ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Isopropyl alcohol on oxidation gives Acetone Ether Ethylene Acetaldehyde
2 Which of the following statements is correct? Phenol is less acidic than ethyl alcohol Phenol is more acidic than ethanol Phenol is more acidic than carbonic acid Phenol is more acidic than CH<sub>3</sub>COOH
3 The order of reactivity of halogen acids for reaction with C2H5OH is HCl &gt; HBr &gt; HI HI &gt; HBr &gt; HCl HBr &gt; HI &gt; HCl HBr &gt; HCl &gt; HI
4 Sodium phenoxide reacts with CO2at 400 K and 4.7 atm pressure to give Sodium salicylate Salicyl aldehyde Catechol Benzoic acid
5 Grignard reagent on reaction with a ketone forms Tertiary alcohol Secondary alcohol Primary alcohol Carboxylic acid
6 On heating glycerol with conc. Sulphuric acid a compound with unpleasant odour is obtained. The compound is Methyl alcohol Formic acid Prop-2-enal Glycerol sulphate
7 Phenol is more readily soluble in Dil. HCl Both NaOH and HCl NaOH sol Sodium bicarbonate solution
8 Scientific study of fermentation was first made by Buchner Liebig Biot Pasteur
9 C2H5OH can be differentiated from CH3OH by Reaction with HCl Reaction with NH<sub>3</sub> Iodoform test Solubility in water
10 Which is used as an antifreeze? Glycol Ethyl alcohol Water Methanol
11 Which of the following groups will increase the acidity of phenol? -NO<sub>2</sub> -CN -X (halogens) All
12 The strongest acid among the following aromatic compound is Ortho-nitrophenol Para-chlorophenol Para-nitrophenol Meta-nitrophenol
13 Ethyl alcohol on oxidation with K2Cr2O7gives Acetic acid Acetaldehyde Formaldehyde Formic acid
14 Primary and secondary alcohols on action of red hot copper give Aldehydes and ketones respectilvely ketones and aldehydes respectively Only aldehydes Only ketones
15 Alcohol fermentation is brought about by the action of CO<sub>2</sub> O<sub>2</sub> Invertase Yeast
16 Alcohols reacts with Grignard reagent to form Alkanes Alkenes Alkynes All
17 Alcohols of low molecular weight are Soluble in water Soluble in water on heating Insoluble in water Insoluble in all solvents
18 Hydrolytic coversion of sucrose into glucose and fructose is known as Induction Inversion Insertion Inhibition
19 Mild oxidation of glycerol with H2O2/FeSO4gives Glyceraldehyde Dihydroxy acetone Glycerose None
20 Ethanol containing some methanol is called Absolute spirit Rectified spirit Power alcohol Methylated spirit
21 Phenol is heated with CCl4and alkaline KOH when salicylic acid is produced.The reaction is known as Frledel-Craft reaction Riemer-Tiemann's reaction Rosenmund's reaction Sommelet reaction
22 Salol is prepared from Salicylic acid and phenol Salicylic acid and methyl alcohol Both None
23 Maximum number of active hydrogens are present in Acetic acid Glycerol Methane Methanol
24 Dehydration of glycerol give Propane Propene Acrolein Benzene
25 Which of the following cannot be produced by acidic dehydration of alcohols? Ethers Aldehyde Alkyl Hydrogen sulphate Alkene
26 Ethyl alcohol is industrially prepared from ethylene by permanganate oxidation Catalytic reduction Absorbing in H<sub>2</sub>SO<sub>4</sub>followed by hydrolysis Fermentation
27 Which one is primary alcohol? Buten-2-ol Propan-2-ol Butaon-1-ol 2,3-Dimethylhexane-4-ol
28 Which of the following undergoes uncleophilic substitution exclusively by SN1 mechanism? Benzyl chloride Ethyl chloride Chlorobenzene Isopropyl choride
29 Alkyl halides react with lithium dialkyl copper reagents to give Alkenes Alkyl copper halides Alkanes Alkenyl halides
30 Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of Onsolubility Instability Inductive effect Steric hindrance
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