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Unfortunately, Mr. M. Subramanian, who maintained this website lost his battle to cancer and passed away in July, 2019. The database has over 50,000 questions. If you are interested in purchasing the website/database, please reach out using the form here.
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Q1. In an electric bulb, the filament is made of ...........
Q2. In a thermos flask the vacuum between two walls prevents the heat loss by....
Q3. "Calorie" is a unit of ..................
Q4. "Angstrom" is a unit used to measure .....................
Q5. Horse power is a unit of ....................
Q6. The velocity of the sound in vacuum is ..................
Q7. "Cryogenics" deals with ..........
Q8. Acoustics is a branch of study dealing with
Q9. Gasohol is used as fuel for automobiles. It is ...............
Q10. If you weigh 90 kg on earth what will be your weight on the moon?
Q11. The outer part of glass tumbler containing cooled water becomes wet because
Q12. The cloudy nights are warmer because ..........
Q13. A stick partially immersed in water looks bent. It is a phenomenon of .........
Q14. A petrol flame should not/cannot be extinguished by pouring of water because
Q15. The sky appears blue because
Q16. An electric bulb makes a bursting noise when it is broken because
Q17. Copper is not used in electric heaters because ......
Q18. The fuse wire has ......................
Q19. Energy is measured in the same units as .................
Q20. When a metal order increases in length when heated, its diameter ..............
Q21. Rutherford the scientist is known for being the
Q22. Red, Yellow and Blue are known as .......
Q23. The purpose of a filament in a radio tube is to ............
Q24. Sound waves above 20000 cbs are called.................
Q25. A defect in lens due to the dispersion of light is called.............
Q26. A small gap is always left between two joints of rails because ..............
Q27. The lightning is seen before the thunder sound is heard. Why?
Q28. Why a blotting paper is able to absorb quickly?
Q29. Why white clothes are preferable in summer periods?
Q30. Why an object weighs less at the equator than at the poles?
Q31. Why it takes more time cook potatoes on mountains tops because ......
Q32. The bats are able to avoid any obstruction in the dark because they ......
Q33. .................is the unit of electric current
Q34. ................is used for measuring the curvature of a surface.
Q35. " For every action, there is an equal and opposite reaction". It is the ..............law of Isaac Newton.
Q36. "Photometer" is used to determine the
Q37. A small weight put on a pressure cooker incrases the pressure of the steam because
Q38. Why a person bends forward while climbing a hill?
Q39. Carburettor is an arrangement in internal combustion engines for ..............
Q40. Steering of a car involves .................
Q41. Laser beams .............
Q42. The weight of a body at the centre of the earth will be .....
Q43. When crude oil is distilled, the products obtained will be in the sequence of (with lowest boiling point first and highest boiling point last)...............
Q44. Direct conversion of solar energy by the use of photo-voltaic cell results in the production of ................energy
Q45. Tides in the sea have stored in them ..................energy
Q46. For the rear view, motorists use ................
Q47. Roentgen's discovery was .................
Q48. Energy can be defined as the capacity to do...............
Q49. The ultrasonic waves of the bats enabled the discovery of ............
Q50. Echo sounding is the technique applied to ..................
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