MCQs on Periodic Classification of Elements

1.    Total numbers of period in the periodic table are
    a) 2    b) 6    c)10    d) 7
2.    Concept of "Periodic table" of Lothar Mayer's was based on
    a) Atomic Volume    b) Atomic Number    c) Atomic Weight    d) None
3.    Law of octave was given by
    a) Dobereiner's    b) Newland's    c) Mendeleefs    d) None
4.    Total number of vertical columns in Modern periodic table are
    a)9    b)18    c)16    d)7
5.    Total number of vertical columns in Mendeleef 's table are
    a)18    b)9    c)16    d)8
6.    'Be' belongs to
    a) s-block    b) p-block    c) d-block    d) f-block
7.    Total number of main blocks in periodic table are
    a)4    b)3    c)2     d) 1
8.    Which of the following series of elements are not from same vertical column
    a) B Al Ga In Tl    b) C Si Ge Se Pb    c) N P As Sb Bi    d) Be Mg Ca Sr
9.    Which of the following element has highest density?
    a) W    b) Os    c) Ag    d) Hg
10.    Element from Chalchogen family is/are
    a) Se    b) Te    c) S    d) all
11).    Atomic number of Bi is
    a) 82         b) 83    c) 84       d) 85
12).    Arsenic element is in
    a) Boron family    b) Carbon family    c) Nitrogen family    d) Chalcogen family
13).    Which of the following is not from alkali metal family?
    a) Li    b) Na    c) K    d) None of these
14).    Which sets represents magic number?
    a) 8,19,18,32,32    b) 2, 8, 8,18,18, 32, 32    c) 8,8,16,16,32,32    d) None of these
15).    Which of the following statements is false about variation in atomic radius?
    a) Variation in radius in a transition metal series is small.
    b) Elements before the start of the transition series and after the end of transition series in a group, have nearly same radius.
    c) Variation in radius from La to Lu is small.
    d) None of these

Answers

1	d	2	a	3	b	4	b	5	d	6	a
7	a	8	b	9	b	10	c	11	b	12	c
13	d	14	b	15	d