Quiz 22- Chemistry-General Science: General Knowledge Question & Answers

211 Q) "Assertion (A) The natural rubber is the polymer of m-isoprene. 

Reason (R) Poly-rram-isoprene is called Gutta-percha."

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

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B

212 Q) In the modern food processing industries, the foodstuffs are found to be preserved in the brine solution. What is the brine solution?

(a)Saturated solution of MgCl2

(b)Saturated solution of carbonic acid

(c)Saturated solution of NaCl

(d)Saturated solution of FeCl3

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C

213 Q) Which one of the following is associated with the formation of brown air in traffic congested cities?

(a)Sulphur dioxide

(b) Nitrogen oxide

(c)Carbon dioxide

(d)Carbon monoxide

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B

214 Q) What is the process by which a lipid mass is converted into a number of small droplets?

(a) Saponification

(b)Emulsification

(c) Oxidation

(d)Dehydrogenation

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B

215 Q) Which one of the following alkali metals is the lightest?

(a) Na

(b) Cs

(c) K

(d) Rb

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C

216 Q) "Which one of the following consists only the ores of magnesium? "

(a) Magnesite, carnallite, cassiterite, dolomite, epsom salt

(b) Magnesite, carnallite, dolomite, kieserite, epsom salt

(c) Magnesite, carnallite, dolomite, galena, malachite

(d) Magnesite, cassiterite, kieserite, galena, malachite

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B

217 Q) " Assertion (A) A covalent bond is formed by the sharing of pairs of electrons between atoms. 

Reason (R) Covalency is greatest between atoms of different electronegativities."

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

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C

218 Q) What is called as Jeweller's rouge?

(a) Ferric carbonate

(b)Ferrous carbonate

(c) Ferrous oxide

(d) Ferric oxide

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D

219 Q) Which one among the following metal ions is essential for erythropoesis in human beings?

(a) Ca2+ ion

(b) Mg2+ ion

(c) Cu2+ ion

(d) Fe2+ ion

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D

220 Q) "Which of the following gases in the atmosphere is/are responsible for acid rains?.

1.Oxides of sulphur 

2.Oxides of nitrogen 

3.Oxides of carbon 

Select the correct answer using the codes given below"

(a)1 and 2

(b) 1 and 3

(c) Only 2

(d) 1, 2 and 3

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A