12th class (Fsc) Chemistry unit 13 MCQs
51. Which one of the following can be used to convert alpha-amino to alpha-hydroxylic acid?
a. NaNO3 and HNO3
b. HCL and NaNO3
c. NaNO2 and HCI
d. NaCL3 and HNO
52. Acetic acid is manufactured by:
a. Ozonolysis
b. Distillation
c. Esterification
d. Fermentation
53. A carboxylic acid contains:
a. A hydroxyl group
b. A hydroxyl group
c. A carboxyl and an aldehyde group
d. A carboxyl group
54. Which acid is used in the manufacture of synthetic fiber:
a. Carbolic acid
b. Formic acid
c. Acetic acid
d. Oxalic acid
55. which following derivative can not be prepared directly from acetic acid:
a. Acetic anyhdride
b. Acetamide
c. Ethyl acetate
d. Acetyl chloride
56. Which reagent is used to reduced a carboxylic group to an alcohol.
a. NaBH4
b. H2/Ni
c. LiAIH4
d. H2/Pt
57. The solution of which acid is used for seasoning of food:
a. Benzoic acid
b. Formic acid
c. Butanoicacid
d. Acetic acid
58. An aqueous solution of an organic compound reacts with sodium carbonate to produce carbon dioxide gas which one of the following could be the organic compound.
a. CH3COOC2H5
b. CH2 =CH-CH3
c. CH3 -CH2 – COOH
d. CH3 -CHO
59. Which of the following is not a fatty acid?
a. Phthalic acid
b. Prpanoic acid
c. Butanoic acid
d. Acetic acid
60. Acetamide is prepared by
a. Heating ethyl acetate
b. Heating ammonium acetate
c. The hydrolysis of methyl cyanide
d. Heating methyl cyanide
61. Which one of the following is not a fatty acid:
a. Phthalic acid
b. Propionic acid
c. Butanoic acid
d. Acetic acid
62. Tryocine was first isolated from:
a. Butter
b. Sugar
c. Milk
d. Cheese
63. Which derivative cannot be prepared directly from acetic acid:
a. Acetyl anhydride
b. Acetamide
c. Acetyl chloride
d. None of these
64. A carboxylic acid contain:
a. A hydroxyl and carboxyl group
b. A hydroxyl group
c. A carboxyl and aldehyde group
d. A carboxyl group
65. The organic acid that does not have carboxly group:
a. Formadehyde
b. Formic acid
c. Acetone
d. Picric acid
66. Which one of the following is an unsaturated carboxylic acid?
a. Succinic acid
b. Malonic acid
c. Maleic acid
d. Oxalic acid
67. Molar mass of CH3 COOH obtained by elevation of boiling point method is:
a. 120
b. 30
c. 180
d. 60
68. Which one of the following acid is used to prepare synthetic fiber:
a. Acetic acid
b. Carbonic acid
c. Butyric acid
d. Formic acid
69. A cyclic dimmer of acetic acid is formed when it is 1 atoms in a dimmer ring are:
a. Four
b. One
c. Six
d. Two
70. Carboxylic acid exist as cyclic dimmer in solution with:
a. Benzene
b. Alcohol
c. Water
d. All
71. Which of the following reagent will react with both aldehydes and ketones:
a. Fehling’s reagent
b. Grignard reagent
c. Benedict’ reagent
d. Tollenl’s reagent
72. Ester amylacetate has the flavor of:
a. Orange
b. Raspberry
c. Banana
d. Apricot
73. The flavor of amyl acetate is:
a. Pine apple
b. Orange
c. Banana
d. Apricot
74. Organic compounds having fruitly smell are:
a. Alcohols
b. Carbocylic acids
c. Ethers
d. Ester
75. When CO2 is made to react with ethyl magnesium iodide followed by acid hydrolysis the product formed is:
a. Propanal
b. Propane
c. Propanol
d. Propanoic acid