46. From which of the following energy cannot be generated?
(a) Water
(b) Fossil fuels
(c) Solar
(d) Vacuum
Answer:
(d) Vacuum
Explanation:
Water (hydroelectric), fossil fuels (thermal), and solar (photovoltaic) are all standard sources used to generate electricity. A vacuum is an empty space devoid of matter and cannot be used to generate energy.
47. Which among the following is a source of natural fiber?
(a) Terylene
(b) Bamboo
(c) Rayon
(d) Nylon
Answer:
(b) Bamboo
Explanation:
Bamboo yields a natural cellulose fiber that is mechanically or chemically extracted from the plant. Terylene and Nylon are synthetic, while Rayon is semi-synthetic.
48. The traditional embroidery ‘Gota’ has originated from which of the following?
(a) Punjab
(b) Rajasthan
(c) Himachal Pradesh
(d) Odisha
Answer:
(b) Rajasthan
Explanation:
Gota Patti or Gota work is a type of traditional Indian metal embroidery that originated in the culturally rich state of Rajasthan.
49. The festival ‘Baisakhi’ is celebrated in which of the following season?
(a) Summer
(b) Winter
(c) Autumn
(d) Spring
Answer:
(d) Spring
Explanation:
Baisakhi is a prominent historical and religious festival in Sikhism and Hinduism, celebrated annually in mid-April, marking the traditional solar New Year and the spring harvest season.
50. Our planet ‘Earth’ is also known by the following name.
(a) Green Planet
(b) White Planet
(c) Blue Planet
(d) Brown Planet
Answer:
(c) Blue Planet
Explanation:
Earth is affectionately referred to as the “Blue Planet” because roughly 71% of its surface is covered by vast oceans of liquid water, making it appear vividly blue from outer space.
