Air quality depicting PM- 2.5 is more hazardous to (1) Archaeological Monuments (2) National Parks (3) Botanical Gardens (4) Old Men and Women Answer : Old Men and Women...
Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible for such rejections ? (1) Cell - mediated immune response (2) Hormonal immune response (3) Physiological immune response (4) Autoimmune response Answer : (1) Cell - mediated immune response...
In the human body, which of the following organs is responsible for water balance ? (1) Heart (2) Liver (3) Kidneys (4) Lungs Answer : Kidneys...
A motor bike tyre has two punctures. The 1st puncture alone would have made the tyre flat in 27 minutes and the 2nd alone would have done it in 18 minutes. If air leaks out at a constant rate, how long does it take ... flat? a) 20 4/3 minutes b) 15 4/7 minutes c) 10 4/5 minutes d) 25 4/3 minutes Answer : C 1st puncture made the tyre flat in 27 mins 2nd puncture made the tyre flat in 18 mins 1 minute’s work of both the punctures = (1/27 + 1/18) =(2+3)/54 =5/54 So, both the punctures will make the tyre flat in 54/5 mins =>10 4/5 minutes...
Flat tyre causes maximum damage at a speed of (a) 90 to 100 kmph (b) 25 to 30 kmph* (c) 10 to 15 kmph (d) 15 to 20 kmph Answer : (b) 25 to 30 kmph*...
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