237: Rigveda, the oldest of the Vedas, chiefly contains:
(a) Collection of hymns to gods
(b) Methods of Vedic yagnas
(c) Early Aryan culture
(d) Origin and works of Hindu gods
238: What is the correct sequence of the following in a heart attack ?
I. Narrowing of the inner orifice of the vessel
II. Plaque from fibrous tissue and high cholesterol
III. Inadequate supply of blood and oxygen
IV. Clots of blood carried into the coronary arteries.
Choose the answer from the codes given below :
Codes:
(a) I, II, III, IV
(b) II, IV, I, III
(c) II, III, I, IV
(d) IV, II, I, III