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MDCAT Chemistry Chapter 16 Alcohols and Phenols Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Which one of the following is an appropriate indication of positive iodoform test? | Formation of H2O Brick red precipitate Release of H2 gas Yellow precipitate |
| 2 | Which one of the following groups is indicated when HCI is formed by reaction of ethanol with phosphorous pentachloride? | Amino group Halide group Hydroxyl group Hydride group |
| 3 | Which one of the following alcohol is indicated by formation of yellow crystals in lodoform tesr? | Methanol Ethanol Butanol Propanol |
| 4 | Primary, secondary aad tertiary alcohols can be identified and distinguished by | Lucas test lodoform test Baeyer's test Silver mirror test |
| 5 | The dehydration of ethyl alcohol with concentrated H2SO4 at 140°C gives | Ethene Alcohol Diethyl ether Carboxylic acid |
| 6 | Relative acidic strength of alcohol, phenol, water and carboxylie acid is | Carboxylic acid > Alcohol > Phenol > Water Carboxylic acid > Phenol > Water> Alcohol Water > Alcohol> Phenol > Carboxylic acid Phenol > Carboxylic acid > Alcohol> Water |
| 7 | ln ethyl alcohol, the bond that undergoes heterolytic cleavage most readily is | C-C C-O C-H O-H |
| 8 | Which of the following is soluble in water? | СН3ОН CCL4 CHCI3 CS2 |
| 9 | Which one of the following is more acidic | Phenol Carboxylic acid Alcohols Amines |
| 10 | Temperature required for the dehydration of ethanol into ethene in the presence of HaSOu is |
130°C 170°C 175°C 180°C |
| 11 | Which of the following alcohol is more soluble in H2O | Propanol Butanol Pentanol Hexanol |
| 12 | Phenol is completely soluble in water above | 25°C 62.3℃ 68.5°C 66.50°c |
| 13 | Phenol is colourless, crystalline and solid |
Hygroscopie Deliquescent Moistening Odourless |
| 14 | Phenol can be diatingushed from ethyl alcohol by all of the following reagents except | lodoforrn test Na Br2 /H2O NaOH |
| 15 | Which of the substance is not going to react the sodium metal: | Acetic acid Methanol Di methyl ether Ethanol |
| 16 | Which of the following alcohols is least reactive with respect to 0-H bond |
CH3OH CH-CH2-OH (CH3)2-CH-OH (CH3)3OH |
| 17 | The starting substance for the preparation of iodoform is any of the following, except | <div>СН3СН(ОН)CН3</div> CH3CH2ОН HCH2OH CH3COCH3 |
| 18 | Ethanol reacts with sodium metal to liberate | CO2 gas CO gas H2 gas Steam |
| 19 | Which of the following is more reactive where 0-H bonds break | P°alcohol T° alcohol S°alcohol Cannot be predicated |
| 20 | Alcohols of low molecular weight are: | Soluble in water Insoluble in water Soluble in water on heating Insoluble in all solvents |
