ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 The boiling point of glycerol is more than propanal because of Hybridisation H-bonding Resonance All these factors
2 Which of the following process is employed to convert alkyl halide into alcohol? Addition Substitution Dehydrohalogenation Molecular rearrangement
3 Which statement in not correct about alcohol? Ethyl alcohol is heavier than water Ethyl alcohol ecaporates more quickly Alcohol with less number of carbon atoms is more soluble in water than alcohol with more number of carbons atoms Alcohol produces H<sub>2</sub>by reaction with sodium metal
4 Isopropyl alcohol on oxidation gives Acetone Ether Ethylene Acetaldehyde
5 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
6 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
7 Sodium phenoxide reacts with CO2at 400 K and 4.7 atm pressure to give Sodium salicylate Salicyl aldehyde Catechol Benzoic acid
8 Grignard reagent on reaction with a ketone forms Tertiary alcohol Secondary alcohol Primary alcohol Carboxylic acid
9 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
10 Phenol is more readily soluble in Dil. HCl Both NaOH and HCl NaOH sol Sodium bicarbonate solution
11 Scientific study of fermentation was first made by Buchner Liebig Biot Pasteur
12 C2H5OH can be differentiated from CH3OH by Reaction with HCl Reaction with NH<sub>3</sub> Iodoform test Solubility in water
13 Which is used as an antifreeze? Glycol Ethyl alcohol Water Methanol
14 Which of the following groups will increase the acidity of phenol? -NO<sub>2</sub> -CN -X (halogens) All
15 The strongest acid among the following aromatic compound is Ortho-nitrophenol Para-chlorophenol Para-nitrophenol Meta-nitrophenol
16 Ethyl alcohol on oxidation with K2Cr2O7gives Acetic acid Acetaldehyde Formaldehyde Formic acid
17 Primary and secondary alcohols on action of red hot copper give Aldehydes and ketones respectilvely ketones and aldehydes respectively Only aldehydes Only ketones
18 Alcohol fermentation is brought about by the action of CO<sub>2</sub> O<sub>2</sub> Invertase Yeast
19 Alcohols reacts with Grignard reagent to form Alkanes Alkenes Alkynes All
20 Alcohols of low molecular weight are Soluble in water Soluble in water on heating Insoluble in water Insoluble in all solvents
21 Hydrolytic coversion of sucrose into glucose and fructose is known as Induction Inversion Insertion Inhibition
22 Mild oxidation of glycerol with H2O2/FeSO4gives Glyceraldehyde Dihydroxy acetone Glycerose None
23 Ethanol containing some methanol is called Absolute spirit Rectified spirit Power alcohol Methylated spirit
24 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
25 Salol is prepared from Salicylic acid and phenol Salicylic acid and methyl alcohol Both None
26 Maximum number of active hydrogens are present in Acetic acid Glycerol Methane Methanol
27 Dehydration of glycerol give Propane Propene Acrolein Benzene
28 Which of the following cannot be produced by acidic dehydration of alcohols? Ethers Aldehyde Alkyl Hydrogen sulphate Alkene
29 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
30 Which one is primary alcohol? Buten-2-ol Propan-2-ol Butaon-1-ol 2,3-Dimethylhexane-4-ol
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