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Chemistry problems

  • 1. The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

  • Options
  • A. chain isomerism
  • B. functional group isomerism
  • C. positional isomerism
  • D. metamerism
    • Discuss
  • 2. The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

  • Options
  • A. p-electrons in Ne(Z = 10)
  • B. s-electrons in Mg(Z = 12)
  • C. d-electrons in Fe(Z = 26)
  • D. p-electrons in CI(Z = 17)
    • Discuss
  • 3. The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

  • Options
  • A. carbon
  • B. hydrogen
  • C. oxygen
  • D. nitrogen
    • Discuss
  • 4. What are the number of moles of CO2 which contains 16 g of oxygen?

  • Options
  • A. 0.5 mole
  • B. 0.2 mole
  • C. 0.4 mole
  • D. 0.25 mole
    • Discuss
  • 5. The molecule which has the highest percentage of ionic character among the following is

  • Options
  • A. HI
  • B. HF
  • C. HCI
  • D. HBr
    • Discuss
  • 6. The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called

  • Options
  • A. granite
  • B. basalt
  • C. igneous rocks
  • D. sedimentary rocks
    • Discuss
  • 7. The metal does not give H2 on treatment with dilute HCL is

  • Options
  • A. Zn
  • B. Fe
  • C. Ag
  • D. Ca
    • Discuss
  • 8. The nuclear particles which are assumed to hold the nucleons together are

  • Options
  • A. electrons
  • B. positrons
  • C. neutrons
  • D. mesons
    • Discuss
  • 9. The iron ore magnetite consists of

  • Options
  • A. Fe2O3
  • B. Fe3OH4
  • C. FeCO3
  • D. 3Fe2O3 .. 3H2O
    • Discuss
  • 10. The hydronium ion is

  • Options
  • A. H+
  • B. HO -
  • C. H2+
  • D. H3O+
    • Discuss

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