Which from the following methods is $\underline{\text{NOT}}$ used to preserve food?

  • A
    Removal of heat
  • B
    Irradiation
  • C
    Addition of water
  • D
    Addition of heat

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Why do soaps not work in hard water?

Consider the following statements:
Statement-$I$: Shaving soaps contain glycerol to prevent rapid drying.
Statement-$II$: Laundry soaps contain sodium rosinate or sodium silicate as fillers,not sodium carbonate.
Correct answer is:

Which of the following enhances the lathering property of soap?

Identify the use of the given drug.

When soap is dissolved in hard water,its cleaning ability decreases. This is due to the formation of:

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