4046: Phenylketonuria is an example of an in born error of metabolism. This error refers to
(a) hormonal overproduction
(b) atrophy of endocrine glands
(c) inherited lack of an enzyme
(d) non-disjunction
4047: The medicines which are used to treat diseases caused by allergy are known as
(a) Analgesics
(b) Antihistamines
(c) Antipyretics
(d) Allergens
4048: There is a Parliamentary System of Government in India because the
(a) Lok Sabha is elected directly by the people
(b) Parliament can amend the Constitution
(c) Rajya Sabha cannot be dissolved
(d) Council of Ministers is responsible to the Lok Sabha
4049: 1. There are 5 bus stops A, B, C, D and E at equal intervals,
2. C is not the middle stop,
3. A and E are not terminal stops,
4. C comes twice as many stops before D in upward journey as B comes after A,
5. D is the first stop in downward journey,
Give the correct sequence of the stops in downward journey.
(a) DEACB
(b) DAECB
(c) DACEB
(d) DCBAE
4050: Consider the following statements :
At the present level of technology available in India, solar energy can be conveniently used to
I. supply hot water to residential buildings.
II. supply water for minor irrigation projects.
III. provide street lighting.
IV. electrify a cluster of villages and small towns.
Of these statements
(a) I, II, III and IV are correct.
(b) II and IV are correct
(c) I and III are correct
(d) I, II and III are correct