31. When – COOH is attached directly to the benzene ring the acid is called
A. Aliphatic
B. Alicyclic
C. Carboxylic
D. Aromatic
✅ The correct answer is option D.
Chemistry
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32. A common example of carbohydrates are
A. Cellulose glycogen galactose
B. Glyceraldehydes glucose peptone
C. Glycerol phospholipids collagen
D. Legumin amylopectin albumin
✅ The correct answer is option A.
33. The common name of propane 1 3-dioic is
A. Oxalic acid
B. Aromatic acid
C. Malonic acid
D. Fumaric acid
✅ The correct answer is option C.
34. Nylon is obtained by heating
A. Acrylic acid
B. Epichlorohydrin
C. Vinyl chloride
D. Adipic acid with hexamethylene diamine
✅ The correct answer is option D.
35. The common thing in phthalic acid and oxalic acid is that both are
A. Aromatic
B. Dicarboxylic
C. Hydrocarbons
D. Strong acids
✅ The correct answer is option B.
36. Hydrolysis of an oligosaccharide in the presence of acid yields
A. One monosaccharide unit
B. No monosaccharide unit
C. 2-9 monosaccharide unit
D. many monosaccharides
✅ The correct answer is option C.
37. The irritation caused by red ants bite is due to
A. Lactic acid
B. Formic acid
C. Uric acid
D. Acetic acid
✅ The correct answer is option B.
38. Amylose is
A. Soluble in water
B. Insoluble in water
C. Soluble in alcohol
D. Partially soluble in alcohol
✅ The correct answer is option A.
39. The acid which is used as ink remover is
A. Oxalic acid
B. Succinic acid
C. Adipic acid
D. Acetic acid
✅ The correct answer is option A.
40. Isotopes differs in
A. arrangement of electrons in orbitals
B. position in the periodic table
C. properties depend upon mass
D. chemical properties
✅ The correct answer is option D.