1551: Pulse reading is done by doctors to find out:
(a) Temperature
(b) Heart beat
(c) Blood pressure
(d) Respiration rate
1552: In binary system, 1010 is equivalent to
(a) 8
(b) 9
(c) 10
(d) 11
1553: The national income of a country in a given period is equal to the
(a) total value of goods and services produced by the nationals
(b) sum of total consumption and investment expenditure
(c) sum of personal income of all individuals
(d) money value of final goods and services produced
1554: Consider the following statements:
1. During the process of osmosis, the solvent travels from concentrated solution to the diluted solution.
2. In the reverse osmosis, external pressure is applied to the dilute solution.
Which of the following statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
1555: The age of a father is twice that of the elder son. Ten years hence the age of the father will be three times that of the younger son. If the difference of ages of the two sons is 15 years, the age of the father is
(a) 100 years
(b) 70 years
(c) 60 years
(d) 50 years