Chemistry - Chemistry in action

Question - 1

Which one of the following is one of the earliest known dyes?

  • A alizarin
  • B eosin
  • C congored
  • D phthalein

Question - 2

Which one of the following is an example of triphenylmethane dye?

  • A alizarin
  • B malachite green
  • C orange I
  • D maritus yellow

Question - 3

Which one of the following is an example of acid dye 

  • A malachite green
  • B indigo dye
  • C orange I
  • D congored

Question - 4

Which one of the following statements is not correct with respect to soap?They

  • A are biodegradable
  • B form curdy white ppt, in hard water 
  • C cannot be used in acidic solution
  • D can be sythesised

Question - 5

Which one of the following is not a sythetic detergent?

  • A sodium lauryl sulphate
  • B sodium salt of lauryl alcohol
  • C ethoxylate
  • D sodium salt of stearic acid

Question - 6

Which one of the following fertilisers contains the maximum percentage of nitrogen?

  • A ammonium sulpate
  • B CAN
  • C NH4Cl
  • D Urea

Question - 7

The percentage of nitrogen in Urea is

  • A 20.6
  • B 20.5
  • C 25
  • D 46

Question - 8

The formula of triple superphosphate is

  • A (NH4)2HPO4
  • B Ca(H2PO4)22CaSO42H2O
  • C 5Ca(H2PO4)2F
  • D [Na(NH4)HPO44H2O

Question - 9

The percentage of P2O5 in triple superphosphate is

  • A 53.6
  • B 24.4
  • C 65.0
  • D 34.0

Question - 10

Which one of the following is an analgesic?

  • A pencillin
  • B streptomycin
  • C asprin
  • D tetracycline
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