Chemistry
Chapter No. 3
Periodic Table And Periodicity of Properties
Important Multiple Choice Question
1: Chemists spent a great deal of time in the twentieth century trying to organize components in a systematic way.
(a) The 18th;
(b) the 16th;
(c) the 19th;
(d) none of these
2: The discovery of ___________ was the outcome of their efforts.
(a)periodic law
(b) periodic table
(c) Vertical columns
(d) none
3: The components are arranged into the ___________ table.
(a), groups
(b), periodic table
(c), and vertical columns
(d).Periodic law
4: The table's vertical columns _______. Columns
(a) triads
(b) groups
(c) not one
5: Horizontal lines that go by the name ____. (a), times
(a), triads
(b), and so on not one
(c)Groups
6: Elements are arranged in an orderly manner in accordance with _________.
(a) A higher atomic number
(b) a lower atomic number
(c) a higher mass number
(d) Each of these
7: That was discovered by __________,(a), John Ray
(a), Dobereiner
(b), and so on
(c) a German chemist.Mendeleev's
8. The average atomic mass of strontium is ___ __ ____.
(a) Oxygen and hydrogen
(b) Potassium and sulfur
(c) Nitrogen and chlorine
(d) Barium and calcium
9: Following ___________'s successful determination of the accurate atomic masses.
a) Mendeleev (1834)
B), Rutherford (1911)
c), JJ Thomson (1856), and
d) Cannizzaro (1860).
10: British chemist Newlands presented his in _________.
(a) 1864
(b) 1865
(c) 1866
(d)1868
11: Newlands, a British chemist, presented his findings in the form of __________.
(a)Periodic table
(b) both a and c
(c) Law of octaves
(d) none of these
12: _______ organized the known components
a) Mendeleev
(b) John Ray
(c) Niels Bohr
(d)None of these
13: An element's properties are a periodic function of its _________.
(a)Mass number
(b) atomic masses
(c) both a and b
(d) none
14: The earliest ever attempt to order the elements was the _______ periodic table.
(a), Mendeleev
(b), Niels Bohr
(c), and both of them
(d)John Ray
15: H. Moseley found a new elemental characteristic in _______.
(a)1944
(b) 1913
(c)1960
(d)1954
16: An element's properties are a periodic function of its _________.
(a) Mass number
(b) Atomic mass
(c) Atomic number
(d) Each of these
17: An element's atomic number is equivalent
(a), number of neutrons
(b), number of atoms
(c), number of electrons
(d).Number of protons
18: Moreover, atomic number serves as the foundation for _______.
(a)Electronic configuration
(b) both a and c
(c) no. of electrons
(d) none of them
19: Atomic mass is not the most fundamental attribute; _____ is.
(a)Molecular atom
(b) Atomic mass
c) Atomic number
(d) elements
20: Each element has an atomic number of _________.
(a) Mobile;
(b) stationary;
(c) unstable;
(d) not one
21: The atomic number of _______ elements can be the same.
(a)One;
(b);Two
(c) Three;
(d) Five;
22: In terms of fundamental properties, an element's atomic number is more important than its atomic mass.
(a) Three
(b) Five
(c)Four
(d)Two
23: It _______ on a regular basis between elements.
(a)Fixed
(b) increases
(c) decreases
(d) none
24: An element's atomic number was discovered in ________.
a)1917,
b)1911,
c)1912,
d)1913,
25: The variation in the atomic mass-based periodic law, or ______ _.
(a), Rutherford Ford
(b), Mendeleev
(c), both
(d)John Ray
26: The _______ is based upon the arrangement of elements according to increasing atomic Number.
(a)Modern periodic law
(b) Periodic law
(c) New lands octaves
(d)periods
27: _______ components shared characteristics with the first element.
a)Sixth,
b)seventh,
c)Eighth,
d) ninth
,28: The behavior of every ninetieth element was comparable to that of atomic number ________.
(a), 17
(b), 18
(c), 16
(d) 19
29: The significance of the atomic number in the current periodic table's elemental arrangement resides in the fact that _________ is predicated upon atomic
(a) Electronic setup
(b) Groups
(c) None
(d) Periodicity
30: The elements are arranged in increasing order of atomic number.
(a) and periodic law
(b) Periodicity
(c)Periods
(d) and the periodic table
31: Repetition of qualities known as __________ at frequent intervals
(a)time frames
(b) regularity;
(c) regularity;
(d) periodic law
