{"id":179,"date":"2020-09-15T15:10:08","date_gmt":"2020-09-15T10:10:08","guid":{"rendered":"https:\/\/talib.pk\/test-preparation\/?p=179"},"modified":"2020-09-15T15:10:08","modified_gmt":"2020-09-15T10:10:08","slug":"chemistry-2nd-year-aldehydes-and-ketones-mcqs","status":"publish","type":"post","link":"https:\/\/talib.pk\/test-preparation\/chemistry-2nd-year-aldehydes-and-ketones-mcqs\/","title":{"rendered":"Chemistry 2nd Year Aldehydes and Ketones MCQs"},"content":{"rendered":"<div class=\"28d95f43054b69d67289d6316e9506d8\" data-index=\"1\" style=\"float: none; margin:12px 0 12px 0; text-align:center;\">\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- talib-new -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3438155045791616\"\r\n     data-ad-slot=\"6774242552\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>You can get the Chemistry 2nd Year Aldehydes and Ketones MCQs with answers here. Aldehydes and Ketones are the organic compounds containing the carbonyl group. Both have different nomenclature. Aldehydes are manufactured in laboratories and Industries. There are various reactions to carbonyl compounds. The nucleophilic addition reactions take place in carbonyl compounds. The first one is Base-Catalysed Addition Reaction which includes Condensation reactions, Cannizzaro&#8217;s reaction, Haloform reaction. The second one is the Acid-Catalysed Addition reaction includes the Reaction of Addition of Alcohols and Ammonia Derivatives. Oxidation and Reduction Reactions are also very important to take place in Aldehydes and Ketones. Carbonyl compounds are identified using different tests. Aldehydes are used in the manufacture of different products. This chapter has a lot of importance with the entry test point of view. So, have a look at the important MCQs of this chapter.<\/p>\n<h2 style=\"text-align: center;\">Chemistry 2nd Year Aldehydes and Ketones MCQs<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-361 aligncenter\" src=\"https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/2nd-year-physics-mcqs-300x300-5.jpg\" alt=\"Chemistry 2nd Year Aldehydes and Ketones MCQs\" width=\"300\" height=\"300\" srcset=\"https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/2nd-year-physics-mcqs-300x300-5.jpg 300w, https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/2nd-year-physics-mcqs-300x300-5-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong>KEY POINTS<\/strong><\/p>\n<div class=\"box info  alignleft\" style=\"width:100%\"><div class=\"box-inner-block\"><i class=\"fa tie-shortcode-boxicon\"><\/i>\n\t\t\t\n<div class=\"lightbulb tie-list-shortcode\">\n<ul>\n<li>Nomenclature of Aldehydes and Ketones<\/li>\n<li>Preparation of Aldehydes and Ketones<\/li>\n<li>Reactivity of Carbonyl Compounds<\/li>\n<li>Nucleophilic Addition reaction<\/li>\n<li>Reduction Reaction\/Oxidation reaction<\/li>\n<li>Identification of Carbonyl Compounds<\/li>\n<li>Uses of Formaldehyde and Acetaldehyde<\/li>\n<\/ul>\n<\/div>\n\t\t\t<\/div><\/div>\n<p>&nbsp;<\/p>\n<p><strong><span style=\"color: #ff6600;\">Question#1<\/span>: Symmetrical structure of a ketone refers to:<\/strong><\/p>\n<ul>\n<li>The uneven number of carbon atoms on either side of the carbonyl group<\/li>\n<li>The same number of carbon atoms on either side of the carbonyl group<\/li>\n<li>Just I carbon more on the right of the carbonyl group<\/li>\n<li>Just I carbon more on the left of the carbonyl group<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>The same number of carbon atoms on either side of the carbonyl group<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#2<\/span>: Which of the following can be used for the oxidative preparation of aldehydes from alcohol?<\/strong><\/p>\n<ul>\n<li>Pt-asbestos<\/li>\n<li>FeO and MO<sub>2<\/sub>O<sub>3<\/sub><\/li>\n<li>Na<sub>2<\/sub>Cr<sub>2<\/sub>O<sub>7<\/sub>and h<sub>2<\/sub>SO<sub>4<\/sub><\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>All of these<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#3<\/span>: Ethylene is oxidized to acetaldehyde on a commercial scale by the use of the catalyst which is:<\/strong><\/p>\n<ul>\n<li>PdCI<sub>2<\/sub> and CuCI<sub>2<\/sub><\/li>\n<li>FeO and Mo<sub>2<\/sub>O<sub>3<\/sub><\/li>\n<li>Na<sub>2<\/sub>Cr<sub>2<\/sub>O<sub>7<\/sub> and H<sub>2<\/sub>SO<sub>4<\/sub><\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>PdCI<sub>2<\/sub> and CuCI<sub>2<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#4<\/span>: The clear fact for the structural differences between aldehyde and ketone is:<\/strong><\/p>\n<ul>\n<li>A ketone has one R group attached on the carbonyl group<\/li>\n<li>An aldehyde has two R groups attached on the carbonyl group<\/li>\n<li>An aldehyde has one R and a ketone has two R group attached to a carbonyl group<\/li>\n<li>Both A and C<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>An aldehyde has one R and a ketone has two R group attached to a carbonyl group<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#5<\/span>: Formation of yellow or orange \/red precipitates with 2,4-DNPH refers to the identification of:<\/strong><\/p>\n<ul>\n<li>Aldehydes<\/li>\n<li><strong>Both A and