The amount of water present in blood plasma is
(a) 60%
(b) 70%
(c) 80%
(d) 90%

Q. The rate of heart beat per minute in a normal man is
(a) 60-70
(b) 70-80
(c) 80-90
(d) 90-100

Q. The amount of water present in blood plasma is

Q.

Find the value of $\angle$x in the following figure.

Q. Measure the $\angle DAB$ of the rectangle ABCD.

Q. In the given figure, the measure of ∠B'A'C' is

(a) 50°

(b) 60°

(c) 70°

(d) 80°