16
18
12
14
Correct answer is B
168X, m8X
16 * (90/100) + m * (10/100) = 16.2
1440 + 10m = 1620
10m = 180
m = 18
The phenomenon observed when dust particles collide randomly in a beam of sunlight is known as? ...
What process would coal undergo to give coal gas, coal tar, ammoniacal liquor and coke? ...
The molecule which has the highest percentage of ionic character among the following is ...
In the laboratory preparation of oxygen, dried oxygen is usually collected over ...
Which of the following are made by the process of polymerization? ...