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  • Question
  • Which method will be employed to test the hardness of water?


  • Options
  • A. Boiling
  • B. Distillation
  • C. Formation of lather with soap
  • D. None of these

  • Correct Answer
  • Formation of lather with soap 

  • Tags: Bank Exams

    Chemistry problems


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    • 1. Alcohol is more volatile than water because _________ is lower than water

    • Options
    • A. its boiling point
    • B. its density
    • C. its viscosity
    • D. its surface tension
    • Discuss
    • 2. Which of the following is applied on the top of the matchsticks?

    • Options
    • A. Red phosphorus
    • B. White phosphorus
    • C. Potassium sulphate
    • D. No option is correct
    • Discuss
    • 3. Which one of the following is a good electrical conductor?

    • Options
    • A. Graphite
    • B. Diamond
    • C. Peat
    • D. Charcoal
    • Discuss
    • 4. What are Aldehydes ?

    • Options
    • A. Mild oxidising agents
    • B. Strong oxidising agents
    • C. Strong reducing agents
    • D. Mild reducing agents
    • Discuss
    • 5. Cinnabar is an ore/mineral of

    • Options
    • A. Lead
    • B. Manganese
    • C. Molybdenum
    • D. Mercury
    • Discuss
    • 6. Why is Carbon Monoxide a pollutant ?

    • Options
    • A. Reacts with haemoglobin
    • B. Makes nervous system inactive
    • C. It reacts with Oxygen
    • D. It inhibits glycolysis
    • Discuss
    • 7. The most serious air pollutant causing health hazard is

    • Options
    • A. Sulphur dioxide
    • B. Carbon monoxide
    • C. Ozone
    • D. Nitrogen oxide
    • Discuss
    • 8. Terylene is a condensation polymer of ethylene glycol and which acid?

    • Options
    • A. Benzoic Acid
    • B. Salicylic acid
    • C. Phthalic acid
    • D. Terephthalic acid
    • Discuss
    • 9. Atomic explosion is triggered by

    • Options
    • A. thermo nuclear reaction
    • B. chemical reaction
    • C. controlled chain reaction
    • D. uncontrolled chain reaction
    • Discuss
    • 10. Which of the following is used as non stick coating for cooking utensils?

    • Options
    • A. Perspex
    • B. Styrofoam
    • C. Polystyrene
    • D. Teflon
    • Discuss


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