Home › UPSC CSE › Geography › Physical Geography › About 98 per cent of the earth's crust is made u…
About 98 per cent of the earth's crust is made up of how many elements?
AEight
BFour
CNine
DTwelve
Answer & Solution
Correct answer: A. Eight
1. They include oxygen, silicon, aluminium and iron.
2. Eight elements make up 98 per cent.
3. The rest is titanium, hydrogen and others.
_Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 5, Minerals and Rocks._
Related questions
How many check-dams did Bhujpur villagers build in 1989?Bhujpur's check-dams were built on which river and its tributaries?Bhujpur, where villagers built check-dams in 1989, is in which region?Watering plants through narrow tubes delivering water at the base of the plant is:Bawris, now being revived, were traditional structures for:Using rainwater to recharge groundwater is called:Excessive rains cause floods, while absence of rain results in:Most Indian farmers depend on which source to irrigate crops?