ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Identify the compound formed, when ethylene combines with water in the presence of 10% sulphuric acid and HgSO4as catalyst Carbinol Methanol Ethanol Glycol
2 On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives Methyl alcohol Ethyl alcohol Ethyl hydrogen sulphate Methyl hydrogen sulphate
3 Identify the hydrocarbon formed, when ethyl bromide reacts with, alcoholic KOH at 100° Methane Ethane Ethene Ethyne
4 The bond angle between hydrogen atoms and carbon in alkane is 104.5<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 107.5<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 109.5<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 120.5<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
5 Which of the following posses linear geometry Alkane Alkene Alkyne Benzene
6 Coal heated in the absence of air of about 500 - 1000°C is converted to Coke Coal gas Coal tar All above
7 Peat before conversion to bituminous coal is converted to Lignite Anthracite Asphalt None
8 Coal is obtained from dead remains of Plants Animals Both a and b None
9 Organic compounds are soluble in all except Benzene Petroleum Ether Water
10 Rates of organic reactions are Fast Very fast Slow Non-reactive
11 The self linking of carbon atoms is called Chelation Isomerism Catenation None of the above
12 Organic compounds resemble to those of inorganic compounds having same Ionic properties Carbon forming long chain or rings Chemical forces Isomerism
13 The essential component of organic compound is O C P N
14 Wholer prepared urea from Ammonia NH<sub>4</sub>CNO NH<sub>3</sub> Uric acid
15 Vital force theory was rejected by Berzellius Kolbe Wholer Lavoiser
16 The rotation of two carbon atoms joined by double bond would happened only if Pi bond is broken Sigma bond is broken Both bonds are broken None of above
17 Which of the following has linear shape? SP SP<sup>2</sup> SP<sup>3</sup> None of the above
18 Hybridzation explain the --------- of orbitals Type of bonding Shapes Shape and type of bonding None of above
19 I-Chloropropane has two isomers, it is an example of Chain isomerism Position isomerism Functional group isomerism Metamerism
20 The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called Functional isomers Position isomers Chain isomers Metamers
21 In which molecule carbon atom is sp2hybridized CH<sub>4</sub> C<sub>2</sub>H<sub>4</sub> C<sub>2</sub>H<sub>2</sub> None of the above
22 When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are Three sigma and one P<sub>i</sub> Two sigma and two P<sub>i</sub> One sigma and three P<sub>i</sub> sigma
23 AgCl is soluble is Aqua regia H<sub>2</sub>SO<sub>4</sub> HCl NH<sub>3</sub>
24 Which one of the following metal ions is colourless? V<sup>2+</sup> Cr<sup>3+</sup> Zn<sup>2+</sup> Ti<sup>3+</sup>
25 Which of the following has the maximum number of unpaired d-electrons? Zn Fe<sup>2+</sup> Ni<sup>3+</sup> Cu<sup>+</sup>
26 Which of the following is a carbonate are? Pyrolusite Malchite Diaspore cassiterite
27 Misch mental is An alloy of Aluminium A mixture of chromium and lead chromate An alloy of lanthanoid metals An alloy of copper
28 An element in +3 oxidation state has the electronic configuration (Ar) 3d3. Its atomic number is 24 23 22 21
29 Most common oxidation states shownby cerium are +2, +4 +3, +4 +3, +5 +2, +3
30 Which of the following is obtained when Fe reacts with dil. HNO3? N<sub>2</sub>O NO NO<sub>2</sub> None of these
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