ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 6-d series is in the period : 4th 5th 6th 7th
2 Series starting from57La,42Hf -80Hg is in the period: 4th 5th 6th 7th
3 5-d series is in the period : 4th 5th 6th 7th
4 4-d series is in the period: 4th 5th 6th 7th
5 Series starting form 39Y to 48CD is in period: 4th 5th 6th 7th
6 Which period starts from 11Sc to 30Zn ? First Period Second Period Third Period 4th Period
7 3-d series elements are present in: First period Second Period Third period 4th period
8 Oxalic acid oxidizes to: CO CO<sub>2</sub> Oxalates None of these
9 Property of transition element is : Low m.p and b.p Parramagnetism Oxidation state Low binding energies
10 Content of carbon in steel is: 0.12 to 0.25% 0.25% to 2.5% 3.0 to 3.5% 4.0 to 4.5%
11 Maximum variable oxidation state is of: Mn<sup>+2</sup> Fe<sup>+3</sup> Cr<sup>+1</sup> a and b
12 Solubility of KMnO4 at higher temperature is: 5% 7% 15% 25%
13 During oxidation in k2Cr2O7, Cr VI changes to : I II III IV
14 Rusting can be avoided by : Making alloys Tin or Zinc plating Use of enamel All of these
15 Coordination sphere may be: Cationic Anionic Neutral All above
16 [Ti(H2O)6]+3ion absorbs colour: Blue Yellow Green Red
17 Which is non typical transition element : Ni Co Y Fe
18 The total number of transition elements is: 10 14 40 50
19 Coordination number of Pt in [PtCl (NO2) (NH3)4]2- 2<sup>-</sup> 4 1 6
20 The colour of transition metal complexes is due to: d-d transitions of electorns Paramagnetic nature of transition Ionization Loss of s-electrons
21 The percentage of carbon in different types of iron products is in the order of: Cast iron &gt; wrought iron &gt; steel wrought iron &gt; steel &gt; cast rion Cast iron &gt; steel &gt; wrought iron Cast iron = steel &gt; wrought iron
22 Which is the formula of tetra-ammine chloronitro platinum (VI) sulphate? [Pt(NH<sub>3</sub>)<sub>4</sub>(NO<sub>2</sub>)]SO<sub>4</sub> [PtNO<sub>2</sub>Cl(NH<sub>3</sub>)<sub>4</sub>]SO<sub>4</sub> [PtCl(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>)Cl]SO<sub>4</sub>
23 Group VI-B of transition elements contains: Zn, Cd, Hg Fe ,Ru ,Os Cr, Mo ,W Mn, Te, Re
24 Which of the following is a typical transition metal? Sc Y Ra Co
25 Which of the following is non-typical transition element? Cr Mn Zn Fe
26 Hybridized in oxygen is: sp sp<sup>2</sup> sp<sup>3</sup> dsp<sup>3</sup>
27 Hybridized in carbon is: sp sp<sup>2</sup> sp<sup>3</sup> d<sup>2</sup>sp
28 Dipole moment of CO molecule is: 0.0 1.112 D 0.112 D 2.112 D
29 A compound used as eye wash: Borax Boric acid Metabolic acid Pyroboric acid
30 Corrundam is ore of: Li Be B Al
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