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Saturday, 18 July 2020

Chemistry For HSC Part 2 - MCQs From All Chapters - By Adamjee Coaching Center

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Multiple Choice Questions
From All Chapters


By Adamjee Coaching Center

1. How many elements have been discovered so far?
  • 100
  • 110
  • 120
  • 150

2. Which of the following discovery resulted in a revision of the Mendeleev's periodic law?
  • The nucleus of atom by Rutherford
  • The elements polonium and radium by the curies
  • Atomic numbers by Moseley
  • X - Rays by Roentgen

3. Who classified the known elements into metals, nonmetals and their derivatives?
  • Doberenier
  • Al-Razi
  • Newland's
  • Mendeleev

4. In 1829, a German chemist,_____ made use of the idea of relationship between atomic weights and properties of elements for the classification of elements.
  • Doberenier
  • Al-Razi
  • Newland's
  • Mendeleev

5. The law of octaves was given by
  • Doberenier
  • Al-Razi
  • Newland's
  • None

6. "Physical and chemical properties of elements are periodic functions of their atomic weight". This is called
  • Doberenier's law of Traids
  • Newland's law of Octaves
  • Mendeleev's Periodic law
  • None

7. Lother Mayer arranged the elements in order of their increasing atomic weights and found that

  • Physical properties of the elements were the periodic function of their atomic weights.
  • Chemical properties of the elements were the periodic function of their atomic number
  • Physical properties of the elements were the periodic function of their atomic number.
  • Chemical properties of the elements were the periodic function of their atomic weights.

8. Modern classification of elements is based on
  • Doberenier's law of Triads
  • Newland's law of Octaves
  • Mendeleev's Periodic law
  • None

9. Which property is same in elements of same group of periodic table?
  • Ionization potential
  • Electronegativity
  • Electron affinity
  • Number of valance electrons

10. The valency, ionization energy, electron affinity and electronegativity of elements are related to its
  • Atomic weight
  • Properties
  • Atomic size
  • Family group

11. Which of the following is the set of most electronegative elements?
  • Na, Mg, Al
  • Ca, Sr, Ba
  • N, 0, F
  • Fe, Co, Ni

12. Which of the following elements has maximum ionization potential?
  • Mg
  • Al
  • Na
  • K

13. Each vertical column of the periodic table includes elements with chemical characteristics that are in general
  • Non identical
  • Similar
  • Different
  • Similar as well as different

14. Each horizontal row of the periodic table includes elements with chemical characteristics
  • Identical
  • Similar
  • Different
  • Similar and different

15. According to the Modern periodic law. the chemical properties of the elements are periodic functions of their
  • Density
  • Atomic number
  • Atomic mass
  • Mass number

16. The 3d transitional series contains elements having atomic numbers from
  • 22 to 23
  • 21 to 29
  • 21 to 30
  • 21 to 31

17. Elements in group IB, IIB through VIIB are known as
  • Rare earth metals
  • Transition elements
  • Lanthanides
  • Actinides

18. The fourteen elements following lanthanum are known as
  • Lanthanones
  • Lanthanides
  • Rare earths
  • All

19. Which of the following elements have the larger radius?
  • F
  • Cl
  • Br
  • I

20. Nitrogen is comparatively inert element because it has
  • Stable electronic configuration
  • Low atomic radius
  • High electronegativity
  • High dissociation energy

21. The trend of change in melting points and boiling points of elements in the period from left to right is graded
  • Increase
  • First increase then decrease
  • decrease
  • First decrease then increase




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