogen

(C) Hydrogen

(D) Helium

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Boiling point of pure water is __________...?

(A) 90’C

(B) 97’C

(C) 100’C

(D) None of these

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The melting point of ice is_________...?

(A) 00C

(B) 1000C

(C) 40C

(D) -40C

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pH value of water is _________...?

(A) 5

(B) 5-6

(C) 8.7-10.5

(D) 6.5-8.5

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The SI unit of Dipole moment is __________...?

(A) Debye

(B) Cm

(C) Weber

(D) Coulumb

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The first organism on earth were _______________...?

(A) autotrophs

(B) heterotrophs

(C) saprotrophs

(D) none of these

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The density of water is __________...?

(A) 1 g/cm3

(B) 1.5 g/cm3

(C) 2 g/cm3

(D) none of these

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Heavy mechanical complex use a large amount of water for_________...?

(A) Cooling

(B) Freezing

(C) Washing

(D) Mixing

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There are many different types of frozen water on Earth. Collectively, they are known as the: ___________...?

(A) Hydrosphere

(B) Cryosphere

(C) Frigid Zone

(D) Biosphere

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Exosphere interacts with ___________ of Earth at roughly distance of 10,000 km....?

(A) Electrosphere

(B) Magnetosphere

(C) Spectrosphere

(D) Echosphere

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Most soluble in water is:__________...?

(A) Camphor

(B) Sulphur

(C) Common salt

(D) Sugar

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1 Meter = _________...?

(A) 1000 centimeters (cm)

(B) 100 centimeters (cm)

(C) 10 centimeters (cm)

(D) 10000 centimeters (cm)

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In the Centigrade scale, the freezing point of water is _ and the boiling point of water is __...?

(A) 0°C, 50°C

(B) 10°C, 100°C

(C) 0°C, 100°C

(D) 5°C, 90°C

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In Fahrenheit scale the boiling point of water is ______...?

(A) 208°F

(B) 210°F

(C) 212°F

(D) 214°F

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There is a hole in the Ozone Layer at__________...?

(A) South Pole

(B) North Pole

(C) Both A and B

(D) None of These

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At night, Plants intake and release ...?

(A) Oxygen – Carbon dioxide

(B) Carbon dioxide – Oxygen

(C) Oxygen – Carbon monoxide

(D) None of theseCarbon monoxide – Oxygen

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Density of Water is_________...?

(A) 897 kg/m³

(B) 997 kg/m³

(C) 1000 kg/m³

(D) 1025 kg/m³

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In Fahrenheit scale the freezing point of water is ______...?

(A) 30°F

(B) 32°F

(C) 34°F

(D) 100°F

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What is the number of known crystalline phases of water ________...?

(A) 4

(B) 8

(C) 17

(D) 18

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Oxidation is a chemical reaction involving the __________...?

(A) Gain of Electrons

(B) Loss of Electrons

(C) Gain of Protons

(D) Loss of Protons

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Freezing point of water is__________...?

(A) 0°C

(B) -2°C

(C) -4°C

(D) None of above

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In Fahrenheit scale the freezing point of water is and boiling point of water is _ ...?

(A) 32°F, 212°F

(B) 212°F, 32°F

(C) 35°F, 210°F

(D) 210°F, 35°F

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Digestion of food is completed in the __________...?

(A) small intestine

(B) large intestine

(C) stomach

(D) Liver

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In blood, the percentage of water is___________...?

(A) 75%

(B) 85%

(C) 90%

(D) 95%

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The ability of the Eye to see in the dark, is due to the production of a purple pigment known as________...?

(A) Carotene

(B) Rhodopsin

(C) Iodopsin

(D) Retinene

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Water vapour beyond the dew point result in_________...?

(A) Precipitation

(B) Hailstorm

(C) Condensation

(D) Formation of ice

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The red blood cells originate in the ____________...?

(A) Brain

(B) Muscles

(C) Ligaments

(D) Bone Marrow

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Triple point of water is _________...? Mcqs

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