ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Hydrocarbons are organic compounds which contain elements such as Hydrogen Carbon Hydrogen and carbon Halogens
2 Which is the used as test for the presence of alkenes Reaction of cold dilute alkaline KMnO<sub>4</sub> Combustion Polymerization Catalytic hydrogenation
3 The temp. used for the hydrogenation of alkenes using Ni is 2000°C 400°C 200-- 300°C 1000°C
4 What is not a common use of methane As a fuel For the preparation of haloaklanes For the preparation of methyl alcohol For the preparation of sulphuric acid
5 Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes Elemination Addition Free radical substitution Nucleophilic substation
6 The Total coal resources of Pakistan are estimated to be 184 billion 184 million tones 1.84 billion tounes 1.84 million tonnes
7 The hydrocarbons having double bonds normally end with suffix Ane Ene Yne Oic
8 Pent -1-ene-3-yne 2-pentyne-4-ene 1-pentene-3-yne Pent-2-yen-4-ene
9 The saturated hydrocarbons usually end with suffix ______ Ane Ene Yne Oic
10 2, 3-dimethylbutane 2, 3-methylbutane 2-dimethylbutane Dimethylbutane
11 Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon
12 Identify the heterocyclic compound Toluene Pyridine Butanoic acid Propenol
13 Which of the following is an aromatic compound Propanol Cyclohexane Acetone Benezene
14 Which of the following is not a hydrocarbon Butane Methyl benezene Acetylene Glucose
15 Which of the following pair contains isomers of each other Propanoic acid and propanone Acetone and acetaldehyde Ethyl alcohol and diethyl ether Methyl alcohol and dimethyl ether
16 Homologues differ from each other by an integral number of CH<sub>2</sub>groups CH<sub>3</sub>groups CH groups CH<sub>4</sub>groups
17 The catalyst,. which is used as specialist for cracking, are Aluminates Alumlnosilicates Aluminium slats All can be used
18 Quality of fuel is judged from its octane number. The best fuels are Straight chain hydrocarbons Branched chain hydrocarbons Cyclic compounds Compounds containing benzene ring
19 The percentage of methane in natural gas is 50% 60% 85% 90%
20 The major components of coal gas are Hydrogen and methane Ethane and carbon monoxide Nitrogen and ethane Ethane and carbon dioxide
21 Peat contains about 60% carbon 80% carbon 78% carbon 50% carbon
22 The gasoline with high octane No. has ______ More knocking Less knocking No knocking Only knocking
23 Catenation is a process in which carbon shows the properties of making Multiple bonds Hybridization Long chains or rings of carbon atom Showing isomerism
24 Due to the bacterial action on wood it is converted into Peat Lignite Bituminous coal Anthracite
25 Select from the following the one which alcohol
26 A double bond consists of Two sigma bonds One sigma and one Pi bond One sigma and two Pi bonds Two Pi bonds
27 Alkanes normally have ______ hybridization Sp Sp<sup>2</sup> Sp<sup>3</sup> d sp<sup>3</sup>
28 Which of the following is a product of destructive distillation of coal Ammonia Coke Cyanides Kerosene
29 The distillation of coal at high temperature and in absence of air is called Vacuum distillation Normal distillation Fractional distillation Destructive distillation
30 The formula of ketone is None of these
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