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  • Question
  • The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 1st group and the 4th period?


  • Options
  • A. 21
  • B. 17
  • C. 19
  • D. 9

  • Correct Answer
  • 19 

  • Tags: Bank Exams

    Chemistry problems


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    • 1. Which drug is used as a Nonsteroidal anti-inflammatory drug?

    • Options
    • A. Risedronate
    • B. Diazepam
    • C. Folic Acid
    • D. Ibuprofen
    • Discuss
    • 2. Which of the following is used as anaesthetics?

    • Options
    • A. N2
    • B. N2O
    • C. CH4
    • D. CO2
    • Discuss
    • 3. Chemical name of vinegar is

    • Options
    • A. Onam
    • B. Pongal
    • C. Bihu
    • D. Hornbill
    • Discuss
    • 4. Inert gases are

    • Options
    • A. Miscible with water
    • B. Not stable
    • C. Chemically unreactive
    • D. Chemically very active
    • Discuss
    • 5. In arc welding, Argon is used because of its

    • Options
    • A. Low reactivity with metal
    • B. Ability to lower the melting point of the metal
    • C. High flammability
    • D. High calorific value
    • Discuss
    • 6. Atomic number of which of the following elements is greater than that of Iodine

    • Options
    • A. Silver
    • B. Bromine
    • C. Platinum
    • D. Zinc
    • Discuss
    • 7. Trinitrotoluene is

    • Options
    • A. used to melt metals
    • B. used to fuse two metals
    • C. used as an abrasive
    • D. used as an explosive
    • Discuss
    • 8. Iodex, a pain relief balm, has the smell of __________ .

    • Options
    • A. Methyl salicylate
    • B. Ethyl salicylate
    • C. Propyl salicylate
    • D. Butyl salicylate
    • Discuss
    • 9. Which of the following is usually not an airpollutant?

    • Options
    • A. Hydrocarbons
    • B. Sulphur dioxide
    • C. Carbon dioxide
    • D. Nitrous oxide
    • Discuss
    • 10. Which among the following is white phosphorus?

    • Options
    • A. P1
    • B. P6
    • C. P4
    • D. P5
    • Discuss


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