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
721
In computer binary code, what is the decimal value of '10'?
Answer:
2
In binary (base-2), the '1' is in the twos place and '0' is in the ones place. 1x2 + 0x1 = 2.
722
Which is the correct Roman Numeral for 9?
Answer:
IX
9 is one less than 10, so it is written as 'IX'.
723
What does 'ISBN' stand for (used for books)?
Answer:
International Standard Book Number
ISBN stands for International Standard Book Number, a unique numeric commercial book identifier.
724
Which Roman Numeral is invalid?
Answer:
VV
'VV' is invalid because 10 is represented by 'X', not two 5s.
725
In the NATO Phonetic Alphabet, 'Romeo' stands for which letter?
Answer:
R
'Romeo' represents the letter 'R'.
726
What is the Roman Numeral 'LX' converted to Arabic numerals?
Answer:
60
L (50) + X (10) = 60. Since the smaller number is after the larger one, you add them.
727
In Morse Code, what is the signal for the letter 'A'?
Answer:
.-
'A' is represented as '.-' (dot-dash).
728
What is the Roman Numeral for 19?
Answer:
XIX
10 (X) + 9 (IX) = 19 (XIX).
729
The Hexadecimal number system is Base-___?
Answer:
16
Hexadecimal is a base-16 system, using digits 0-9 and letters A-F.
730
Which Roman Numeral represents the number 400?
Answer:
CD
400 is written as 'CD' (100 before 500, so 500 - 100 = 400).