How many major gases have been used in re​frig​er​a​tors since its invention...? Mcqs

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How many major gases have been used in re​frig​er​a​tors since its invention...?

(A) 2
(B) 3

(C) 4
(D) 5

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Which of these is NOT an example of a renewable energy source...?

(A) Wind energy
(B) solar

(C) Coal
(D) Hydroelectric power

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A fathom is equal to ________feets...?

(A) 6
(B) 5

(C) 4
(D) 3

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A Vegetable containing sulphur is____________...?

(A) Potato
(B) Cabbage

(C) Brinjal
(D) Pumpkin

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The Oort cloud is estimated to be about __________ AU away from the sun...?

(A) 100,000
(B) 200,000

(C) 300,000
(D) 400,000

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What is an example of a synthesis reaction...?

(A) Water decomposing into Hydrogen and Oxygen
(B) Carbon combining with Oxygen to form Carbon Monoxide

(C) Nitrogen and Oxygen combining to form Nitrogen Dioxide
(D) Hydrogen and Oxygen combining to form water

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In which state of matter, the particles arrangement is regular and closely packed...?

(A) Solid
(B) Liquid

(C) Gas
(D) None

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The heaviest naturally-occurring element is_________...?

(A) Radium
(B) Platinum

(C) Uranium
(D) Cadmium

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Which type of the following chemical reaction is CaO + CO2 → CaCO2:...?

(A) Combination Reaction
(B) Decomposition Reaction

(C) Neutralization Reaction
(D) None

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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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