Class VIII

Rayon is chemically
  1. cellulose
  2. pectin
  3. glucose
  4. amylase
Which is/are the important raw material(s) required in cement industry?
  1. Gypsum and Clay
  2. Clay
  3. Limestone and Clay
  4. Limestone
Which one of the following is the petroleum wax?
  1. Paraffin wax
  2. Jonoba wax
  3. Carnauba wax
  4. Bees wax
The major ingredient of leather is
  1. collagen
  2. carbohydrate
  3. polymer
  4. nucleic acid
What are the soaps?
  1. Salts of silicates
  2. Mixture of glycerol and alcohols
  3. Sodium or potassium salts of heavier fatty acids
  4. Esters of heavy fatty acids
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