General Science one liner questions

General Science Notes one liner




1. Which is used as a coolant in nuclear reactors? – Liquid sodium


2. Which is the second most abundant metal in the earth’s crust? – Iron


3. Which plant is used for green manuring in India? – Sunhemp


4. Optic fibres are mainly used for which purpose? – Communication


5. Which is the lightest gas? – Hydrogen


6. What is the Mendel’s principles of inheritance? – Sexual reproduction


7. How is the frequency of ultrasound wave typically? – Above 20,000 kHz


8. What is formula of plaster of paris? – 2CaSO4.H2O


9. Which is the largest flower in the world ? – Rafflesia


10. Who received Nobel Prize twice for the same subject? – Marie Curie


11. What are Carbon, diamond and graphite together called? – Allotropes


12. What is the approximate velocity of light per second? – 3 × 108 m


13. Which metal was first discovered by man ? – Copper


14. Which nutrients are most likely to be affected by food processing and storage? – 

Vitamins


15. What do we use in SONAR? – Ultrasonic waves


16. By whom was the quantum theory first enunciated? – By Max Planck


17. Food wrapped in newspaper is likely to get contaminated with which desease? – Lead


18. The wavelength of Xrays is of the order of howmany angstrom? – 1 Angstrom


19. Which isotope of uranium capable of sustaining chain reactions? – U235


20. What is HepatitisB, which affects liver? – Virus


21. Which polymer is widely used for making bullet proof material? – Polyethylene


22. Which is the essential element in all organic compounds? – Carbon


23. Which vitamin is essential for poor bone and teeth formation? – Vitamin D


24. Oldwritten material, which cannot be read easily, how can be read? – By infrared rays


25. Which synthetic fibre is known as artificial silk? – Rayon


26. Which vegetable protein is considered as good as an animal protein? – Soyabean 

protein



27. ‘mho’ is the unit of which unit? – Specific resistance


28. Which are the important raw materials required in cement industry ? – Limestone and clay


29. By which would Desert plants be characterised? – By sunken stomata




30. What is the number of basic units in the International System of Units? – 7


31. Which are the hightemperature superconductors? – Ceramic oxides


32. Which is the sweetest sugar? – Fructose


33. A small weight is put on the pressure cooker. It increases the pressure of the steam. 
Why? –
Area of contact is small



34. Which is the highest grade of coal whose surface is shining and has the highest calorific value? –
Anthracite



35. In certain amino acids, which elements is found in addition to carbon, hydrogen, nitrogen and oxygen? – Sulphur




36. A car is running on a road at a uniform speed of 60 km/hr. What is the net resultant force on the car? – Equal to zero



37. Which substance coated on plastic tape? – Iron oxide


38. Which combination of foods providing protein quality nearest to that of meat? – Sprouted gram and groundnuts


39. Which common devices works on the basis of the principle of mutual induction? – Transformer


40. Which charcoal is used to deeolourise raw sugar? – Wood charcoal


41. Milk, cheese and eggs are the source of vitamins which vitamins? – A and D


42. Which is the wave in which the particies of the material move up and down as the wave goes from
left to right? – Transverse



43. According to Dalton’s atomic theory, which is the smallest particle which can exist independently?
An atom


44. What is the source of immediate energy for cellular activity? – ATP



45. Which is most efficient engine? – Electric



46. What is the conversion of Fe++ to Fe+++? – Oxidation



47. By whom was Gene first isolated? – Hargobind Khurana



48. When milk is churned, how does the cream separate from it? – Due to the centrifugal force



49. For which thing is Washing soda the common name? – Sodium carbonate



50. From the biological evolutionary point of view, the human heart is close to the heart of which animal? – Pig







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