General Knowledge MCQs
Topic Notes: General Knowledge
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
41
What is the primary mineral used to make glass?
Answer:
Silica Sand (Quartz)
Silica sand, composed mostly of quartz (silicon dioxide), is the main ingredient in glass production.
42
Which country produces the most Natural Rubber?
Answer:
Thailand
Thailand is the world's largest producer of natural rubber, derived from the latex of the Hevea brasiliensis tree.
43
Methane Hydrate, found deep underwater or in permafrost, is often called:
Answer:
Fire Ice
Methane hydrate is a crystalline solid consisting of methane molecules trapped in a cage of water ice. It can be lit on fire while it melts, hence 'Fire Ice'.
44
Which country produces the most Cocoa beans, the raw ingredient for chocolate?
Answer:
Ivory Coast (Côte d'Ivoire)
The Ivory Coast is the world's leading producer of cocoa, supplying nearly 40% of the global market.
45
Cinnabar is the bright red ore of which liquid metal?
Answer:
Mercury
Cinnabar (Mercury sulfide) is the primary ore from which elemental mercury (quicksilver) is extracted.
46
Which metal is used to 'galvanize' steel to prevent rusting?
Answer:
Zinc
Zinc is used in the galvanization process to create a protective coating on steel or iron to prevent corrosion.
47
Which country controls the largest share of the world's Phosphate reserves, essential for fertilizers?
Answer:
Morocco
Morocco (including the disputed Western Sahara territory) holds approximately 70-75% of the world's proven phosphate reserves.
48
Galena is the primary ore for which metal?
Answer:
Lead
Galena (Lead sulfide) is the most important ore of lead and an important source of silver.
49
Which country is the top producer of Coffee beans?
Answer:
Brazil
Brazil has been the world's largest coffee producer for over 150 years, known particularly for its Arabica beans.
50
Which country is the world's largest producer of Palm Oil?
Answer:
Indonesia
Indonesia is the leading producer of palm oil, followed by Malaysia. Together, they account for the vast majority of global supply.