Main constituent in air is ___________...?

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Main constituent in air is ___________...?

(A) Oxygen

(B) Nitrogen

(C) Hydrogen

(D) Helium

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The density of Air is_____________...?

(A) 0.225 kg/m3

(B) 1.025 kg/m3

(C) 1.225 kg/m3

(D) 1.425 kg/m3

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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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The main Constituent of Biogas is__________...?

(A) Methane

(B) Hydrogyn

(C) Oxygen

(D) Carbin dioxide

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The most densest substance on the Earth is __________....?

(A) Platinum

(B) Copper

(C) Steel

(D) Osmium

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The main factor for determining a region’s climate is ___________...?

(A) Latitude

(B) Temperature

(C) Longitude

(D) None of them

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The only non metal exists in liquid state is ___________...?

(A) Mercury

(B) Bromine

(C) Phosphorus

(D) Iodine

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Wireless transmission can be done via _____________...?

(A) A Infrared waves

(B) Radio waves

(C) Microwaves

(D) All of these

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Year is longest on : _____________...?

(A) Mercury

(B) Venus

(C) Mars

(D) The Earth

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Stars are huge balls of gas mainly consist of _ and __...?

(A) Oxygen, Nitrogen

(B) Helium, Oxygen

(C) Hydrogen, Helium

(D) Nitrogen, Carbon

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In human body there are_________________kinds of bones...?

(A) 3

(B) 4

(C) 5

(D) 6

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Steradian is the unit of_______________...?

(A) Solid angle

(B) Liquid angle

(C) Gas angle

(D) Plain angle

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Main use of salt in diet is to : ___________...?

(A) ease the process of cooking

(B) increase the taste

(C) produce small amount of hydrochloric acid required for digestion

(D) inclease solubility of food particles in water

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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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The repetition of property after a certain interval called ___________...?

(A) Electron efinity

(B) Atomic radius

(C) periodicity of property

(D) none of these

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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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The Earth is rotating constantly and in ________ direction....?

(A) South

(B) North

(C) East

(D) Same

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The atmosphere of moon consists of______________...?

(A) 90% Hydrogen, 10% Nitrogen

(B) 80%Nitrogen, 20% Hydrogen

(C) 60% Nitrogen, 40%inert gases

(D) None

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Acid deposition causes ______________________...?

(A) the greenhouse effect to lessen

(B) lakes and forests to die

(C) acid indigestion in humans

(D) all the above are correct

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A photostat machine works on _____________...?

(A) electromagnetic image making

(B) magnetic image making

(C) thermal image making

(D) electrostatic image making

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The most abundant constituent in Air is ______...?

(A) Hydrogen

(B) Oxygen

(C) Nitrogen

(D) Carbon Dioxide

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Winter Solstice means____________...?

(A) longest night

(B) longest day

(C) smallest night

(D) smallest day

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There are three types of plate boundaries i.e Divergent, Convergent and____________...?

(A) Normal

(B) Transform

(C) Complex

(D) Plain

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Nitrogen occurs in plant and animals in the form of ___________...?

(A) Minerals

(B) Fats

(C) Carbohydrates

(D) Proteins

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Water has maximum density at____________...?

(A) 0°C

(B) 4°C

(C) 4° K

(D) 4.8°C

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Earthquakes occur most frequently at __________...?

(A) Plate boundaries

(B) Plate surface

(C) Ocean beds

(D) All of the above

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Dry ice is ___________...?

(A) Methane hydrate

(B) Liquid Nitrogen

(C) Solid Carbon dioxide

(D) Frozen Water

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The first organism on earth were _______________...?

(A) autotrophs

(B) heterotrophs

(C) saprotrophs

(D) none of these

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LPG consists mainly of : ___________...?

(A) Methane,Ethane & Hexane

(B) Ethane,Hexane &Nonane

(C) Methane,Butane & Propane

(D) All of these

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Granite is a____________...?

(A) Metamorphic rock

(B) Igneous rock

(C) Sedimentry rock

(D) None of these

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Most important effect of the moon on earth is that it___________...?

(A) Causes weather change

(B) Causes earthquakes

(C) Causes solar and lunar eclipse

(D) Effects tides of the ocean

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LPG consists of mainly:___________...?

(A) Methane, Ethane and Hexane

(B) Ethane, Hexane and Nonane

(C) Methane, Hexane and Nonane

(D) Methane, Butane and Propane

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Curie is a unit of measuring the intensity of ___________...?

(A) Radioactivity

(B) Quantity of Heat

(C) Work or Energy

(D) Power

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The ‘stone’ formed in human kidney consist mostly of_____________...?

(A) Calcium oxalate

(B) Sodium acetate

(C) Magnesium sulphate

(D) Calcium

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Main constituent in air is ___________...? Mcqs

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