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 Choose the correct answer of transition elements? Transition elements have low melting points Transition elements do not have catalytic activity Transition elements exhibit variable oxidation states Transition elements exhibit inert pair effect
2 Turnbull's blue is a compound called? Ferricyanide Ferrous ferricyanide Ferrous cyanide Ferri - Ferro cyanide
3 Corrosion of iron can be prevented by coating the surface with Zn Sn Ni Any of the above
4 The total number of rare earth elements is 8 32 14 10
5 Among the lanthandes the one obtained by synthetic method is Lu Pm Pr Gd
6 Non-formation of menisus by Hg in presence of O3is due to the formation of Mercuric oxide Mercurous oxide Mercuric chloride Mercurous chloride
7 German silver does not contain Cu Zn Ni Mn
8 The number of unpaired electrons in ferrous ion ( Z - 26) is 3 2 4 5
9 The compound which gives oxygen on moderate heating is Zinc oxide Mercuric oxide Aluminium oxide Ferric oxide
10 High purity copper metal is obtained by Carbon reduction Hydrogen reduction Electrolytic reduction Thermite reduction
11 Bessemer converter is used in the manufacture of Pig iron Steel Wrought iron Cast iron
12 Sodium thisoulophate is used in photography because of its Oxidizing behaviour Reducing behaviour Complexing behaviour Photochemical behaviour
13 In the manufacture of iron from haematitie,limestone is added to act as Flux A reducing agent Slag An oxidizing agent
14 Rusting of iron is catalysed by Fe O<sub>2</sub> Zn H<sup>+</sup>
15 Which has the largest radius? CO<sup>3+</sup> Mn<sup>3+</sup> Fe<sup>3+</sup> Cr<sup>3+</sup>
16 Which of the following metal exhibits more than one oxidation? Na Mg Fe Al
17 Which of the following transition metal ions will have definite value of magnetic moment? Se<sup>3+</sup> Ti<sup>3+</sup> Cu<sup>+</sup> Zn<sup>2+</sup>
18 Iron, once dipped in concentrated H2SO4, does not displace copper from copper sulphates solution, because It less reactive than copper A layer of sulphates is deposited on it An inert layer of iron oxide is deposited on it All valence electrons of iron are consumed
19 Addition of iron fillings to CuSO4solution caused precipitation of Cu owing to the Reduction of Cu<sup>2+</sup> Oxidation of Cu<sup>2+</sup> Reduction of Fe Reduction of Fe<sup>3+</sup>
20 Bell metal is an alloy of Cu, Zn, and Sn Cu, Zn and Ni Cu and Zn Cu and Sn
21 A transition element is defined as an element of 3d series Which is metal Which has one stable ion Which has two stable ions Which has at least one stable ion with incomplete d-orbital
22 Which element has 4 unpaired electrons in 3d-orbital Chromium - 24 Manganese - 25 Iron - 26 Cobalt - 27
23 Which is the correct electronic configuration of Cr - 24 1s<sup>2</sup>, 2s<sup>2</sup>, 2p<sup>6</sup>, 3s<sup>2</sup>, 3p<sup>6</sup>, 3d<sup>4</sup>, 4s<sup>2</sup> 1s<sup>2</sup>, 2s<sup>2</sup>, 2p<sup>6</sup>, 3s<sup>2</sup>, 3p<sup>6</sup>, 3d<sup>3</sup>, 4s<sup>2</sup>, 4p<sup>1</sup> 1s<sup>2</sup>, 2s<sup>2</sup>, 2p<sup>6</sup>, 3s<sup>2</sup>, 3p<sup>6</sup>, 3d<sup>5</sup>, 4s<sup>1</sup> 1s<sup>2</sup>, 2s<sup>2</sup>, 2p<sup>6</sup>, 3s<sup>2</sup>, 3p<sup>6</sup>, 3d<sup>5</sup>, 4p<sup>1</sup>
24 Transition elements differ from s and p block elements due to their characteristic properties. What is not he characteristic property of transition elements Transition elements show variable oxidation states Their salts are coloured They can be used as catalyst All of them are metals
25 Potassium ferrocyanide is a Mixed salt Double salt Complex salt Normal salt
26 Which alloy contains 50% copper, 25% zinc and 25% nickel German silver Gun metal Bell metal Brass
27 Bronze is an alloy which contains 60% cu 70% cu 80% cu 99% cu
28 Transition elements form which type of bond Ionic bonds only Covalent bonds only Ionic and covalent bonds Polar bonds
29 E.D.T.A is Mono-dentate Bi-dentate Polydentate Having three lone pairs of electrons
30 In physical and chemical properties, transition elements show Similarities Dissimilarities Both of these Somestimes similarities, sometimes dissimilarities
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