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1

AIPMT 2001

MCQ (Single Correct Answer)
Which of the following is correct?
A
Cycloheptane is an aromatic compound.
B
Diastase is an enzyme
C
Acetophenone is an ether.
D
All of these.

Explanation

Diastase is an enzyme. (The protein produced by living systems which acts as a biological catalyst). Enzymes are characterised by the name ending with -ase.
2

AIPMT 2000

MCQ (Single Correct Answer)
Which one is responsible for production of energy in bio-reaction?
A
Thyroxine
B
Adrenaline
C
Oestrogen
D
Progesterone

Explanation

It is a hormone secreted from thyroid gland. It controls various biochemical reactions involving burning of proteins, carbohydrates, fats to release energy.
3

AIPMT 2000

MCQ (Single Correct Answer)
Mg is present in
A
chlorophyll
B
haemoglobin
C
vitamin-D
D
vitamin-B

Explanation

Chlorophyll is an organometallic complex with Mg as central metal. It’s formula is C55H72MgN2O6.
4

AIPMT 2000

MCQ (Single Correct Answer)
$$\alpha $$ -$$D$$-glucose and $$\beta $$-$$D$$-glucose are
A
epimers
B
anomers
C
enantiomers
D
diastereomers

Explanation



Here 1st carbon atom becomes asymmetric giving two isomers which differ in the configuration of the asymmetric carbon. These two isomers are called as anomers.

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