ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Interstitial compounds have Half formula Fixed formula Indefinite formula None
2 Bronze is an alloy of Cu and Zn As Sb Sn
3 The color of Cr3+ion is Violet Blue Pink Green
4 Bell metal is an alloy of Sn and Copper Iron Zinc Magnesium
5 [Zn(NH3)4]3+possess geometry Square plannar Hexagonal Tetrahedral None of these
6 Most transition elements show Diamagnetic behavior Ferromagnetic behavior Paramagnetic behavior None of these
7 Out of 110 known elements, transition elements are 40 60 50 80
8 The Mn3+has ______ color Violet Green Red/brown No color
9 [Cu[NH3)4]+2will form ______ structure Square planar Tetrahedral Octahedral Trigonal bipyramidal
10 The less reactivity of transition metal is due to High heats of sublimation High ionization energies Low heats of salvation All these
11 Cu2+with d9electronic configuration appears Yellow Pink Blue Green
12 The colour of the transition metal compounds is due to p-d transition d-d transition s-p transition None of these
13 Transition metals form complexes due to the participation of partially filled f-orbitals d-orbitals s-orbitals p-orbitals
14 The total number of d-bock transition element is 10 14 40 30
15 Coordination number of Pt in [PtCI(NO2) (NH3)4]2+is 2- 4 1 6
16 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
17 The percentage of carbon in different types of iron products is in the order of Cast iron > wrought iron > steel Wrought iron > steel > cast iron Cast iron > steel > wrought iron Cast iron = steel > wrought iron
18 Which is the formula of tetra-ammine chloro-nitro platinum (IV) sulphate [Pt(NH<sub>3</sub>)<sub>4</sub>(NO<sub>2</sub>)] SO<sub>4</sub> [Pt NO<sub>2</sub>CI(NH<sub>3</sub>)<sub>4</sub>] SO<sub>4</sub> [Pt CI(NO<sub>2</sub>) (NH<sub>3</sub>)<sub>4</sub>] SO<sub>4</sub> [Pt (NH<sub>3</sub>)<sub>4</sub>(NO<sub>2</sub>) CI] SO<sub>4</sub>
19 Group VIB of transition elements contains Zn, Cd, Hg Fe, Ru, Os Cr, Mo, W Mn, Te, Re
20 Which is used to identify Cu2+ions Nitric acid Sulfuric acid NaOH HCI
21 f-Block elements are also called Non typical transition elements Outer transition elements Normal transition elements Inner transition elements
22 Which of the following is a typical transition metal Sc Y Ra Co
23 Which of the following is a non-typical transition elements Cr Mn Zn Fe
24 Which is not a bidentate ligand <br>
25 Steel may be manufacture by two processes which two are correct Open hearth process and besemer process Open hearth process and Haber process Bassemer process and Haber process Contact process and Haber process
26 The geometrical shape of a transition complexion is related to the state of hybridizing of the central atom. What is trigonal bipyramidal sp<sup>3</sup> dsp<sup>2</sup> dsp<sup>3</sup> d<sup>2</sup>sp<sup>3</sup>
27 Potassium hexacyanoferrate (II) has the formula K<sub>4</sub>[Fe(CN)<sub>6</sub>] K<sub>3</sub>[Fe(CN)<sub>6</sub>] K<sub>2</sub>[Fe(CN)<sub>6</sub>] K [Fe(CN)<sub>6</sub>]
28 A transition metal complex can be recognized by various terms. Which is not the proper term Central metal ion Coordination number Ligand Geometry of complex
29 The colour of a transition metal complex is due to d-d transition The colour of the complex is the complementary of the colour absorbed. Thus [Ti(H2O6]3+abosrbs yellow light and transmits blue and red colours therefore the solution of titanium complex appears Blue Red Yellow Mixture of blue and red or violet
30 All 3d series elements show variable oxidation states. The one shown by all 3d elements is +2 +3 +4 +5
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