76. In early days, the medicine for malaria was made from powdered bark of _______.
(A) Cinchona tree
(B) Jamun tree
(C) Neem tree
(D) Tulsi plant
Answer:
(A) Cinchona tree
Explanation:
Historically, the bark of the Cinchona tree was ground into a powder to extract quinine, an alkaloid compound that was the first effective treatment for malaria.
77. The young ones of mosquitoes are called _______.
(A) baby
(B) caterpillar
(C) larvae
(D) tadpole
Answer:
(C) larvae
Explanation:
After mosquito eggs hatch in water, they enter the active, worm-like aquatic stage of their life cycle, during which they are scientifically referred to as larvae.
78. Mosquitoes lay eggs in _______.
(A) River water
(B) Running water
(C) Salt Water
(D) Stagnant water
Answer:
(D) Stagnant water
Explanation:
Mosquitoes specifically seek out still, unmoving (stagnant) water sources—such as puddles, discarded tires, and blocked drains—to lay their eggs safely without them washing away.
79. Al-Biruni came from _______.
(A) Iran
(B) Pakistan
(C) Tajikistan
(D) Uzbekistan
Answer:
(D) Uzbekistan
Explanation:
Al-Biruni was a famous 11th-century Islamic scholar and polymath who travelled to India. He originally hailed from Khwarazm, a region corresponding to modern-day Uzbekistan.
80. Pashmina shawl is made from _______.
(A) camel
(B) dog
(C) mountain goat
(D) sheep
Answer:
(C) mountain goat
Explanation:
Authentic Pashmina shawls, famously woven in Kashmir, are made from the exceptionally fine and warm undercoat fibers shed by the Changthangi mountain goat found in the high Himalayas.
