The neutron was discovered by

A. Chadwick

B. Madam Curie

C. Becquerel

D. Aston

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Which of the following is a Bleaching agent?
  2. Which of the following is not a physical change?
  3. On chemical analysis, a bottle cork is found to contain primarily
  4. The commonest ore of aluminium is
  5. A non-metal which is a good conductor of electricity is
  6. The gas used in balloons in the place of hydrogen is
  7. Which of the following is baking soda?
  8. Physico-chemical characteristics of water in water sources undergo changes due to
  9. Ozone occurs in the upper layers of air in the atmosphere because
  10. Which of the following cannot be used for the preparation of soap?
  11. The hormone which absorption is increases glucose oxidation and glucose
  12. The soaps used in shaving cream are
  13. Deficiency of iron causes
  14. Which of the following biology laboratory?
  15. Colour blindness is
  16. The rate of setting of cement is slowed down by the addition of
  17. Penicillin was discovered by
  18. Water always contains hydrogen and oxygen in the ratio 1:8 by weight. This is in accordance with the
  19. A valuable by-product in the manufacture of soap is
  20. The carbon cycle ensures that
  21. A non-metal which is a good conductor or heat and electricity is
  22. Leakage in Liquefied Petroleum Gas (LPG) cylinders is easily detected by adding
  23. In the process of purification of water for town supply, the substance used to remove bad smell and…
  24. Rooms in places infected by plague are disinfected using
  25. The non-metal which is electropositive is
  26. The number of neutrons in the nucleus of an atom of mass A and atomic number Z is given by
  27. In the mouth, starch is converted into ______ by the action of saliva.
  28. A hormone which contains iodine is
  29. Clark's method for removal of temporary hardness in water uses
  30. Cholesterol is