Q 1.The incorrect statement regarding periodic classification of elements is:
(a) The periodic law is “properties of elements are periodic function of their atomic numbers”
(b) Non-metals are more in number as compared to metals in periodic table
(c) For transition elements the d subshell are filled with electrons monotonically with increase in atomic number
(d) The first I.E. of elements along a period do not vary in a regular manner with Increase in atomic number
Q 2.Atomic radius decreases in a period, but after hologen the atomic radius suddenly increases. Thus, inert gases has almost highest radius in a period. The explanation for such an increase is:
(a) inert gases has most stable configuration
(b) inert gases do not take part in bonding
(c) it is the crystal / van derWaal’s radius which is reported In case of inert gases
(d) none of the above
Q 3.The existance of magic numbers cannot be explained on the basis of :
(a) an orbital can have a maximum of two electrons
(b) each group begins with a new shell
(c) each period begins with a new shell
(d) orbitals are filled in order of their increasing energies
Q 4.The incorrect statement among the following is:
(a) the properties of elements are periodic function of their atomic numbers
(b) among the isoelectronic species – Na+, Mg++ and Al+++, the ion having smallest radius is Al+++ ion
(c) the outermost electronic configuration of group 15 elements is ns2 np5
(d) electro-negativity of an element depends upon its atomic size
Q 5.Which of the following is not the characteristic of Bohr’s period?
(a) Atomic size decreases across the period
(b) Electronegativity Increases a the period
(c) Metallic character decreases across a period
(d) Acidic nature of oxyacids decreases across a period
Q 6.The incorrect statement for long form of periodic tables is:
(a) It reflects the sequence of filling the electrons in the order of sub energy levels s, p, d and f
(b) It helps in predicting the stable valency states of the elements
(c) It helps in predicting the relative ionicity of the bond between any two elements
(d) It has 2 series in periods namely even and odd series
Q 7.Match list-I with list-II and select the correct answer using the codes given below the lists:
List-I List-II
(A) 1s2, 2s2, 2p6, 3s2 (i)In
(B) 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s1(ii) Pd
(C) 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4a8, 5s2(iii} Mg
(D) 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d10, 5s2, 5p1(iv)Cu
A B CD
(a)(i) (ii) (iii) (iv)
(b)(i) (iii)(ii) (iv)
(c)(iii)(ii) (iv)(i)
(d)(iii)(iv) (ii) (i)
Q 8.Reason not seen for diagonal relationship is :
(a) same size (b) same electronegativlty
(c) same electron affnity(d) same polarisibility
Q 9.The statement Incorrect for f-block elements:
(a) they belong to group3rd (III B) of periodic table
(b) their outer most three shells are Incomplete
(c) they are collectively known as transuranic elements
(d) 4f elements are called rare earths or Lanthanons
Q 10.Which of the following statements are true ?
(a) Mendeleef’s periodic law has atomic number as it basis
(b) Mendeleef’s periodic table consists of 10 horizontal rows or series
(c) The table presented by Mendeleef’s was horizontally aligned initially
(d) None of the above
Q 11.Diagonal relationships are/is shown by:
(a) Si and Al(b) Mg and Al(c) Be and Al(d) B and P
Q 12.Choose the incorrect statement:
(a) Liquid 02 sticks to the poles of magnet
(b) Silver perchlorate is soluble in water
(c) Atomic size of Ag is less than that of gold
(d) Many peroxides are coloured because of the presence of unpaired electron in them
Q 13.The species isoelectronic with Ne is/are:
(a) N3+(b) Sn2+(c) Al3+(d) Ca2+
Q 14.The increasing of electron affinities in accordance with electronic configurations given below are:
(1) 1s2, 2s2, 2p6, 3s2, 3p5(ii) 1s2, 2s2, 2p3
(iii) 1s2, 2s2 2p5(iv) 1s2, 2s2, 2p6 3s1
(a) (ii) (iv) (iii) (i)(b) (i) (ii) (iii) (iv)
(c) (i) (iii) (ii) (iv)(d) (iv) (iii) (ii) (i)
Q 15.Correct statement among the following is:
(a) The mp of B is greater than that of C
(b) frans-1, 2 - dichloro, pent -2-ene has a dipole moment
(c) The mp of B is less than that of C
(d) None of the above
Q 16.Choose the pairs which are non iso structural:
(a) NF and H3O+(b) BF3 and N(c) NF3 and N(d) None of these
Q 17.Which of the following statements are in correct ?
