1856: The average salary of skilled employees in a firm is Rs. 520 and that of the unskilled employees is Rs. 420. If the average salary of both the groups of employees is Rs. 500, then the percentage of skilled employees in the firm is

(a) 50

(b) 20

(c) 80

(d) 70
1857: Consider the following statements about Madam Bhikaji Cama :

1. Madam Cama unfurled the National Flag at the international Socialist Conference in Paris in the year 1907.

2. Madam Cama served as private secretary to Dadabhai Naoroji.

3. Madam Cama was born to Parsi parents.

Which of the statements given above is/are correct?

(a) 1 and 2, only
(b) 2 and 3, only
(c) 3 only
(d) 1, 2 and 3
1858: The surface area of a cube is 216 sq.m. What is its volume ?

(a) 100 cu m

(b) 216 cu m

(c) 480 cu m

(d) 512 cu m
1859: About 50% of the world population is concentrated between the latitudes of

(a) 5°N and 20°N
(b) 20°N and 40°N
(c) 40°N and 60°N
(d) 20°S and 40°S
1860: Sun's halo is produced by the refraction of light in

(a) Water vapour, in Stratus clouds

(b) Ice crystals in Cirro-Cumulus clouds

(c) Ice crystals in Cirrus clouds

(d) Dust particles in Stratus clouds