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761. What is the correct sequence of the following in a heart attack ? 1. Narrowing of the inner orifice of the vessel 2. Plaque from fibrous tissue and high cholesterol 3. Inadequate supply of blood and oxygen 4. Clots of blood carried into the coronary arteries
A. 1, 2, 3, 4
B. 2, 4, 1, 3
C. 2, 3, 1, 4
D. 4, 2, 1, 3
Explanation:
762. During the fermentation of sugars, the enzyme which converts glucose into ethyl alcohol is :
A. invertase
B. diastase
C. zymase
D. maltase
Explanation:
763. The steam engine was invented by
A. James Watt
B. James Prescott Joule
C. Newcommen
D. Isaac Newton
Explanation:
764. What makes a lemon sour ?
A. Tartaric acid
B. Hydrochloric acid
C. Citric acid
D. Acetic acid
Explanation:
765. The ratio of pure gold in 18 carat gold is :
A. 60%
B. 75%
C. 80%
D. 100%
Explanation: