Mashaal Masha
Mashaal Masha
 Nov 05, 2022
0
Choose the correct options for the following questions.
In which of these processes are small organic molecules made into macromolecules?
Difficulty: Easy
A:
The cracking of petroleum fractions.
B:
The fractional distillation of crude oil.
C:
The polymerization of ethane.
D:
The hydrolysis of proteins.
Which of these polymers is an addition polymer?
Difficulty: Easy
A:
Nylon 6,6
B:
Polystyrene
C:
Terylene
D:
Epoxy resin
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Which of these polymers is a synthetic polymer?
Difficulty: Easy
A:
Animal fat
B:
Strach
C:
Cellulose
D:
Polyester
Plastics are a pollution problem because many plastics:
Difficulty: Easy
A:
Are made from petroleum
B:
Are very inflammable
C:
Burn to produce toxic fumes
D:
Decompose to produce toxic products.
The fibre which is made from acrylonitrile as monomer:
Difficulty: Easy
A:
PVC
B:
Rayon fibre
C:
Acrylic fibre
D:
Polyester fibre
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A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a:
Difficulty: Easy
A:
Fibre
B:
Plastic
C:
Varnish
D:
Polyamide resin
Vegetable oils are:
Difficulty: Easy
A:
Unsaturated fatty acids
B:
Glycerides of unsaturated fatty acids
C:
Essential oils obtained from plants
D:
Saturated fatty acids
Which one of the following elements is not present in all proteins?
Difficulty: Easy
A:
Carbon
B:
Hydrogen
C:
Nitrogen
D:
Sulphur
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Which one of the following is a water soluble vitamin?
Difficulty: Easy
A:
Nacin
B:
Riboflavin
C:
Trypsin
D:
Ascorbic acid
Which one of the following enzymes brings about the hydrolysis of fats?
Difficulty: Easy
A:
Urease
B:
Maltase
C:
Zymase
D:
Lipase

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