(a) EA of 15th (5A) gp elements is more than that of corresponding elements of 16 gp (VIA)
(b) Electronegativity of halogens decreases from F to I
(c) EA of Cl is higher than that of F though their electronegativities are reverse in order
(d) EA of noble gases is almost zero
Q 18.Which of the following species is known?
(a) AgOH(b) SH6(c) PbI4(d) IF6
Q 19.The isoelectronic structure among the following is:
(i) (ii) SH6(iii) (iv) NH3
(a) (i), (ii)(b) (i), (iii)(c) (i), (iv)(d) (ii), (iii) and (iv)
Q 20.Match the following:
Z Element
(A) 14(i) Metal
(B) 31(ii) Non-metal
(C) 36(iii) Metalloid
(D) 54
ABCDABCD
(a) (i)(ii)(iii)(iii)(b) (iii)(i)(ii)(ii)
(c) (ii)(iii)(i)(ii)(d) (ii)(i)(iii)(i)
Q 21.The screening effect of d-electron is:
(a) equal to that of p-electrons(b) much more than p-electrons
(c) same as that off-electrons(d) less than p-electrons
Q 22.The statement which is incorrect about effective nuclear charge, will be:
(a) Z’eff = Z - eff. Z- (a is Slater’s screening constant)
(b) Z’eff increase as we move across the period
(c) Z’ eff decreases from top to bottom in a group
(d) Z’eff is constant or almost constant for f-block elements
Q 23.Some ionisation energies of an element X re written below:
I1 = 970 kJ/g
I2 =1320 kJ/g
I3 =2110 kJ/g
I4 = 2830 kJ/g
I5 = 10890 kJ/g
I6 = 11560 kJ/g
The outermost electronic configuration of X is:
(a) ns2np1(b) ns2np2(c) ns2np3(d) ns2np4
Q 24.How many ionisation energies of C-atom have?
(a) 3 (b) 4 (c) 5 (d) 6
Q 25.Choose the correct option regarding electron affinity of ions or atoms:
(a) Cl < F (b) O- < S-(c) S > O-(d) N- > P
Q 26.Which of the following halides are soluble in water?
(a) AIF3(b) AgI(c) AgCl(d) All are equaly soluble
Q 27.Which of the following pairs have approximately the same atomic radii?
(a) K and Sr(b) Al and Mg(c) Al and Ga(d) Na and Ne
Q 28.Choose the correct statement:
(a) Ti3+ salts are better reducing agents(b) Ga+ salts are better reducing agents
(c) Pb4+ salts are better reducing agents(d) As5+ salts are better oxidising agents
Q 29.The 1st ionisation energy of N is more than that of oxygen because of:
(a) smaller size of N nucleus(b) N atom has lesser nuclear charge
(c) presence of half filled p-orbitals m N(d) greater attraction of electron by the nucleus
Q 30.The hydride ion (H-) is a stronger base than OH-. Suggest the reaction that occur when Na+H- is dissolved in water:
(a) H- (aq) + H2O H3O+(b) H- (aq) + H2O (l) OH- + H2
(c) H- + H2O no reaction(d) None of the above
Q 31.While going top to bottom in a group, analyse the following and choose the correct statement?
(a) All the atoms have same number of valence electrons
(b) Gram atomic volume increases
(c) Electronegativity decreases
(d) Metallic character and basic nature of oxides decreases
Q 32.Exothermic process among the following is:
(a) K(s) K+ (g) + 1e-(b) Ca(s) +Ca2+ (g) + 2e-
(c) O- + 1e- O2-(d) O +1e- O-
Q 33.A, B and C are 3 substances. A does not conduct electricity in solid or liquid state. B conducts electricity both in fused and solution state, while C conducts electricity only in solution state. Then choose the incorrect statement regarding A, B and C:
(a) A has polar covalent linkage(b) A has non-polar covalent linkage
(c) B is ionic in nature(d) C has polar covalent linkage
Q 34.Which of the following conversions show minimum energy release?
(a) C C-(b) N N-(c) O O-(d) F F-
Q 35.The correct order of second ionisation energies of C, N, O and F is:
(a) C > N > O > F(b) O > N > F > C(c) Q > F > N > C(d) F > O > N > C
Answers
1. / d / 2. / c / 3. / b / 4. / c / 5. / d / 6. / d / 7. / d8. / c / 9. / c / 10. / c / 11. / c / 12. / c / 13. / c / 14. / a
15. / c / 16. / c / 17. / a / 18. / d / 19. / d / 20. / b / 21 / d
22. / d / 23. / b / 24. / b / 25. / c / 26. / a / 27. / c / 28 / d
29. / c / 30. / b / 31. / c / 32. / c / 33. / a / 34. / b / 35. / c