Q: Arrange the following major elements present in the Earth's crust, in ascending order, in weight percentage: 1. Aluminium 2. Calcium 3. Silicon 4. Oxygen Select the answer using the code given below:
(a)3, 4, 1, 2
(b)4, 3, 1, 2
(c)2, 1, 3, 4
(d)1, 2, 3, 4
Correct Answer: (c)