Periodic Classification of Elements and Periodicity MCQ's 4

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Here are MCQ's from Periodic Classification of Elements and Periodicity chapter 1 chemistry Book 2.

21.        Mark the correct statement:

( A) Na+ is smaller than Na atom
                           (B) Na+ is larger than Na atom
                           (C) CI- is smaller than CI atom
                           (D) CI- and CI are equal in size

               22.        Who introduced the zero groups?

(A) Lothar Meyer               (B) Lockery
                           (C) Mendleev                     (D) Ramsay

23.        Element, of group I-B are called

(A) Representative elements
                           (B) Transition elements
                           (C) Rare earth
                           (D) Coinage metals

               24.        The element with Z = 24 is placed in the period

(A) 5                                    (B) 2
                           (C) 3                                    (D) 4

               25.        Which is the part of metalloids?

                           (A) NA and K                        (B) F and CI
                           (C) None of these                 (D) Cu and Au

26.        Which one of the following has the maximum electron affinity?
                           (A) I                            (B) Br
                           (C) CI                           (D) F

               27.        On electrolysis of NaH, hydrogen is liberated

                           (A) At anode               (B) in the electrolyte
                           (C) At cathode            (D) none of them

28.        Elements with greater number of electrons have _________values of ionization energy.

            A) Only one                   B) More than one
            C) Zero                          D) Infinite

29.        Which of the following possess maximum hydration power?

            A) Na+                B) K+
            C) Mg+2             D) Ca+2

30.        Higher value of electron affinity means_________
 
A. Atom will lose electron easily
B. Atom will gain electron easily
C. Atom may form di-positive ion
D. The reason is unknown

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