Question

1.During the dissolution of urea, heat

(a) is absorbed (b) is evolved (c) does not change (d) none of these

2.The device used to hear the heart beat is

(a) microscope (b) telescope (c) sphygmomanometer (d) stethoscope​

Answer 1

Answer:

1. is absorbed
2. stethoscope

Answer 2

Explanation:

1. is absorbed

2. Stethoscope