CSS[FPSC-U.S. Civil Service Commission]-USA MCQ Quiz Hub

[USA] Current Affairs 2021 Set 8

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1. In a very low temperature which from the following will freeze at last?




2. The science of lightning is called




3. The planet that moves round the Sun at the highest speed is




4. The most densest substance on the Earth is




5. The planet which is easily visible from the Earth is




6. For a fixed mass of gas at constant temperature, if we decrease volume, the pressure will




7. The lifespan of Red Blood Cells is __________ days.




8. The density of water is




9. Radioactivity was discovered by




10. The Suns mass is mainly consist of hydrogen (about 73%). The second main constituent (about 25%) is




11. The Sun is a/an




12. The average adult has a blood volume of about ________ liters.




13. The most abundant element in the universe is




14. The most abundant element in the Earths crust is




15. Each day human body breathe in ________ liters of air.




16. Deficiency of Vitamin-D results in




17. The SI unit of pressure is




18. A camera uses a __________ to form an image.




19. Which from the following is NOT a conductor?




20. Which of these is an anti-viral protein?




21. Pathogens contains special proteins called:




22. Which of these addictive drugs are also used as painkillers?




23. Biomass is converted into fuel by:




24. What is the original source of energy for biomass?




25. CNG stands for




26. Which from the following is true for Sound?




27. When white light is passed through a prism, it splits into _______ colours.




28. 1 nanometer = ?




29. Instrument used for measuring very high temperature is




30. Sound waves are _________ waves.




31. The lifespan of White Blood Cells is __________ day(s).




32. The fluid part of blood is known as




33. X-rays were discovered by




34. The speed of light is




35. During winter in cold countries, the __________ is mixed to melt the ice on the icy roads.




36. The nearest planet to the Earth is




37. In general, Comets have __________ orbits.




38. GPS is an abbreviation for




39. Oxidation is a chemical reaction involving the




40. At night, Plants intake __________ and release __________.




41. Urine is produced in




42. Blood is cleaned by




43. The position of an element in the Periodic Table is determined by its __________ number.




44. The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in _______ of sea water.




45. In the solar system, the Great Spot is on the planet




46. The Great Spot is a