[{"id":112455,"question":"","questionImage":"112455_636320980275511613-RQ.jpg","choices":[{"text":"","img":"112455_636320980275511613-RA1.jpg","value":"A"},{"text":"","img":"112455_636320980275511613-RA2.jpg","value":"B"},{"text":"","img":"112455_636320980275511613-RA3.jpg","value":"C"},{"text":"","img":"112455_636320980275511613-RA4.jpg","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112451,"question":"Which alcohol may be oxidised to a product which react with 2,4-dinitorphenylhydrazine reagent but not with Fehling's reagent","choices":[{"text":"Butan-1-ol","value":"A"},{"text":"Butan-2-ol","value":"B"},{"text":"2-methylpropan-1-ol","value":"C"},{"text":"2-methylpropan-2-ol","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112447,"question":"What is formed when propanone is refluxed with an anhydrous solution of NaBH<sub>4</sub>","choices":[{"text":"Propanal","value":"A"},{"text":"Propan-1-ol","value":"B"},{"text":"Propan-2-ol","value":"C"},{"text":"Propane","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112446,"question":"In 1903 Arthur Lapeworth became the first chemist to investigate a reaction mechanism. The reaction he investigated was that of hydrogen cyanide with propanone. What do we now call the mechanism of this reaction","choices":[{"text":"Electrophilic addition","value":"A"},{"text":"Electrophilic substitution","value":"B"},{"text":"Nucleophilic addition","value":"C"},{"text":"Nucleophilic substitution","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112445,"question":"Compounds X, Y and Z, all react with PCI<sub>5</sub>to release hydrogen chloride, but only one of them reacts eith 2,4-dinitrophenylhydrazine reagent. Which one of the following combinations could be X, Y and Z","choices":[{"text":"","img":"112445_636320972615859063-RA1.jpg","value":"A"},{"text":"","img":"112445_636320972615859063-RA2.jpg","value":"B"},{"text":"","img":"112445_636320972615859063-RA3.jpg","value":"C"},{"text":"","img":"112445_636320972615859063-RA4.jpg","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112444,"question":"Which reagent could be used to distinguish between CH<sub>3</sub>CH(OH)CH<sub>2</sub>CHO and CH<sub>3</sub>COCH<sub>2</sub>CH<sub>2</sub>OH","choices":[{"text":"Acidified potassium dichromate","value":"A"},{"text":"Dilute sulphuric acid","value":"B"},{"text":"2,4-dinitrophenylydrazine","value":"C"},{"text":"Fehling's reagent","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112443,"question":"","questionImage":"112443_636320966850759460-RQ.jpg","choices":[{"text":"Br<sub>2(aq)</sub>","value":"A"},{"text":"2, 4-dinitrophenylhydrazine","value":"B"},{"text":"NaBH","value":"C"},{"text":"Tollen's reagent","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112436,"question":"Which isomer of C<sub>5</sub>H<sub>11</sub>OH gives, one dehydration, the greastest number of different alkenes","choices":[{"text":"","img":"112436_636320963152434257-RA1.jpg","value":"A"},{"text":"","img":"112436_636320963152434257-RA2.jpg","value":"B"},{"text":"","img":"112436_636320963152434257-RA3.jpg","value":"C"},{"text":"","img":"112436_636320963152434257-RA4.jpg","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112432,"question":"Acetaldehyde is used to make","choices":[{"text":"Rubbber","value":"A"},{"text":"Antiseptics","value":"B"},{"text":"Phenolic resin","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112431,"question":"Which reagent will distinguish a ketone from an aldehyde","choices":[{"text":"Br<sub>2</sub>","value":"A"},{"text":"2, 4-dinitrophenylhydrazine","value":"B"},{"text":"NaBH<sub>4</sub>","value":"C"},{"text":"Tollen's reagent","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112429,"question":"During the mechanism of aldol condensation a/an ______ is formed","choices":[{"text":"Oxide","value":"A"},{"text":"Alkali","value":"B"},{"text":"Alkoxide ion","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112428,"question":"Which one of the following statement is wrong regarding differences between aldehydes and ketones","choices":[{"text":"Aldehydes undergo reduction to form primary alcohols while ketones undergo reduction to form secondary alcohols","value":"A"},{"text":"Aldehydes undergo oxidation to form acids having less number of carbon atoms while ketones undergo oxidation to form acids having same number of carbon atoms","value":"B"},{"text":"Aldehydes give positive silver mirror test while ketones give negative -mirror test","value":"C"},{"text":"Aldehydes can undergo polymerization while ketones cannot undergo polymerizarion","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112426,"question":"Aldol condensation is actually","choices":[{"text":"Electrophilic addition of carbonation","value":"A"},{"text":"Electrophilic addition of carbonium ion","value":"B"},{"text":"Nucleophilic addition of carbonation","value":"C"},{"text":"Nuclephilic addition of carbonium ion","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112423,"question":"Aldehydes is distinguished from ketones by using","choices":[{"text":"Tollen's reagent","value":"A"},{"text":"Benedict reagent","value":"B"},{"text":"Fehling solution","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112421,"question":"In aldol condensation reaction, a double bond is formed between ______ and ______ carbon atoms","choices":[{"text":"<span style=\"color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);\">α</span>and<span style=\"color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 