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Chemical used in photography is

  • sodium sulphate
  • sodium sulphite
  • sodium thiosulphate
  • sodium oxalate
Similar Questions :

1. Ozone is :

  • Non-magnetic
  • Paramagnetic
  • Ferromagnetic
  • Diamagnetic

2. What is metallurgy ?

  • process of extracting metal in pure form from its ore.
  • process of creating alloys of metals.
  • process of making metals live long.
  • None of above.

3. The most abundant rare gas in the atmosphere is ?

  • He
  • Ne
  • Ar
  • Xe

4. Which element found in all organic compounds ?

  • carbon
  • nitrogen
  • calcium
  • none of them

5. What is hottest part of the gas flame is called ?

  • blue zone
  • luminous zone
  • dark zone
  • non-luminous zone
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