Chemistry Questions Answers

• 50. Washing soda is ?

  1. sodium sulphite
  2. sodium bicarbonate
  3. sodiun carbonate
  4. sodium biosulphite

  Answer :

  Option C

• 51. Petroleum is found in ?

  1. Marshy land
  2. Metamorphic rocks
  3. Igneous rock
  4. Sedimentary rocks

  Answer :

  Option C

• 52. Enzymes are
  

  1. Fatty acids
  2. Carbohydrates
  3. Nucleic acids
  4. Proteins

  Answer :

  Option D

• 53. Human bone does not contain

  1. calcium
  2. carbon
  3. oxygen
  4. phosphorous

  Answer :

  Option C

  Explanation:

  Human bone contains calcium, carbon, phosphorous.

• 54. Iodine can be separated from a mixture of Iodine and Potassium Chloride by ?
  

  1. Filtration
  2. Sublimation
  3. Distillation
  4. Sedimentation

  Answer :

  Option B

• 55. Which have the maximum density ?

  1. Water
  2. Benzene
  3. Ice
  4. Chloroform

  Answer :

  Option A

• 56. Which acid is present in lemon ?

  1. marlic acid
  2. citric acid
  3. lactic acid
  4. tartaric acid

  Answer :

  Option B

  Explanation:

  citric acid is present in lemon.