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  • Question
  • Chemical composition of cement is


  • Options
  • A. Limestone and Clay
  • B. Limestone, Clay and Gypsum
  • C. Limestone and Gypsum
  • D. Clay and Gypsum

  • Correct Answer
  • Limestone, Clay and Gypsum 

  • Tags: Bank Exams

    Chemistry problems


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    • 1. The most abundant element in the earth's atmosphere is

    • Options
    • A. Argon
    • B. Nitrogen
    • C. Oxygen
    • D. Krypton
    • Discuss
    • 2. Consider the following constituent gases of the atmosphere : 1. Argon 2. Neon 3. Helium 4.Ceirbon dioxide Which one of the following is the correct ascending sequence of the above gases in terms of the volume percentage?

    • Options
    • A. 1-3-2-4
    • B. 1-4-2-3
    • C. 4-2-3-1
    • D. 2-4-1-3
    • Discuss
    • 3. Which one of the following elements will be an isobar of calcium if the atomic number of calcium is 20 and its mass number is 40?

    • Options
    • A. Element with 18 neutrons and 20 protons
    • B. Element with 19 neutrons and 18 protons
    • C. Element with 19 neutrons and 20 protons
    • D. Element with 18 neutrons and 22 neutrons
    • Discuss
    • 4. Which of the following bonds are weakest in nature?

    • Options
    • A. Single bond
    • B. Double bond
    • C. Triple bond
    • D. Hydrogen bond
    • Discuss
    • 5. Which of the following substances cause temporary hardness in water? 1. Mg(HCO3)2 2. Ca(HCO3)2 3. CaCl2 4. MgSO4

    • Options
    • A. 3 and 4
    • B. 2and 3
    • C. 1 and 4
    • D. 1 and 2
    • Discuss
    • 6. A radio-active substance has a half life of six months. Three-fourth of the substance will decay in ______.

    • Options
    • A. Six months
    • B. Ten months
    • C. Twelve Months
    • D. Twenty four months
    • Discuss
    • 7. Ozone is an ______ of oxygen.

    • Options
    • A. Allotrope
    • B. Isotope
    • C. Isobar
    • D. Isotone
    • Discuss
    • 8. Process of loosing electrons is known as _____.

    • Options
    • A. oxidation
    • B. reduction
    • C. radiation
    • D. both oxidation and reduction
    • Discuss
    • 9. Anions are formed by _____.

    • Options
    • A. losing of electrons
    • B. gaining of electrons
    • C. gaining of neutrons
    • D. losing of neutrons
    • Discuss
    • 10. What is the chemical formula for Sodium Chloride (Salt)?

    • Options
    • A. NaCl2
    • B. NaCl
    • C. Na2Cl
    • D. Na2C
    • Discuss


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