ECAT Chemistry Chapter 17 Transition Elements Online Test With Answers

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ECAT Chemistry Chapter 17 Transition Elements Online Test

Sr. # Questions Answers Choice
1 The elements in which d or f-orbitals are incomplete are called Transition elements Typical elements Actinides lanthanides
2 What are alloys A homogenous mixture of two or more elements A homohenous mixture of metal and a non-metal A homogenous mixture of two or more metals None of the above
3 Elements in which f-orbitals are in the process of completion are called Outer transition element Inner transition elements Non-tranistion elements Radioactive elements
4 Which one of the following has highest density Zn Os Ni Cu
5 The total number of transition elements is 10 14 40 50
6 Coordination number of Pt in [Pt Cl(NO2) (NH3)]2-is 2- 4 1 6
7 The colour of transition metal complexes is due to d-d transitions of electrons Para magnetic nature of transition elements Ionization Loss of s-electrons
8 Which of the following is a not typical transition element Cr Mn Zn Fe
9 An oxidixing agent K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> H<sub>2</sub>SO<sub>4</sub> FeSO<sub>4</sub> K<sub>2</sub>SO<sub>4</sub>
10 Potassium chromate has formula KClO<sub>3</sub> K<sub>2</sub>CO<sub>3</sub> K<sub>2</sub>CrO<sub>4</sub> K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>
11 The coordination number of iron in [Fe(H2O)6]3+is 2 3 4 6
12 What is the name of the comlex [Ni(CO)4] Tetracarbonylnickel (o) Tetracabonylnickel Tetracabonylnickel (II) Tetracabonylnickel (IV)
13 [Co(NH3)6]3+will form ______ structure Square planar Tetrahedral Octahedral Trigonal bipyamidal
14 Which is in differnet phase form other metals Ni Hg Cd Na
15 Which of the following is not related to transition metals They have a high tensile strength They are ductile They are malleable They have low melting points
16 Which of the following acts as ligand NH<sub>3</sub> NH<sub>2</sub>-- CH<sub>2</sub>-- CH<sub>2</sub>-- NH<sub>2</sub> C<sub>2</sub>O<sup>2-</sup><sub>4</sub> All these
17 Electronic configuration of Cu+2is 4S<sup>2</sup>, 3d<sup>9</sup> 4s<sup>-1</sup>, 3d<sup>10</sup> 4S<sup>0</sup>, 3d<sup>9</sup> None of these
18 The free spaces between the metal atoms and its crystal lattice are called Valance spaces Empty spaces Interstices None
19 Platinum (IV) chloride combines with ammonia to form compounds in which the coordination number of the platinum is 6. A formula unit on one of the compound contains a cation and only two chloride ions. What is the formula of this compound Pt(NH<sub>3</sub>)<sub>6</sub>CI<sub>4</sub> Pt(NH<sub>3</sub>)<sub>5</sub>CI<sub>4</sub> Pt(NH<sub>3</sub>)<sub>4</sub>CI<sub>4</sub> Pt(NH<sub>3</sub>)<sub>3</sub>CI<sub>4</sub>
20 Which of the following d-block elements can show the highest oxidation number in its compounds Chromium Copper Nickel Manganese
21 Titanium is used as a catalyst in Hydrogenation Dehydrogenation Polymerization of P.E. Oxidation of ammonia
22 Which of the following is a transition element Sr Sn Cr Pb
23 A phtotographic plate is coated with an emulsion of silver nitrate and AgCI AgI AgBr NaNO<sub>3</sub>
24 Stainless steel contains Cr upto 12% 18% 10% 5%
25 Corrosion may be prevented by Allcying Paints Metallic coatings All
26 Which of the following is used as disinfectant K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> KMnO<sub>4</sub> K<sub>2</sub>MnO<sub>4</sub> K<sub>2</sub>CrO<sub>4</sub>
27 The oxidation number of Ni in [Ni(CO)4] is +1 0 +4 -4
28 The oxidation state of Fe in [Fe(CN)6]3-is +2 +3 +4 -3
29 The formula of curprite is Cu<sub>2</sub>S Cus Cu<sub>2</sub>O CuCO<sub>3</sub>
30 The geometry of [Co(NH3)6]3+is Tetrahedral Square planar Octahedral None of these
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