chemistry MCQs – Page 56

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 Review each marked answer and report any item that may be outdated or unclear.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
1101. Transition elements, in general, exhibit the following properties, except one. Name that property?
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A. Variable oxidation state

B. Formation of alloys

C. Natural Radioactivity

D. Tendency to form complexes

1102. Molozonide is unstable and changes into ozonide on_________________?
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A. oxidation

B. rearrangement

C. reduction

D. hydrolysis

1103. Which one is Chloroform_________________?
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A. CH2Cl2

B. CH3Cl

C. CHCl3

D. CCl4

1104. The average salinity of sea water is________?
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A. 3%

B. 2%

C. 3.5%

D. 2.50%

1105. The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called__________________?
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A. Filterate

B. Extract

C. Molasses

D. Mother liquor

1106. Which one of the following is termed as benzul alcohol ?
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A. C6H5CH2OH

B. C6H5COOH

C. C6H5CH(OH)2

D. C6H5OH

1107. Which C-X bond has the highest bond energy per mole ?
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A. C-C

B. C-F

C. C-I

D. C-Br

1108. Parkes process is used in the extraction of________?
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A. Iron

B. Sodium

C. Silver

D. Zinc

1109. Which one of the following reactants will be required to form straight chain alcohol by using Grignard reagent________________?
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A. formaldehyde

B. ketone

C. ethylene epoxide

D. both A & C
1110. The IUPAC suffix used for _______ NC group?
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A. Nitrile

B. Carbylamines

C. Cyanide

D. Isocyanides

1111. Indicate the correct statement__________________?
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A. Cl2 is insoluble in water

B. Cl2 is the strongest oxidizing agent

C. I2 is a volatile solid

D. Br2 is more reactive than Cl2

1112. Which metal is used as a reducing agent in Smelting______?
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A. Al

B. Zn

C. C

D. Cu

1113. Bromine can be liberated from KBr solution by the action of _______________?
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A. Chlorine

B. Ki

C. Iodine solution

D. NaCl

1114. Raney nickel is prepared from ______________________ by treating with caustic soda?
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A. Ni-Cu alloy

B. Ni-Al alloy

C. Ni-Mg alloy

D. Ni-Fe alloy

1115. The common oxidation state of lanthanides is_________?
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A. 4

B. +3

C. 2

D. 1

1116. Sum of protons and neutrons in an atom gives off _________ ?
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A. Nucleon numbera

B. Mass number

C. Atomic number

D. Both A and B
1117. Commercial detergents contain mainly _____________?
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A. ammad Ali Kunbhar

B. RSNa

C. RONa

D. RCOON

E. ROsO3Na

1118. Introduction of nitro group in a molecule is called___________________?
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A. halogenation

B. amination

C. sulphonation

D. nitration
1119. Polyethylene Glycols are used in the preparation of which type of detergents?
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A. Non-ionic detergents soap

B. Cationic detergents

C. All of above

D. Anionic detergents

1120. The halogen which reacts spontaneously with gold (Au) to form Au+3 is ________________?
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A. Cl2

B. Br2

C. I2

D. F2