12th class (Fsc) Chemistry unit 14 MCQs
101. Terylene, a polyester is an example of:
a. Lipids
b. Biopolymer
c. Addition polymer
d. Condensation polymer
102. The principle energy storage carbohydrate in animals is:
a. Starch
b. Glucose
c. Glycogen
d. Protein
103. Adipic acid and hexamethyllene diamine both of which have:
a. Eight
b. Seven
c. Four
d. Six
104. Lactose is a sugar present in milk. It is an example of:
a. Monosaccharides
b. Disaccharides
c. Starch
d. Polysaccharides
105. Macromolecules are described as large molecule built up from small repeating units called:
a. Isomers
b. Monomers
c. Tautomers
d. Metamers
106. Polyvinyl acetate is colorless and non-toxic resine used as an adhesive and as a binder for making:
a. Gramophone recorders
b. Toys
c. Emulsion pains
d. Compact discs
107. Both ribose and deoxyribose are monosaccharides containing …… carbon atoms.
a. Six
b. Four
c. Seven
d. Five
108. The increased quantities of cholesterol in blood make plaque like deposite in the arteries causing:
a. Down’s syndrome
b. Cholera
c. Phenlketonuria
d. Heart attack
109. Collange is a fibrous protein present most abundantly in:
a. Nail
b. Hair
c. Arteries
d. Tendons
110. Animals store glucose in the form of glycogen in:
a. Mouth
b. Stomach
c. Small intestine
d. Liner and muscles
111. Which one of the following is an example of condensation polymer?
a. Polystyrene
b. Polyvinychloride
c. Polyamide
d. Polyethene
112. Among the most common disaccharides, which one of the following is prenent in the milk?
a. Maltose
b. Sucrose
c. Lactose
d. Fructose
113. Which one of the following base is NOT present in RNA?
a. Adenine
b. Cytosine
c. Guanine
d. Thymine
114. Collagen proteins are present in …… throughout the body:
a. Red blood cells
b. Muscle
c. Blood plasma
d. Tendons
115. The specific substance …… that fits on the enzyme surface and is converted to products is called:
a. Prosthetic group
b. Co-factor
c. Substrate
d. Isoenzyme
116. Polymide is formed due to condensation of hexane-dioic acid with:
a. Hexane-1,6- diamine
b. Hexane- 1,5.diamine
c. None of these
d. Hexane-1,4- diamine
117. Hemoglobin is a:
a. Building protein
b. Genetic protein
c. Structural protein
d. Transport protein
118. Out of these which nitrogen base is not present in DNA?
a. Guanine
b. Adenine
c. Thymine
d. Thymine
119. Which of the following is polymer is an exact composition of a carbohydrated?
a. Carbon and oxygen
b. Carbon and hydrogen
c. Hydrogen and oxygen
d. Carbon,hydrogen and oxygen
120. In the woody parts of trees, the %age of cellulose is:
a. 10%
b. 50%
c. 100%
d. 30%
121. In laboratory experiment an unknow compound was added in test tube containing iodine. the colour became intense blue, What could be the unknow compound?
a. Raffinose
b. Cellulose
c. Starch
d. Ribose
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