224);\">β</span>","value":"A"},{"text":"<span style=\"color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);\">α</span>and<span style=\"color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);\">α</span>","value":"B"},{"text":"<span style=\"color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);\">α</span>and Y","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112416,"question":"Silver mirror test is applied for","choices":[{"text":"Aldehydes","value":"A"},{"text":"Alcohols","value":"B"},{"text":"Acids","value":"C"},{"text":"Esters","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112415,"question":"Cannizzaro's reaction in not given by","choices":[{"text":"Formaldehyde","value":"A"},{"text":"Acetaldehyde","value":"B"},{"text":"Benzaldyhyde","value":"C"},{"text":"Trimethylacetaldehyde","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112414,"question":"The base used in Cannizzaro's reaction is","choices":[{"text":"NaOH","value":"A"},{"text":"KOH","value":"B"},{"text":"CHI<sub>3</sub>","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":112413,"question":"Acetone reacts with HCN to form a cyanohydrin. It is an example of","choices":[{"text":"Electrophilic addition","value":"A"},{"text":"Electrophilic substitution","value":"B"},{"text":"Nucleophilic addition","value":"C"},{"text":"Nucleophilic substitution","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112410,"question":"Ketons are prepared by the oxidation of","choices":[{"text":"Primary alcohol","value":"A"},{"text":"Secondary alcohol","value":"B"},{"text":"Tertiary alcohol","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112409,"question":"Formaline Contains ______% alcohol","choices":[{"text":"80","value":"A"},{"text":"37","value":"B"},{"text":"8","value":"C"},{"text":"52","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112408,"question":"Formaldehyde is used to make","choices":[{"text":"Plastics","value":"A"},{"text":"Medicine","value":"B"},{"text":"Antiseptic","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":112407,"question":"A food chemist wants to create the odour of pineapples for a product. An ester with this odour has the formula C<sub>3</sub>H<sub>7</sub>COOC<sub>2</sub>H<sub>5.</sub>Which pair of reagents would produce this ester","choices":[{"text":"C<sub>2</sub>H<sub>5</sub>CI and C<sub>3</sub>H<sub>7</sub>COOH","value":"A"},{"text":"C<sub>2</sub>H<sub>5</sub>OH and C<sub>3</sub>H<sub>7</sub>CONH<sub>2</sub>","value":"B"},{"text":"C<sub>2</sub>H<sub>5</sub>OH and C<sub>3</sub>H<sub>7</sub>COOH","value":"C"},{"text":"C<sub>3</sub>H<sub>7</sub>OH and C<sub>2</sub>H<sub>5</sub>COCI","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112406,"question":"Which one of the following is a product of the reaction between C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>OH and CH<sub>3</sub>COCI","choices":[{"text":"C<sub>6</sub>H<sub>5</sub>OCOCH<sub>3</sub>","value":"A"},{"text":"C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>CI","value":"B"},{"text":"C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>OCOCH<sub>3</sub>","value":"C"},{"text":"C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>COCI","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112405,"question":"The color of ppts formed by Fehling's test is","choices":[{"text":"Brick red","value":"A"},{"text":"Red","value":"B"},{"text":"Yellow","value":"C"},{"text":"Orange","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112404,"question":"An organic compound has the following properties ; It gives a positive tri-iodomethane test; it gives a yellow ppt, with 2, 4-DNP regent; it does not react with Tollen's reagent . Which compound would give these results","choices":[{"text":"CH<sub>3</sub>CHO","value":"A"},{"text":"CH<sub>3</sub>CH<sub>2</sub>OH","value":"B"},{"text":"CH<sub>3</sub>CH<sub>2</sub>COCH<sub>3</sub>","value":"C"},{"text":"CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CHO","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112403,"question":"The product of the reaction between propanone and HCN is hydrolysed under acidic conditions. What is the formula of the final product","choices":[{"text":"CH<sub>3</sub>CH(OH)COOH","value":"A"},{"text":"CH<sub>3</sub>CH<sub>2</sub>CH(OH)COOH","value":"B"},{"text":"(CH<sub>3</sub>)<sub>2</sub>C(OH)COOH","value":"C"},{"text":"CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>COOH","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":112402,"question":"Aldehydes which do not have<span style=\"color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);\">α</span>-hydrogen undergo","choices":[{"text":"Aldol combination","value":"A"},{"text":"Cannizzaro's reaction","value":"B"},{"text":"Substitution","value":"C"},{"text":"Elimination","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112400,"question":"For which one of the following pairs of compounds can the members be distinguished by means of Tollen's test","choices":[{"text":"HCHO and CH<sub>3</sub>CHO","value":"A"},{"text":"CH<sub>3</sub>CHO and CH<sub>3</sub>COCH","value":"B"},{"text":"CH<sub>3</sub>COCH<sub>3</sub>and C<sub>6</sub>H<sub>5</sub>COCH<sub>3</sub>","value":"C"},{"text":"CH<sub>3</sub>COOH and CH<sub>3</sub>COOCH<sub>3</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":112397,"question":"On adding sodium nitroprusside ketones give","choices":[{"text":"Red","value":"A"},{"text":"Wine red","value":"B"},{"text":"White","value":"C"},{"text":"Orange","value":"D"},{"value":"E"}],"correctAnswer":2}]