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Chemistry Fsc Part 2 Chapter 12 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Which substance usually undergo nucleophilic addition reactions. | Benzenes Aldehydes Alkenes All of these |
| 2 | Formation of cyanohydrin from an aldehyde in an example of. | Nucleophilic substitution Nucleophilic addition Electrophilic addition Electrophilic substitution |
| 3 | Acetaldehyde react, with Grignard reagent to form | Primary alcohol Secondary alcohol Ter alcohol Carboxylic acids |
| 4 | A cyanohydrin is formed by the reaction of | Alcohol and HCN Ketone and NH3 Aldehyde and NH2OH Aldehyde and HCN |
| 5 | Acetaldehyde reacts usually with | Electrophiles only Nucleophiles only Electrophiles and nucleophiles Free radicals only |
| 6 | Industrially ethanal is prepared by air oxidation of. | Ethane Ethene Ethyne Acetic acid |
| 7 | Acetaldehyde can be prepared by the oxidation of. | Acetic acid Ethanol 1- Proponal Ethanonic acid |
| 8 | What product is formed by the dry distillation of calcium acetate. | CH3CH2COOH CH3COOH CH3COCH3 CH3CH2CHO |
| 9 | Which one is symmetrical ketone | Acetone Methyl ethyl ketone Methyl n propyl ketone 2- pentonone |
| 10 | Common names of aldehydes are derived from the common names of. | Alcohol Ketones Carboxylic acids Alkenes |
| 11 | Which of the following reagents will reacts with both aldehydes and ketones. | Grignard reagent Tollens's reagent Fehling's reagent Benedict 's reagent |
| 12 | Which of the following compounds will not give iodoform test on treatment with I2/NaOH | Acetaldehyde Acetone Butanone 3-Pentaneone |
| 13 | Acetone reacts with HCN to form a cyanohydrin. It is an example of. | Electrophilic addition Electrophilic substitution Nucleophilic addition Nucleophilic substitution |
| 14 | Ketones are prepared by the oxidation of. | Primary alcohol Secondary alcohol Tertiary alcohol None of these |
| 15 | Which of the following will have the highest boiling point. | Methanal Ethanal Propanal 2-Hexanone |
| 16 | Which substance reacts with sodium nitroprusside. | Ethanol Acetaldehyde Dimethyl ketone Methanol |
| 17 | Predict the product or reaction. Acetaldehyde +NaOH |
An aldol Acetic acid Ethanol Paraldehyde |
