41
Which one of the following vitamins is essential for coagulation of blood?
A)
Vitamin-A
B)
Vitamin-B12
C)
Vitamin-K
D)
Vitamin-D
Answer & Solution
Answer: Option
C
42
Methyl propane is an isomer of
A)
n-hexane
B)
n-butane
C)
n-propane
D)
n-pentane
Answer & Solution
Answer: Option
B
43
Non-stick frying pans are coated with
A)
Orlon
B)
Teflon
C)
Polystyrene
D)
Polypropylene
Answer & Solution
Answer: Option
B
44
Match
List I with
List II .
List-I (Item) List-II (Toxic Substance)
a. CFL Lamp
1. Nitrogen oxide
b. Automobile battery
2. Phthalates
c. Polymer
3. Lead
d. Diesel engine
4. Mercury
A)
a-4, b-3, c-2, d-1
B)
a-3, b-2, c-1, d-4
C)
a-2, b-1, c-4, d-3
D)
a-2, b-3, c-1, d-4
Answer & Solution
Answer: Option
A
45
. . . . . . . . polymer is used in making floor tiles.
A)
Polyvinyl chloride
B)
Carbonyl
C)
Teflon
D)
Nylon
Answer & Solution
Answer: Option
A
46
Chemical name of vitamin-A is
A)
thiamine
B)
axerophthol (retinol)
C)
ascorbic acid
D)
nicothamide
Answer & Solution
Answer: Option
B
47
Which one of the following acids is also known as Vitamin-C?
A)
Methanoic acid
B)
Ascorbic acid
C)
Lactic acid
D)
Tartaric acid
Answer & Solution
Answer: Option
B
48
Assertion (A) Natural rubber has poor elasticity.Reason (R) It has almost no cross linkages.
A)
Both A and R are true and R is the correct explanation of A
B)
Both A and R are true, but R is not the correct explanation of A
C)
A is true, but R is false
D)
A is false, but R is true
Answer & Solution
Answer: Option
A
49
Which one of the following enzymes is used to digest gelatine in the process of recovering silver from the photographic film?
A)
Amylase
B)
Pepsin
C)
Lipase
D)
None of these
Answer & Solution
Answer: Option
B
50
Which of the following is used in plastics?
A)
Butane
B)
Ethylene
C)
Krypton
D)
Ammonia
Answer & Solution
Answer: Option
B
