46: A point is selected at random inside a rectangle and perpendiculars are drawn on each side from the point. The sum of these perpendiculars is 24 cm. If the length of the rectangle is 3 times the width, the perimeter of the rectangle will be
(a) 36 cm
(b) 42 cm
(c) 24 cm
(d) 48 cm
47: Consider the following statements :
Glass can be etched or scratched by
I. diamond.
II. hydrofluoric acid.
III. aquaregia.
IV. cone, sulphuric acid.
Which of these statements are correct ?
(a) I and IV
(b) II and III
(c) I and II
(d) II and IV
48: The minimum possible temperature beyond which matter cannot be cooled is
(a) -98.10° C
(b) -100.00° C
(c) -273.15° C
(d) -459.40° C
49: Two ladies simultaneously leave cities A and B connected by a straight road and travel towards each other. The first lady travels 2 km/hr faster than the second lady and reaches B one hour before the second lady reaches A. The two cities A and B are 24 km apart. How many kilometers does each lady travel in one hour?
(a) 5 km, 3 km
(b) 7 km, 5 km
(c) 8 km, 6 km
(d) 16 km, 14 km
50: Consider the following statements:
1. In India, State Governments do not have the power to auction non-coal mines.
2. Andhra Pradesh and Jharkhand do not have gold mines.
3. Rajasthan has iron ore mines.
Which of the statements given above is/are correct?
(a) 1 and 2
(b) 2 only
(c) 1 and 3
(d) 3 only