23. In a salt bridge, KCl is used because (from www.jobsassist.com)
a) (a) It is an electrolyte
b) (b) The transference number of K+ and Cl¯ is nearly the same
c) (c) It is a good conductor of electricity
d) (d) All of the above
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31. Which of the following is not an oxide ore? (from www.jobsassist.com)
a) (a) Cassiterite
b) (b) Siderite
c) (c) Pyrolusite
d) (d) Bauxite
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21.Which is the most acidic amongst (from www.jobsassist.com)
a) (a) Nitrophenol
b) (b) O-toulene
c) (c) Phenol
d) (d) Cresol
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22. Pure water does not conduct electricity because it is (from www.jobsassist.com)
a) (a) Almost not ionised
b) (b) Low boiling
c) (c) Neutral
d) (d) Readily decomposed
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25. The hydrolysis of alkyl halides by aqueous NaOH is best termed as (from www.jobsassist.com)
a) (a) Electrophylic substitution reaction
b) (b) Electrophylic addition reaction
c) (c) Nnucleophylic addition reaction
d) (d) Nucleophylic substitution reaction
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26. The hydrocarbon that gives a red precipitate with ammoniacal cuprouschloride is (where 'º' means a triple bond) (from www.jobsassist.com)
a) (a) CH3-CH2-CH2-CH3
b) (b) CH3-CºC-CH3
c) (c) CH2=CH-CH=CH2
d) (d) CH3-CH2-CºCH
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27. Which of the following reagents is neither neutral nor basics (from www.jobsassist.com)
a) (a) Lucas' reagent
b) (b) Tollen's reagent
c) (c) Bayer's reagent
d) (d) Fehling's solution
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28. The substance which is most easily nitrated (from www.jobsassist.com)
a) (a) Toluene
b) (b) Bbenzene
c) (c) Nitrobenzene
d) (d) Chlorobenzene
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30. Which of the following oxides cannot be reduced by carbon to obtain metal (from www.jobsassist.com)
a) (a) ZnO
b) (b) Al2O3
c) (c) Fe2O3
d) (d) PbO
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40. A solution of KMnO4 is reduced to MnO2 .The normality of solution is 0.6.Themolarity is (from www.jobsassist.com)
a) (a) 1.8M
b) (b) 0.6M
c) (c) 0.1M
d) (d) 0.2M
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