ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which of the following is not an ortho-para directing group
2 Which of the following is an ortho-para directing group
3 Which of the following is not an electrophitic substitution reaction of benzene Nitration Sulphonation Fridel-Craft alkylation Free radical chlorination of benzene
4 Which of the following reaction is characteristic of benzene Electrophilic substitution reaction Reduction Oxidation Ozonolysis
5 Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called Wurtz reaction Fitting reaction Wurtz fitting reaction None of these
6 When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product Na<sub>2</sub>CO<sub>3</sub> NaHCO<sub>3</sub> Ca(OH)<sub>2</sub> CaCO<sub>3</sub>
7 The carbon, carbon bond length in benzene is 1.54A° 1.34A° 1.20A° 1.39A°
8 Cyclohexane can be converted not benzene in the presence of Pt at 100°C Pt at 250°C Pd at room temperature Pt at room temperature
9 2-bromonitrobenzene 2-nitrobromobenzene 1-bromonitrobenzene 1-nitrobromobenzene
10 Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes 2 1 3 4
11 Which of the following is not aromatic hydrogencarbon Benzene Naphthalene Toluene Cyclohexene
12 The simplest and the parent members of aromatic hydrocarbon is Benzene Toluene Biphenyis Naphthalene
13 The order of dehydration of alcohol 10&gt; 20&gt; 30 10&gt; 30&gt; 20 20&gt; 30&gt; 10 30&gt; 20&gt; 10
14 3 4 5 2
15 The gasoline having octane No. 100 has ______ More knocking Less knocking No knocking Only knocking
16 1, 5-pentadiene Penta-1, 4-diene 1, 1-pentadiene 1, 4-pentene
17 Which structure shows a primary alcohol
18 2, 2, 4-trimethylpentane 2, 4, 4-trimethylpentane 2, 4, 4-methyepentane 2, 2, 4-methylpentane
19 0 1 2 3
20 1 2 3 4
21 Condensation Dehydration Dehydrogenation Hydrogenation
22 Which of these always applies to a nucleophile It attacks a double bond It has a lone pair of electrons It is single atom It is negatively charged
23 Addition Elimination Addition Reduction Elimination Reduction Substitution Elimination
24 0 1 0 2 1 1 1 2
25 How many structural acid cis-trans isomers are there for dichloroprepe, C3H4Cl2 3 5 6 7
26 Cracking done at low pressure and with a catalyst is called _______ cracking Thermal Catalytic Steam None of them
27 A nuclophile must Be an atom A group of atoms Have a lone pair Be negatively charged
28 Which is not a nucleophile Benzene Chlorine Ethene Ethanol
29 Which of the following is an electrophile Bromine KBr NH<sub>3</sub> Benzene
30 Which is not the poplar reaction
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