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Question:
Is it formed by chemical reaction only?

1.of methane

2.of CFCs

3.of carbon dioxide

4. nitrous oxide

Posted Date:-2022-11-26 06:31:28

More MCQS Questions and answers

  1. 'ampere' measurement is used in
  2. A ball is thrown upwards and it returns to the ground following a parabolic path. Which of the following will remain constant-
  3. A man measures his weight as 600 N with the help of a balance. If the person stands on the same balance in a lift going up with a speed of 5 m/s, what will be the weight shown on the balance?
  4. A passenger sitting in a train running at a constant speed throws a ball vertically upwards. Where will that ball fall?
  5. A stone thrown from a tower with zero speed will fall on the ground in 4 seconds, then the height of the tower will be?
  6. AIDS spreads through-
  7. Alternating current (AC) can be converted into direct current (DC) using which of the following?
  8. Amino acids are obtained on hydrolysis of the following?
  9. At which stage of the embryo can all the body parts be identified?
  10. Chemical disinfection of drinking water can be done using which of the following?
  11. Deficiency of which of the following causes pellagra disease?
  12. For what is oil immersion used in light microscopy?
  13. From the following options, identify the hormone which helps in the growth of children.
  14. Identify the organ/part of human beings which is not related to the process of respiration.
  15. If part of a radioactive element disintegrates in one hour, its half-life may be
  16. In which of the following plants, secretory reproductive organs are found?
  17. In which of the following the plant body is differentiated into roots, stem and leaves?
  18. In which range is the pH value of water for public supply?
  19. Is it formed by chemical reaction only?
  20. Length is not measured by which of the following units?
  21. Milk is
  22. Not found in plants of Pteridophyta group.
  23. Quicksilver is a product of which of the following?
  24. Sliding friction……. it happens.
  25. The amount of heat required to convert 5 grams of ice at 20°C into steam at 100°C –
  26. The fact of the nature of light waves is indicated by which of the following phenomena?
  27. The fuse wire should have-
  28. The phenomenon of visible colors in soap thin film and soap bubbles is due to?
  29. The real shape of the object is formed on the screen by a convex lens. If the upper part of a convex lens is covered with an opaque paper, what will be the effect on the image?
  30. The temperature on the Celsius scale is 25°C. The corresponding temperature on the Fahrenheit scale will be-
  31. The wavelength of a wave in air is 0.60 cm and the speed is 300 m/s. This wave is—
  32. What is indole acetic acid?
  33. What is the outermost level of the brain?
  34. What is the reason for the difference in mass of isotopes of an element?
  35. What is the reason for weightlessness in satellite?
  36. What is the SI unit of volume?
  37. What should be the maximum permissible amount of arsenic element for domestic water supply?
  38. When oxygen and hydrogen gas are at the same temperature and pressure, there are 16 times more oxygen molecules than hydrogen molecules. Oxygen to hydrogen molecules: The ratio of the square-mean-value speed of the molecules will be-
  39. Which component of food provides maximum energy in a balanced diet?
  40. Which of the following animals does not belong to the group of mammals?
  41. Which of the following cycles is an important aspect of weather patterns on Earth?
  42. Which of the following group is not found in plants.
  43. Which of the following Indian scientists collaborated with Norman Borlaug, which resulted in the 'Green Revolution' in India?
  44. Which of the following instruments is used to measure electrical resistance?
  45. Which of the following instruments is used to record earthquakes?
  46. Which of the following is a 'conditional' amino acid?
  47. Which of the following is a good source of Vitamin-C?
  48. Which of the following is also known as Niacin?
  49. Which one is the most powerful reducing agent among the following acids?
  50. Which pair of atomic numbers represents S-block elements?
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