Which of the following is not an alloy of copper?

A. Bronze

B. Brass

C. Solder

D. Gun metal

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

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  1. A common rodenticide is (Rat Poison)
  2. Concrete is a mixture of
  3. Metals are usually heavy. A light metal is
  4. Gold dissolves in aqua regia due to the formation of
  5. Which one of the following is used in dry cleaning of garments?
  6. Harmful bacteria in drinking water cannot be destroyed by
  7. Diamonds are weighed in
  8. Which of the following is not a metal?
  9. The name rubber was given by
  10. Biogas is obtained during
  11. Leakage in Liquefied Petroleum Gas (LPG) cylinders is easily detected by adding
  12. Cinnabar is an ore of
  13. Lunar caustic is
  14. Which of the following is used in fuel to propel rockets?
  15. Heavy water was discovered by
  16. Which of the following is a Bleaching agent?
  17. The raw materials used in the manufacture of cement are
  18. Which of the following carbon compounds is used as a fire extinguisher?
  19. Which is the 'odd man' in the following?
  20. Chloroform used as anaesthetic should be preserved In the dark in tightly stoppered bottles because…
  21. Rooms in places infected by plague are disinfected using
  22. The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known…
  23. The most abundant noble gas present in air is
  24. Which of the following metals is the best conductor of heat and electricity?
  25. The scientist who synthesised the first organic compound (urea) in the laboratory was
  26. Suspended impurities in water are effectively removed by
  27. An element which is preserved under water is
  28. Ascorbic acid is the chemical name for
  29. The compound used in photography is
  30. An acid which is used as a preservative for pickles is