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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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