NTSE Subject-Specific Knowledge — Questions and Answers
Question 1: What is the chemical symbol for Sodium?
- Na (Correct answer)
- So
- Sd
- Sn
Correct answer: Na
The chemical symbol for Sodium is Na. This symbol is derived from its Latin name, Natrium. In chemistry, elements are represented by unique one or two-letter symbols, often based on their historical or Latin names, to provide a universal shorthand.
Question 2: Who wrote the play 'Romeo and Juliet'?
- William Shakespeare (Correct answer)
- Charles Dickens
- Jane Austen
- Mark Twain
Correct answer: William Shakespeare
'Romeo and Juliet' is one of the most famous tragedies written by the renowned English playwright William Shakespeare. His works are cornerstones of English literature, celebrated for their profound themes, poetic language, and enduring impact on theatre and culture worldwide.
Question 3: What is the capital city of France?
- Paris (Correct answer)
- London
- Rome
- Berlin
Correct answer: Paris
Paris is the capital and most populous city of France, located on the River Seine. It is globally recognized as a major center for art, fashion, gastronomy, and culture. The city is famous for its iconic landmarks such as the Eiffel Tower, the Louvre Museum, and Notre-Dame Cathedral.
Question 4: Which planet is known as the Red Planet?
- Mars (Correct answer)
- Venus
- Jupiter
- Saturn
Correct answer: Mars
Mars is famously known as the Red Planet due to the significant presence of iron oxide, commonly known as rust, on its surface. This iron oxide gives the planet its distinctive reddish-orange hue, which is easily observable from Earth. This characteristic color has been a defining feature of Mars for centuries.
Question 5: Which mathematical theorem is used to calculate the length of a side in a right triangle?
- Pythagorean Theorem (Correct answer)
- Fermat's Theorem
- Binomial Theorem
- Euler's Formula
Correct answer: Pythagorean Theorem
The Pythagorean Theorem is a fundamental principle in geometry that specifically applies to right-angled triangles. It states that the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides (a² + b² = c²). This theorem is precisely what is used to calculate an unknown side length when the other two are known.
Question 6: Which of the following is an example of a renewable energy source?
- Solar Energy (Correct answer)
- Coal
- Natural Gas
- Petroleum
Correct answer: Solar Energy
Solar energy is classified as a renewable energy source because it harnesses power from the sun, which is an inexhaustible resource on a human timescale. Unlike fossil fuels such as coal, natural gas, and petroleum, solar energy replenishes naturally and does not deplete Earth's finite resources. This makes it a sustainable alternative for power generation.
NTSE Subject-Specific Knowledge
What is the chemical symbol for Sodium?