IIT FOUNDATION
Test – 2 (X std)
Name-_______________________________ Marks: 25m
I. CHOOSE THE CORRECT ANSWERS: [25x1=25]
1) The first attempt to classify elements was made by [ ]
(A) Mendeleeff (B) Newlands (C) Lothar Meyer (D) Dobereiner
2) Law of octaves was enunciated by [ ]
(A) J.w Dobereiner (C) JAR Newlands
(B) Lothar Meyer (D) D.I Mendeleeff
3) In the modern periodic table, elements are arranged in [ ]
(A) Increasing mass (B) Increasing volume
(C) Increasing atomic number (D) Alphabetically
4) The elements on the right side of the periodic table are : [ ]
(A) Metals (B) Metalloids (C) Non-metals (D) Transition elements
5) The elements with atomic numbers 10, 18, 36, 54 and 86 are all [ ]
(A) Light metals (B) Inert gases (C) Halogens (D) Rare earth
6) Alkaline earth metals belong to the [ ]
(A) s- block of the periodic table (B) p-block of the periodic table
(C) d-block of the periodic table (D) f- block of the periodic table
7) Halogens belong to the [ ]
(A) s- block of the periodic table (B) p-block of the periodic table
(C) d-block of the periodic table (D) f- block of the periodic table
8) Which of the following represents the electronic configuration of d-block elements ?
(A) (n-1)s2nd1-10 (B) (n-1)d1-10ns2 [ ]
(C) (n-1)d1-10ns2p4 (D) (n-1)p4ns2
9) Which pair of atomic numbers represents s-block elements ? [ ]
(A) 7,15 (B) 6,12 (C) 9,17 (D) 3,12
10) Which one of the following belongs to representative group of elements in the periodic table ? [ ]
(A) Lanthanum (B) Argon (C) Chromium (D) Aluminium
11) An element of atomic number 29 belongs to [ ]
(A) s- block (B) p-block (C) d-block (D) f- block


12) Which of the alkali metals is smallest in size [ ]
(A) Rb (B) K (C) Na (D) Li
13) Which of the following has largest radius ? [ ]
(A) Mg2+ (B) Na+ (C) O2- (D) F-
14) Which one of the following is smallest in size ? [ ]
(A) N3- (B) O2- (C) F- (D) Na+
15) The size of the following species increases in the order [ ]
(A) Mg2+ < Na+ < F- < Al (B) F- < Al < Na+ > Mg2+
(C) Al < Mg < F- < Na+ (D) Na+ < Al < F- < Mg2+
16) In the long form of periodic table, the element having lowest ionization potentials are present in [ ]
(A) I group (B) IV group (C) VII group (D) Zero group
17) The first IE of lithium will be [ ]
(A) greater than Be (B) less than Be
(C) equal to that of Na (D) equal to that of F
18) Which of the following electronic configuration corresponds to an element having lowest ionization energy ? [ ]
(A)1 s2, 2s2p6 (B) 1s2, 2s2p6, 3s1 (C) 1s2, 2s2p5 (D) 1s2, 2s2p3
19) Which of the following transitions involves maximum amount of energy ? [ ]
(A) M- (g) M (g) (B) M (g) M+ (g)
(C) M+ (g) M2+ (g) (D) M2+ (g) M3+ (g)
20) Which has the highest electronegativity ? [ ]
(A) C (B) Mg (C) O (D) S
21) Which of the following sets of atoms is arranged in order of increasing electronegativity ? [ ]
(A) S, Si, P (B) S, P, Si (C) Si, P, S (D)Si, S, P
22) Which of the following is the most electronegative ? [ ]
(A) Oxygen (B) Chlorine (C) Fluorine (D) Nitrogen
23) Which one of the following elements has the highest ionization energy ? [ ]
(A) [Ne]3s23p1 (B) [Ne]3s23p2 (C) [Ne]3s23p3 (D) [Ar]3d104s24p2
24) The element with configuration 1s2, 2s2p6, 3s2 would be [ ]
(A) A metal (B) A non-metal (C) An inert gas (D) A metalloid
25) The ionization energy of nitrogen is more than that of oxygen because [ ]
(A) Of the extra stability of half-filled p orbitals in nitrogen
(B) Of the smaller size of nitrogen
(C) The former contains less number of electrons
(D) The former is less electronegative