Kerala PSC Degree Level Questions.
SI unit of pressure is - Pascal
2. The satellite used for weather map telecasting is orbitting at a height of?
36000 km ( correctly 35800 km) (communication satellites)
3. Which type of bombs affects only living beings and not the buildings? Neutron Bomb.
(Enhanced Radiation Weapon (ERW), maximize lethal neutron radiation)
4. If a refrigerator in working condition is kept in a room then the room temperature will? Increases
5. Hooke's law is related with ? Elasticity
6. A clock goes slow in summer because the length of the pendulum ...... ? Increases thereby time period increases
7. The escape velocity from the earth surface is? 11.2 km / s
(The moon's escape velocity is about 2.38 km/s)
8. The normal temperature of human body on the Kelvin scale is? 310K
(Or 37°C or 98.6°F)
9. If you walk towards a plane mirror at a speed of 5 metre per second at what speed does your image approach you? 5 m / s
10. Hydrogen bomb involves the principle of ....? Nuclear Fusion
(Atom bomb is based on the principle of nuclear fission)
11. Which part of the camera acts as the retina of eye? Film
12. What is the function of a thermostat?
To keep the temperature of a system constant
13. Lift of Aeroplane involves which principle ? Bernoulli's Principle
14. Fuse wire is made of? Lead-Tin alloy
15. Why do rain bearing clouds look black? The large number of water droplets absorb all the sunlight
16. What was the name given to the first nuclear experiment in the world? Trinity
[In July, 1945, in the desert near New Mexico, the first nuclear test took place, code-named - Trinity, using, "the world’s first nuclear device, the “Gadget,” was successfully detonated in the New Mexico desert.]
[1945, Aug 6, Hiroshima bombing - Little Boy]
[1945, Aug 9, Nagasaki bombing - Fat Man]
17. Which element is the most abundant element in the solar system? Hydrogen.
(The second most abundant is Helium.)
18. Ornithophily is the pollination through? Birds
(Ornithology - scientific study of birds.)
□Thattekkad Bird Sanctuary is named after the famous Ornithologist Salim Ali.
19. The depth of a pond appears to be less because of? Refraction
(eg: A rod placed in water appears to be bent, An object placed under water appears to be raised, twinkling of stars, Mirage)
20. The function of a fuse wire in a circuit is? Prevent the excessive flow of current
21. Which atmospheric layer is responsible for the reflection of radio waves? Ionosphere
(Tropo, Strato, Mesosphere, Ionosphere & Exosphere)
*Stratosphere contains ozone layer
22. Sudden fall of atmospheric pressure indicates? Storm
23. The minimum length of a plane mirror in which a person can see himself in full length should be? Nearly half of his height.
24. The Light having wavelength higher than that of red light is called? Infrared
(The Light having wavelength shorter than violet is? Ultraviolet)
25. Why do the sun and the sky turn red during sunrise and sunset? due to scattering of light.
The sky is blue, the sea is blue, red- sunrise and Sunset - scattering of light
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Kerala PSC Coaching to Success wish you a nice day!
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