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Quiz 209
Mdcat-past-papers Quiz
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4161. Alcohol in which carbon atom bonded to OH group is further attached with three alkyl group is:
Tertiary alcohol
Primary alcohol
Aromatic alcohol
Secondary alcohol
4162. Select one which is alcohol:
CH₃−CH₂−Br
CH₃−O−CH₃
CH₃COOH
CH₃−CH₂−OH
4163. Which one of the following compounds is known as tertiary alcohol?
1-Propanol
2-Methyl-2-propanol
2-Methyl-1-propanol
2-Propanol
4164. Which of the following compounds will give a secondary alcohol after reaction with NaBH₄?
CH₃COOCH₃
CH₃COCH₃
CH₃CH₂COOH
CH₃CH₂CHO
4165. Which of the following reactions is used for the production of alcohols on industrial scale?
Hydrogenation of alkenes
Hydroxylation of alkenes
Hydration of alkenes
Hydrohalogenation of alkenes
4166. When ethanol is warmed with ethanoic acid in the presence of a strong acid catalyst, an ester ethanoate is formed. During this reaction:
Alcohol is reduced
O−H bond of ethanoic acid is broken
O−H bond of ethanol is broken
Acid is oxidized
4167. Consider the following reactions: C₂H₅OH + PCl₅ → What products may be formed?
C₂H₅Cl
C₂H₅Cl + HCl
C₂H₅Cl, POCl₃ and HCl
C₂H₅Cl and POCl₃
4168. Primary, Secondary, and Tertiary alcohols can be identified and distinguished by:
Lucas test
Iodoform test
Baeyer's test
Silver mirror test
4169. Which one of the following alcohols is indicated by formation of yellow crystals in the iodoform test?
Methanol
Ethanol
Butanol
Propanol
4170. Which one of the following groups is indicated when HCl is formed by reaction of ethanol with phosphorus pentachloride?
Amino group
Hydroxyl group
Halide group
Hydride group
4171. Which one of the following is not able to denature ethanol?
Methanol
Lactic acid
Pyridine
Acetone
4172. How will you distinguish between methanol and ethanol?
By Lucas test
By silver mirror test
By oxidation
By iodoform test
4173. To produce absolute alcohol (100%) from rectified spirit (95.6% alcohol), the remaining 4.4% water must be removed by a dry agent such as:
Calcium oxide
Calcium chloride
Calcium carbonate
Carbon monoxide
4174. Which one of the following is an indication of positive iodoform test?
Formation of H₂O
Release of H₂ gas
Brick red precipitate
Yellow crystal
4175. What is the common name of 1,2,3-propanetriol?
Butyl alcohol
Glycol
Glycerol
Propyl alcohol
4176. Dehydration of alcohol gives which of the following product in the presence of H₂SO₄ at 140°C?
Acetaldehyde
Ethyl acetate
Diethyl ether
Ethyl chloride
4177. Complete oxidation of alcohol gives which of the following?
Aldehyde
Carboxylic acid
Alkane
Peptones
4178. Secondary alcohols have:
One beta carbon
No beta carbon
Two beta carbon
Four beta carbon
4179. Oxidation of primary alcohol gives:
Aldehyde
Ketone
Alkane
Alkene
4180. Primary alcohol when reacts with halogen acid, the product is:
Secondary alcohol
Tertiary alcohol
Primary alcohol
Primary alkyl halide
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