chemistry MCQs – Page 61

Practise multiple-choice questions from chemistry for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemistry Mcqs
1201. The solution remaining after the formation of crystals is called ___________________?
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A. Mother liquor

B. Dilute solution

C. Residue

D. both A & B

1202. Formula of Galena is________?
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A. HgS

B. FeS2

C. PbS

D. AS2S3

1203. The radiations with highest speed are _______.
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A. AOT

B. Alpha radiations

C. Gamma radiations

D. Beta radiations

1204. In a group, atomic radii increase due to successive increase of _________ ?
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A. Neutron shells

B. Electronic shells

C. Nucleus

D. Proton shells

1205. Element that have same number of neutrons are called__________?
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A. isotone

B. None of these

C. isobar

D. isotope

1206. Cations possess __________ charge?
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A. Neutral

B. +ve

C. None

D. #NAME?

1207. The process in which solid changes directly into vapours without passing through liquid state?
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A. Evaporation

B. Sublimation

C. Decantation

D. None

1208. The rate of formation of ozone depends on the flux of:
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A. Gamma rays

B. Ultra violet radiation

C. Infrared radiation

D. visible radiation

1209. Column of manometer which faces liquid is __________ ?
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A. Compressed

B. Raised

C. Depressed

D. Remains same

1210. Which one does not give borax bead test_________________?
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A. Copper sulphate

B. Nickel sulphate

C. Cobalt sulphate

D. Barium sulphate
1211. According to Journal of Biological Chemistry 158, human brain and heart are composed of ________water?
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A. 75%

B. 73%

C. 89%

D. 81%

1212. What is chemical symbol for Tungsten?
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A. Z

B. T

C. W

D. Tn

1213. The IUPAC name of pyridines is__________?
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A. Azolo

B. Diazine

C. Azine

D. Azolidins

1214. The practical problem in Hydrogen production is it:______________?
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A. Size

B. Chemical property

C. Valency

D. Weight
1215. Which of the following is not the name of any scientist?
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A. Hunds rule

B. Pauli exclusion principle

C. Aufbaus principle

D. Le-Chateliers principle

1216. Which of the following is more Basic in nature?
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A. 3 Alkyl ammine

B. Ammonia

C. 1Alkyl ammine

D. 2 Alkyl ammine

1217. Which is artificial manmade fiber?
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A. Rayon

B. None of these

C. Saffron

D. Boron

1218. Where does the oxygen that keeps us alive come from?
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A. Carbonates absorbed from soil

B. Carbon dioxide

C. Oxides of minerals

D. Water
1219. The systematic name of sucrose is_______?
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A. 11-?-D-glucopyranosyl-2-?-D-fructofuranoside

B. 1-?-D- glucopyranosyl-2-?-D-fructopyranoside

C. 1-?-D- glucofuranosyl-2-?-D- fructopyranoside

D. 1-?- D- glucofuranosyl-2-?- D- fructofuranoside

1220. Which statement is incorrect ?
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A. All the metals are good conductor of electricity

B. All the metals are good conductor of heat

C. All the metals form acidic oxides

D. All the metals form positive ions