Current Affairs

GK MCQs Section
Q. Consider the following statements:
  1. The main mineral constituents of the continental mass are silica and magnesium.
  2. The oceanic crust mainly consists of silica and alumina.
Which of the above is / are correct?
Answer: Neither 1 nor 2
Notes: The main mineral constituents of the continental mass are silica and alumina. It is thus called sial (si-silica and al-alumina). The oceanic crust mainly consists of silica and magnesium; it is therefore called sima (si-silica and ma-magnesium).
Question Source: 📚This question has been sourced from GKToday's Target UPSC Prelims for 2026, 2027 & 2028 App Exclusive Course in GKToday Android Application which provides more than 12K Topicwise UPSC Prelims General Studies questions with explanations framed on UPSC pattern. Download the app here.
📌 Question Number: 45 in 45: Earth Structure and Geology in the above course in App.