Q31. Which is the tallest mountain in the world?
a) K2
b) Kangchenjunga
c) Mount Everest
d) Nanda Devi
Correct Answer: Mount Everest
Explanation: Mount Everest, located in the Himalayas, is the tallest mountain in the world with a height of 8,849 meters.
Q32. What is the boiling point of water?
a) 90°C
b) 95°C
c) 100°C
d) 110°C
Correct Answer: 100°C
Explanation: Water boils at 100°C at standard atmospheric pressure. This is when water turns into vapor.
Q33. Which organ in the human body pumps blood?
a) Brain
b) Heart
c) Lungs
d) Kidney
Correct Answer: Heart
Explanation: The heart is a muscular organ that pumps blood throughout the body, carrying oxygen and nutrients to the cells.
Q34. Which country is known as the “Land of the Rising Sun”?
a) China
b) Japan
c) India
d) Korea
Correct Answer: Japan
Explanation: Japan is called the Land of the Rising Sun because it lies to the east of Asia, where the sun rises first.
Q35. Who is known as the “Iron Man of India”?
a) Subhas Chandra Bose
b) Sardar Vallabhbhai Patel
c) B. R. Ambedkar
d) Jawaharlal Nehru
Correct Answer: Sardar Vallabhbhai Patel
Explanation: Sardar Vallabhbhai Patel is called the Iron Man of India for his leadership in uniting India after independence.
Q36. Which bird is the fastest in the world?
a) Sparrow
b) Crow
c) Falcon
d) Eagle
Correct Answer: Falcon
Explanation: The Peregrine Falcon is the fastest bird in the world, reaching speeds of more than 300 km/h during a dive.
Q37. What is the largest organ in the human body?
a) Heart
b) Brain
c) Liver
d) Skin
Correct Answer: Skin
Explanation: Skin is the largest organ of the human body. It protects us from germs, regulates temperature, and helps us feel sensations.
Q38. Which is the longest river in the world?
a) Nile
b) Amazon
c) Ganga
d) Mississippi
Correct Answer: Nile
Explanation: The Nile River in Africa is the longest river in the world, stretching about 6,650 kilometers.
Q39. Who discovered gravity?
a) Galileo Galilei
b) Albert Einstein
c) Isaac Newton
d) Thomas Edison
Correct Answer: Isaac Newton
Explanation: Sir Isaac Newton discovered gravity when he observed an apple falling from a tree and explained the force that pulls objects towards Earth.
Q40. Which festival is known as the “Festival of Lights”?
a) Holi
b) Diwali
c) Christmas
d) Eid
Correct Answer: Diwali
Explanation: Diwali is the festival of lights celebrated in India. People light lamps, burst crackers, and decorate homes to mark the victory of good over evil.
