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ECAT Chemistry Chapter 25 Macromolecules Online Test MCQs With Answers
Question # 1
Ascorbic acid is a chemical name of
Choose an answer
Vitamin D
Vitamin A
Vitamin C
Vitamin B
6
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Question # 2
In macromolecules DP stands for
Choose an answer
Dissociation parameter
Dissociation polymer
Degree of polymerization
None of these
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Question # 3
The protein which only yield amino acids and their derivatives
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Simple proteins
Complex proteins
Derived protein
All of these
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Question # 4
Activity of the enzyme is reduced by
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Temperature
Concentration
pH
Inhibitors
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Question # 5
DNA is a polynucleic acid. The monomer is known as a nucleotide. What is not the component of the nucleoptide
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Phosphate group
Deoxy ribose sugar
Uracil base
Adenine base
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Question # 6
The degree of unsaturation in fats or oils is usually measured by numbers of grams of iodine required by 100 grmas of fat, this is called
Choose an answer
Oil number
Saturation number
Iodine number
Un saturation number
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Question # 7
The substance upon which an enzyme acts is known as its
Choose an answer
Domain
Field
Substrate
Reactant
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Question # 8
Which is a protein?
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Nylon
Rayon
Natural silk
Terylene
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Question # 9
Which of the following is not an example of addition polymer?
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Polyethene
Polystyrene
Neoprene
Terylene
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Question # 10
Which of the following is the repeating monomeric unit in cellulose
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Sucrose
Maltose
Cellobiose
Glucose
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Question # 11
At what pH glycine shows the structure H
3N
+
-- CH
2
-- COOH
Choose an answer
2
7
10
14
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Question # 12
C
6
H
12
O
6
is molecualr formula of:
Choose an answer
Glucose
Dextrose
Fructose
All of these
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Question # 13
Violet colour is obtained when dilute CuSO
4
is added in alkaline solution of protein. This test is known as
Choose an answer
Biuret
Xanthoproteic test
Hopkins-cole
All of these
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Question # 14
How is the secondary structure of protein stabilized
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Through hydrogen bonding
Through ionic bonding
Through van der wall forces
Through covalent bonding
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Question # 15
Which one is a polymer compound?
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SO
2
CO
2
CH
4
PVC
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Question # 16
There are 20 amino acids found in protein which is not the property of these amino acids
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They are all
α
-amino acids
They are all optically active
They have high decomposition point
They are water soluble
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Question # 17
Which of the following statements is incorrect about vitamins
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Often function as coenzymes
Molecules contain at least one ring structure
Are often synthesized by the body
Are polyfunctional compounds
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Question # 18
Which carbohydrates is an essential constituent of plant cells?
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Starch
Cellulose
Sucrose
Vitamins
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Question # 19
The reaction between fat and NaOH is called
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Esterification
Hydrogenolysis
Fermentation
Saponification
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Question # 20
The fiber which is made from acrylonitrile as monomer:
Choose an answer
PVC
Rayon Fiber
Acrylic fiber
Polyester fiber
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Question # 21
Soft drinks and baby feeding bottles are generally made up of
Choose an answer
Polyester
Polyurethane
Polyurea
Polystyrene
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Question # 22
Which teat is not given by both glucose and fructose
Choose an answer
Give yellow ppt of CHl
3
with alkaline aqueous iodine
With 2, 4-DNPH give yellow ppt of hydrazone
Evolve H
2
gas with Na metal
Oxidised with [Ag(NH
3
)
2
]
+
i.e. Tollen's reagent
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Question # 23
Copolymer is
Choose an answer
Nylon-6
Nylon 66
PMMA
Polyethene
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Question # 24
The clotting time of blood is increased due to the deficiency of
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Vitamin A
Vitamin K
Vitamin D
Vitamin C
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Question # 25
Which of the following has ester linkage?
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Nylon
Bakelite
Terylene
PVC
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Question # 26
Which of the following is a polyamide?
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Nylon
Orlon
Teflon
Terylene
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Question # 27
A nucleoside may be
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Ribonuleoside
Deoxyribonucleoside
Both a and b
None
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Question # 28
The simplest separating unit of a polymer is called:
Choose an answer
Monomer
Dimer
Trimmer
Macromer
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Question # 29
Factors affecting denaturation of proteins:
Choose an answer
Change in temp and pH
Strong reducing agent
Strong oxidizing agent
All of these
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Question # 30
Which one of the following is a water soluble vitamin
Choose an answer
Niacin
Riboflavin
Tyrosine
Ascorbic acid
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