The removal of top soil by water or wind is called
(a) Soil wash
(b) Soil erosion-✔️
(c) Soil creep
(d) Silting of soil
The power of lens is - 2D. What is its focal length?
(a) 2m
(b) 0.5m
(c) 1.0m
(d) 0.5m-✔️
The Panda belongs to the same family as that of [UPSC 2009(CS-P)]
(a) Bear-✔️
(b) Cat
(c) Dog
(d) Rabbit
The oxide of Nitrogen used in medicine as anaesthetic is
(a) Nitrogen dioxide
(b) Nitric oxide
(c) Nitrous oxide
(d) Nitrogen pentoxide-✔️
The modern synthetic theory of organic evolution is a synthesis of theories proposed by
(a) Lamarck and Darwin
(b) Lamarck and De Vries
(c) Darwin and De Vries-✔️
(d) None of the above
The marine animal called dugong which is vulnerable to extinction is a/an[UPSC 2009(CS-P)]
(a) Amphibian
(b) Bony fish
(c) Shark
(d) Mammal-✔️
The leaf blight of paddy is caused by
(a) Bacteria-✔️
(b) Virus
(c) Nematodes
(d) Fungus
The intencity of Earthquakes is measured on
(a) Richter scale-✔️
(b) Secant scale
(c) Mercalli scale
(d) Beaufort scale
The injection of anti-toxin is given to prevent
(a) Tetanus-✔️
(b) Tuberculosis
(c) Typhoid
(d) Filariasis
The hardest substance available on earth is
(a) Platinum-✔️
(b) Diamond
(c) Quartz
(d) gold
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