Which layer of the atmosphere reflects radio waves back to the earth’s surface...? Mcqs

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Which layer of the atmosphere reflects radio waves back to the earth’s surface...?

(A) Troposphere
(B) Stratosphere

(C) Ozone layer
(D) Ionosphere

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State of matter which has definite shape and volume is called __________...?

(A) Liquid
(B) Gas

(C) Solid
(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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Vaccination can be administered ______...?

(A) After infection
(B) Before infection

(C) During infection
(D) All are Correct

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Dyne is the unit of...?

(A) Force
(B) Pressure

(C) Velocity
(D) Momentum

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All are postulates of cell theory except...?

(A) New cell is derived from pre-existing cells
(B) Cell does not contain the hereditary material

(C) All living organisms are made up of one or more cells
(D) Cell is the fundamental unit of life

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Which of the following is used as a fuel to produce heat energy...?

(A) Biomass Energy
(B) Solar Energy

(C) Hydro Energy
(D) Wind Energy

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Animal that eat the producers (plants) are called...?

(A) Primary Consumers
(B) Secondary Consumers

(C) Tertiary Consumers
(D) None of these

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How does the Navstar GPS work for different applications (5)...?

(A) see the answer
(B) empty

(C) empty
(D) empty

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Cotyledons are very Important because they ________...?

(A) Store Food
(B) Store Water

(C) Store Air
(D) None of these

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