161. On a night when the sky is clear, the temperature may dip considerably; on a cloudy night the temperature will usually dip much less. The reason for this difference is that

A. the clear sky allows radiant energy to escape readily from the earth
B. on a cloudy night the clouds are warm and therefore retard the cooling
C. the clear sky allows the cold of outer space to reach the earth
D. current of air carry the heat away from the earth on a clear night
✅ The correct answer is option A.
On a night when the sky is clear, the temperature may dip considerably; on a cloudy night the temperature will usually dip much less. The reason for this difference is that the clear sky allows radiant energy to escape readily from the earth.

162. Lal Bahadur Shastri

A. succeeded Pandit Nehru as the second Prime Minister of India
B. signed the Tashkent Agreement with Ayub Khan for a ceasefire between India and Pakistan
C. is also known as “Man of Peace”
D. All of the above
✅ The correct answer is option D.
Lal Bahadur Shastri succeeded Pandit Nehru as the second Prime Minister of India and signed the Tashkent Agreement with Ayub Khan for a ceasefire between India and Pakistan and is also known as “Man of Peace”.

163. The parts of the Mahabharata which include Bhagawad Gita, is

A. more than 100 years old
B. more than 2500 years old
C. more than 1500 years old
D. None of the above
✅ The correct answer is option B.
The parts of the Mahabharata which include Bhagawad Gita, is more than 2500 years old. Kurukshetra is a city in the Indian state of Haryana. It is also known as Dharmakshetra (“Holy Place”) and as the “Land of the Bhagavad Gita”.

164. INS Agrani (Petty Officers’ School) is situated at

A. Lonavla
B. Coimbatore
C. Mumbai
D. Jamnagar
✅ The correct answer is option B.
INS Agrani (Petty Officers’ School) is situated at Coimbatore. Indian Naval Station Agrani is a leadership training establishment of the Indian Navy, it comes under the Eastern Naval Command and conducts courses for middle level sailors. This station was commissioned in 1965.

165. Exposure to sunlight helps a person improve his health because

A. resistance power increases
B. the infrared light kills bacteria in the body
C. the ultraviolet rays convert skin oil into Vitamin D
D. the pigment cells in the skin get stimulated and produce a healthy tan
✅ The correct answer is option C.
Exposure to sunlight helps a person improve his health because the ultraviolet rays convert skin oil into Vitamin D.

167. The dance in Himachal Pradesh, performed indoor, solo or duet, especially when life comes to a standstill during cold winter is

A. Rouf
B. Munzra
C. Giddha parhaun
D. Luddi dance
✅ The correct answer is option B.
The dance in Himachal Pradesh, performed indoor, solo or duet, especially when life comes to a standstill during cold winter is Munzra. The Himachal is known to be the Dev Bhoomi.There are various traditional dance forms of Himachal Pradesh for each and every occasion.

168. The three abundant elements in the earth’s crust are aluminium, oxygen and silicon. The correct order of their abundance is

A. oxygen, aluminium, silicon
B. aluminium, silicon, oxygen
C. oxygen, silicon, aluminium
D. silicon, oxygen, aluminium
✅ The correct answer is option C.
The three abundant elements in the earth’s crust are oxygen, silicon, aluminium. The mass-abundance of the nine most abundant elements in the Earth’s crust is approximately: oxygen 46%, silicon 28%, aluminum 8.3%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium 2.0%, and titanium 0.61%. Other elements occur at less than 0.15%.

169. If the plane of the earth’s equator were not inclined to the plane of the earth’s orbit

A. the year would be longer
B. the winters would be longer
C. the summers would be warmer
D. there would be no change of seasons
✅ The correct answer is option D.
If the plane of the earth’s equator were not inclined to the plane of the earth’s orbit there would be no change of seasons. When tilted, the hemisphere closer to the sun would experience summer, while the hemisphere that is relatively farther away would experience winter. If the earth were not tilted, the whole planet would be relatively equidistant from the sun, and hence, no seasons.

170. The headquarter of Asian Development Bank is located in which of the following cities

A. Jakarta
B. Singapore
C. Bangkok
D. Manila
✅ The correct answer is option D.
The headquarter of Asian Development Bank is located in Manila. The headquarters of the bank is at 6 ADB Avenue, Mandaluyong, Metro Manila, Philippines, and it has 31 field offices in Asia and the Pacific and representative offices in Washington, Frankfurt, Tokyo and Sydney.