71. Which one of the following diseases in humans can spread through air?
(a) Dengue
(b) Tuberculosis
(c) HIV/AIDS
(d) Goitre
Answer:
(b) Tuberculosis
Explanation:
Tuberculosis (TB) is an airborne infectious disease caused by Mycobacterium tuberculosis that spreads when an infected person coughs or sneezes.
72. Sodium metal should be stored in
(a) Alcohol
(b) Kerosene Oil
(c) Water
(d) Hydrochloric acid
Answer:
(b) Kerosene Oil
Explanation:
Sodium is highly reactive with moisture and oxygen in the air, so it is stored submerged in kerosene oil to prevent violent reactions.
73. The SI unit of which of the following is named after Andre Marie Ampere ?
(a) Energy
(b) Electric Current
(c) Power
(d) Force
Answer:
(b) Electric Current
Explanation:
The “Ampere” is the standard SI unit used to measure electric current, named after the French physicist André-Marie Ampère.
74. Wild ass sanctuary lies in
(a) Odhisa
(b) Kachch
(c) Rajasthan
(d) Panna
Answer:
(b) Kachch
Explanation:
The Indian Wild Ass Sanctuary is located in the Little Rann of Kutch in the state of Gujarat.
75. Insects that can transmit diseases to humans are referred to as ?
(a) Carriers
(b) Reservoirs
(c) Vectors
(d) Incubators
Answer:
(c) Vectors
Explanation:
In epidemiology, a vector is an organism (such as an insect or tick) that transmits a disease or parasite from one animal or plant to another.
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