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  • Question
  • The metal does not give H2 on treatment with dilute HCL is


  • Options
  • A. Zn
  • B. Fe
  • C. Ag
  • D. Ca

  • Correct Answer
  • Ag 


  • Chemistry problems


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    • 1. 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
    • 2. The molecule which has the highest percentage of ionic character among the following is

    • Options
    • A. HI
    • B. HF
    • C. HCI
    • D. HBr
    • Discuss
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. The nuclear particles which are assumed to hold the nucleons together are

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

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

    • Options
    • A. H+
    • B. HO -
    • C. H2+
    • D. H3O+
    • Discuss
    • 9. The mass number of an atom is equal to

    • Options
    • A. the number of protons
    • B. the number of protons and electrons
    • C. the number of nucleons
    • D. the number of neutrons
    • Discuss
    • 10. The ore which is found in abundance in India is

    • Options
    • A. monazite
    • B. fluorspar
    • C. bauxite
    • D. magnetite
    • Discuss


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