Chemistry – Class XII – d & f Block Elements - NEET & JEE Test Worksheet – 115 Multiple Choice Questions – Very Useful for Students appearing in Engineering & Other Entrance Examinations

d-block and f-block elements
1. Which of these cannot release iodine from KI solution 15. Tetrahedral species amongst these is
(1) CuSO4 (2) PbO2 (1) MnO4– (2) CrO2– 4
(3) MnSO4 (4) H 2 O 2
(3) O s O 4 (4) all of these
2. Colour of K2Cr2O7 is due to
16. Corrosive sublimate on complete reaction with
(1) d-d transitions (2) charge transfer
stannous chloride forms
(3) covalent character (4) it is not coloured
(1) Hg2Cl2 (2) HgCl2
3. Which of these metal has fully filled ‘d’ orbital in all (3) Hg (4) HgCl
its stable oxidation states
17. White compound amongst these is
(1) Zn (2) Cd
(1) CdS (2) ZnS
(3) Hg (4) All of these
(3) CuS (4) PbS
4. Which of these metals will dissolve in hot concentrated
18. Highest oxidation state shown by iron in any
NaOH?
compound is




JI
(1) Zn (2) Ti
(1) +2 (2) +3
(3) Hg (4) All of these
(3) +5 (4) +6
5. Which of these will form ionic carbides?
19. Which of the following will have magnetic moment
(1) Fe (2) Li
(3) Si (4) none of these 35 BM ?
6. The most dominant oxidation state of Ag is (1) Cu2+ (2) Fe 2+
(1) +1 (2) +2 (3) Zn2+ (4) Mn2+


7.
(3) +3
LA
A non-copper alloy is
(4) +4 20. Which of these element does not occur in nature?
(1) 92 U 235 (2) 43 Tc 99
(1) Solder (2) Brass (3) 88 Ra 226 (4) all of these
(3) Bronze (3) Bell metal 21. Which is the most abundant element of these by
8. Which of these metal has one electron in the ‘s’ orbital weight in the earth crust?
in ground state? (1) Mn (2) Fe
(1) Zn (2) Rh (3) Ti (4) Hg
(3) Pd (4) Sc 22. Misch metal is used
9. Which transition series area part of lanthenides (1) to improve strength of steel
(1) first (2) second (2) in magnesium alloys
A
(3) third (4) fourth (3) as lighter flints
(4) all of these
10. Which ion has the smallest size?
(1) Cu2+ (2) Ti2+ 23. The number of orbitals pushed down energy in
octahedral field splitting is
(3) Mn2+ (4) Ni2+
(1) 3 (2) 2
11. Transition element having density less than water
(3) 4 (4) 5
B

(1) Sc (2) Ti
24. The process employed for extraction of titanium is
(3) Zn (4) none of these
(1) Van Arkel de Boer method
12. Which of these cannot show +1 oxidation state?
(2) Kroll process
(1) Hg (2) Zn (3) Hall’s process
(3) Cu (4) All of these (4) Down’s cell
13. Wilkinson’s catalyst is 25. The element having the highest melting point in the
(1) Pd-BaSO4 (2) (Ph3P)3 RhCl first row of transition elements is
(3) Al(Et)3 + TiCl4 (4) [Co(CO)4]2 (1) Fe (2) Ti
14. The diamagnetic species amongst these is (3) V (4) Mn
(1) Hg 2+
2
(2) Cu2+ 26. Adding a few drops of conc. HCl to small amount of
CuSO4 solution
(3) Cr 3+ (4) Ti3+
(1) will make the solution colourless
(2) will ppt. Cu2Cl2
CLASSES BY ANKUR SIR 7983744732

, (3) will make the solution green 39. The most acidic character will be shown by
(4) no change will take place (1) Cr 3+ (2) Fe 3+
27. The colour of the transition element compounds is (3) Mn 7+
(4) Zn2+
due to 40. Transition elements are capable of forming alloys due
(1) high co-ordination number to
(2) high melting point (1) similar electronegativities
(3) d-d transition (2) similar ionization energy
(4) all of these (3) similar valencies
28. Which property differentiates zinc from transition (4) similar sizes
elements? 41. On treatment with H2O2, Ti4+ salts give a
(1) presence of only one oxidation state (1) deep blue colour
(2) exceptionally low melting point (2) yellow-orange colour
(3) completely filled ‘d’ orbital in all oxidation states (3) white ppt.
(4) all of these (4) no reaction




JI
29. Which of these elements does not dissolve in aqua- 42. Heaviest element in the lanthanide series is
regia? (1) Lanthanum (2) Erbium
(1) Au (2) Ag (3) Lutetium (4) Lawrencium
(3) Zn (4) Pt
43. Which of these is diamagnetic
30. Which of these will form interstitial carbides (1) Zn2+ (2) MnO4–
(1) Fe (2) W (3) CrO 42– (4) All of these
(3) Co (4) All of these
44. FeSO4 . 7H2O is isomorphous with
31.
(1) +1
LA
The most dominant oxidation state of Sc is
(2) +2
(1) white vitriol
(3) gypsom
(2) blue vitriol
(4) potash alum
(3) +3 (4) –1
45. The highest oxidation state amongst these are shown
32. Verdigris is by
(1) basic copper acetate (1) Ru (2) Mn
(2) basic zinc acetate (2) Fe (4) Ce
(3) Hg2Cl2 46. Which acid can be used to acidify in KMnO4 titration
(4) ZnS
(1) HCl (2) H 2SO 4
33. Which of these elements has 18 electrons in the (3) HNO 3 (4) HBr
outermost shell?
47. The correct order of enthalpy of hydration is
A
(1) Ar (2) Zr
(1) V(II) > Cr(II) > Mn(II) > Cu (II)
(3) Pd` (4) Zn
(2) Cu(II) > Mn(II) > Cr(II) > V(II)
34. Which period has the largest number of elements? (3) Mn(II) > Cr(II) > V(II) > Cu(II)
(1) 4 (2) 5 (4) Cr(II) > Mn(II) > Cu(II) > V(II)
(3) 6 (4) 7
48. The magnetic moment (spin only value) is less than
B

35. The largest atomic radii is of 4.0 BM for free ion
(1) Sc (2) Zr (1) Cr 2+ (2) Fe 3+
(3) Ta (4) La (3) Co3+ (4) CO 2+
36. The highest density amongst the given element is of 49. Cu2+ reacts with reagent X to form a ppt which
(1) Sc (2) W dissolves in its excess readily. X is
(3) O S (4) Hg (1) KCl (2) KCN
37. The maximum oxidation state is shown by (3) NH4SCN (4) NaN 3
(1) Sc (2) Os 50. The chemical process in the production of steel from
(3) Mn (4) Cr haematite ore involve
38. Highest paramagnetism will be (1) reduction
(1) Fe 2+ (2) Cr 3+ (2) oxidation
(3) Mn2+ (4) Co2+ (3) reduction followed by oxidation
(4) Oxidation followed by reduction

CLASSES BY ANKUR SIR 7983744732