What is the molecular weight of Ammonia (NH3) ________ ...? Mcqs

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What is the molecular weight of Ammonia (NH3) ________ ...?

(A) 17.031 g/mol
(B) 18.031 g/mol

(C) 19.031 g/mol
(D) 27.033 g/mol

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What is the Unit of Force...?

(A) Newton
(B) Joule

(C) Watt
(D) Metre

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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 device which converts chemical energy into electrical energy is called __________...?

(A) motor
(B) generator

(C) moving-coil meter
(D) battery

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Which planet looks reddish in the night sky ...?

(A) Jupiter
(B) Saturn

(C) Mars
(D) MercurY

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Largest Galaxy in the Universe is_________...?

(A) Andromeda Galaxy
(B) Milky-Way

(C) Spiral Galaxy
(D) Horseshoe Galaxy

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A method of removing suspended sand particles and insoluble physical impurities from water is known as...?

(A) Sedimentation
(B) Filtration

(C) Distillation
(D) Chlorination

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In modern periodic table, how many groups are there...?

(A) 12
(B) 18

(C) 7
(D) 8

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A bird that can fly backwards...?

(A) Bat
(B) Humming Bird

(C) Crimson Sun Bird
(D) Cardinal Bird

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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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