Thermal energy transfer required to change a liquid into gas without changing its temperature is called...? Mcqs

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Thermal energy transfer required to change a liquid into gas without changing its temperature is called...?

(A) Latent heat of freezing
(B) Latent heat of vaporization

(C) Latent heat of boiling
(D) Latent heat of melting

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Sea water (Salt water) freezes at ...?

(A) Same temperature as fresh water.
(B) Slightly higher temperatures than fresh water.

(C) Slightly higher temperature than fresh water.
(D) Sea water does not freeze

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Disease beri beri is because of___________...?

(A) Lack of green vegetables in diet
(B) Use of milled rice

(C) Deficiency of calcium in bones
(D) Poor use of citrus fruits

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The Molecule consist of two atoms is _____...?

(A) Monoatomic molecule
(B) Polyatomic molecule

(C) Hetero atomic molecule
(D) Di atomic molecule

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The process of removing water in the form of vapour in the form of leaves is called...?

(A) Nutrition
(B) respiration

(C) perspiration
(D) transpiration

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Where do most of Asteroids lie...?

(A) In asteroid belt between the orbits of Mars and Jupiter
(B) In asteroid belt between the orbits of Mars and Venus

(C) In asteroid belt between the orbits of Jupiter and Venus
(D) Everywhere in the sky

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Which isotope is used to identity efficiency rates of organic and inorganic fertilizers...?

(A) Phosphorus - 32
(B) Carbon - 14

(C) Lead - 210
(D) Nitrogen - 15

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Refrigerator works on the phenomenon of ________ of heat transfer....?

(A) Conduction
(B) Convection

(C) Radiation
(D) All of these

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The uniform or constant fact of nature, virtually an irrefutable theory is _____...?

(A) Scientific theory
(B) Scientific hypothesis

(C) Scientific reasoning
(D) Scientific law

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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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