When an acid reacts with a metal, which one of the following gas is usually liberated...? Mcqs

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When an acid reacts with a metal, which one of the following gas is usually liberated...?

(A) Ammonia Gas
(B) Chlorine

(C) Oxygen
(D) Hydrogen gas

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The evaporation of water from aerial parts of the plant especially through leaves is called...?

(A) Translocation
(B) Photosynthesis

(C) Respiration
(D) Transpiration

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Which of the following is not a characteristic of a wave...?

(A) An amplitude
(B) Period

(C) Mass
(D) Velocity

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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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Which one is the world’s largest mangrove forest(s)...?

(A) Changa Manga Forest
(B) Amazon Forest

(C) Sundarbans Forest
(D) None of the above

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The lowest temperature ever recorded on the Earth is...?

(A) –89.2 °C
(B) –86.2 °C

(C) –83.2 °C
(D) –92.2 °C

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What is responsible for the high resolution of the electron microscope...?

(A) High magnification
(B) Short wavelength of the electron beam

(C) Use of heavy metals strains
(D) Very thin section

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Pig iron is also called________...?

(A) Cast iron
(B) Steel

(C) Wrought iron
(D) Stainless steel

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The extremely cold temperatures in the polar region of moon mean that it can act as a kind of __________ where things do not undergo much change....?

(A) Time capsule
(B) Light capsule

(C) Meta capsule
(D) Natural capsule

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Organisms that eat all the dead and waste products of producers and consumers are called...?

(A) Producers
(B) Consumers

(C) Decomposers
(D) None

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