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Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Catalytic reduction (Hydrogenation) of carbon monooxide with H2 under high pressure and temperature gives methyl alcohol. What is this process is known as?
[A]
Baeyer’s test
[B]
Hofmann’s reaction
[C]
Kolb processn
[D]
BASF process
(2)
Which of the following statements is incorrect regarding preparation of alcohols?
[A]
Aldehydes and Ketones on catalytic reduction by [H] give primary alcohol and secondary alcohol respectively
[B]
Ketones on reaction with Grignard’s reagent gives tertiary alcohol
[C]
Aldehydes on reaction with Grignard’s reagent gives primary or secondary alcohol
[D]
Alkyl halides on reaction alcoholic potash gives alcohol
Answer: Alkyl halides on reaction alcoholic potash gives alcohol
(3)
Which of the following steps is not used in the fermentation of starch into ethyl alcohol?
[A]
Hydrolysis of starch into maltose by diastase present in barley
[B]
Conversion of maltose into glucose by maltase present in yeast
[C]
Conversion of glucose into ethanol by zymase present in yeast
[D]
Conversion of sucrose into glucose and fructose by sucrase present in yeast
Answer: Conversion of sucrose into glucose and fructose by sucrase present in yeast
(4)
15% pure ethyl alcohol (wash) on fractional distillation gives 95% ethyl alcohol by weight which is commonly known as which of the following terms?
[A]
Wash
[B]
Absolute alcohol
[C]
Rectified spirit
[D]
Methylated spirit
(5)
Ethyl alcohol obtained by fermentation of starch or molasses is called wash, and what is it’s purity?
[A]
15%
[B]
99%
[C]
99.9%
[D]
95%
(6)
Which is the only alcohol that can be prepared by the indirect hydration of alkene?
[A]
Ethyl alcohol
[B]
Propyl alcohol
[C]
Isobutyl alcohol
[D]
Methyl alcohol
(7)
Acid catalysed hydration of alkenes except ethene leads to the formation of which of the following?
[A]
Mixture of secondary and tertiary alcohols
[B]
Mixture of secondary and tertiary alcohols
[C]
Secondary or tertiary alcohol
[D]
Primary alcohol
Answer: Mixture of secondary and tertiary alcohols
(8)
Among the alkenes which one produces tertiary butyl alcohol on acid hydration?
[A]
(CH3)2C=CH2
[B]
CH3-CH=CH-CH3
[C]
CH3CH2CH=CH2
[D]
CH3CH=CH2
(9)
Which of the following way is not a method of preparation of alcohol?
[A]
Grignard reaction
[B]
Reduction of an aldehyde, ketone, or carboxylic acid with the appropriate reducing agent
[C]
Substitution reaction of hydroxide or water on the appropriate alkyl halide
[D]
Haber’s process
(10)
Isopropyl methyl ether when treated with cold hydrogen iodide gives which of the following alcohol?
[A]
isopropyl iodide and methyl iodide
[B]
isopropyl alcohol and methyl iodide
[C]
isopropyl alcohol and methyl alcohol
[D]
isopropyl iodide and methyl alcohol
Answer: isopropyl alcohol and methyl iodide
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