C<\/strong><\/li>\n<li>Ketones<\/li>\n<li>Pure alcohols only<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Both A and C<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#6<\/span>: An alcohol giving positive 2,4-DNPH test implies that:<\/strong><\/p>\n<ul>\n<li>It is 100% pure<\/li>\n<li>It may contain some contents of aldehydes and ketones<\/li>\n<li>It is ethanol<\/li>\n<li>None of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>It may contain some contents of aldehydes and ketones<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#7<\/span>: Reduction of an aldehyde using NaBH<sub>4<\/sub>gives:<\/strong><\/p>\n<ul>\n<li>Primary alcohol<\/li>\n<li>Tertiary alcohol<\/li>\n<li>Secondary alcohol<\/li>\n<li>Phenol<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Primary alcohol<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#8<\/span>: Reduction of a ketone using NaBH<sub>4 <\/sub>gives:<\/strong><\/p>\n<ul>\n<li>Primary alcohol<\/li>\n<li>Tertiary alcohol<\/li>\n<li>Secondary alcohol<\/li>\n<li>Phenol<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Secondary alcohol<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#9<\/span>: HCN can be added to:<\/strong><\/p>\n<ul>\n<li>Aldehydes<\/li>\n<li>Ketones<\/li>\n<li>Ethers<\/li>\n<li>Both A and C<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Both A and C<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#10<\/span>: Addition of HCN to acetaldehyde in the presence of dilute mineral acid and sodium cyanide forms:<\/strong><\/p>\n<ul>\n<li>Formaldehyde cyanohydrins<\/li>\n<li>Acetone cyanohydrins<\/li>\n<li><strong>Acetaldehyde cyanohydrin<\/strong><\/li>\n<li>Butanone cyanohydrins<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Acetaldehyde cyanohydrin<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#11<\/span>: Acidified hydrolysis of cyanohydrins form.<\/strong><\/p>\n<ul>\n<li>Carboxylic acids<\/li>\n<li>Hydroxyl-carboxylic acids<\/li>\n<li>Alcohols<\/li>\n<li>Aldols and ketols<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Hydroxyl-carboxylic acids<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#12<\/span>: Haloform test is given by:<\/strong><\/p>\n<ul>\n<li>Acetaldehyde<\/li>\n<li>Propanone<\/li>\n<li>Melty group ketones<\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>All of these<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#13<\/span>: CHX<sub>3<\/sub> will be given by all the carbonyl compounds containing at least one:<\/strong><\/p>\n<ul>\n<li>EthyI group<\/li>\n<li>IsopropyI group<\/li>\n<li>methyl group<\/li>\n<li>Both B and C are correct<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>methyl group<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#14<\/span>: In the oxidation of unsymmetrical ketones using strong oxidizing agents like conc.HNO<sub>3<\/sub>, which carbon atom is preferentially attacked:<\/strong><\/p>\n<ul>\n<li>A carbon atom with the maximum number of hydrogen atoms<\/li>\n<li>A carbon atom with the least number of hydrogen atoms<\/li>\n<li>Alpha<\/li>\n<li>Beta carbon<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>A carbon atom with the least number of hydrogen atoms<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#15<\/span>: Which of the following ketones will produce acid only after oxidation by acidified potassium dichromate?<\/strong><\/p>\n<ul>\n<li>EthyI n-propyI ketone<\/li>\n<li>ethyl methyl ketone<\/li>\n<li>dimethyl ketone<\/li>\n<li>diethyl ketone<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>EthyI n-propyI ketone<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#16<\/span>: What will be the product in the following reaction?<\/strong><\/p>\n<p><strong>CH<sub>3<\/sub> CH=CHCH<sub>2<\/sub>\u00a0 COCH<sub>3<\/sub> &#8212;&#8212;&#8212;?<\/strong><\/p>\n<ul>\n<li>CH<sub>3<\/sub>CH<sub>2<\/sub> CH<sub>2<\/sub> CH<sub>2<\/sub>COCH<sub>3<\/sub><\/li>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub> CH<sub>2<\/sub> CH<sub>2<\/sub>CH(OH) CH<sub>3<\/sub><\/li>\n<li>CH<sub>3<\/sub> CH= CHCH<sub>2<\/sub> CH(OH) CH<sub>3<\/sub><\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>CH<sub>3<\/sub> CH= CHCH<sub>2<\/sub> CH(OH) CH<sub>3<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#17<\/span>: Which of the following will not form enolate ion?<\/strong><\/p>\n<ul>\n<li>CH<sub>3<\/sub>COCH<sub>3<\/sub><\/li>\n<li>CH<sub>3<\/sub>SwHO<\/li>\n<li>HCHO<\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>HCHO<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#18<\/span>: In this compound C1H<sub>2<\/sub>-C<sub>2<\/sub>CH<sub>3<\/sub> the hybridization of carbon number 1 and carbon number 2.<\/strong><\/p>\n<ul>\n<li>Sp<sup>3<\/sup> ,Sp<sup>3<\/sup><\/li>\n<li>Sp<sup>2 ,<\/sup>Sp<sup>2<\/sup><\/li>\n<li>Sp<sup>2,<\/sup> Sp<sup>3<\/sup><\/li>\n<li><sup><span style=\"font-size: 16px;\">Sp,<\/span>\u00a0<\/sup>Sp<sup>2<\/sup><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Sp<sup>3<\/sup> ,Sp<sup>3<\/sup><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#19<\/span>: Which of the following has maximum steric hindrance?<\/strong><\/p>\n<ul>\n<li>(C<sub>2<\/sub>H<sub>5<\/sub>)<sub>2<\/sub>CO<\/li>\n<li>CH<sub>3<\/sub>COCH<sub>3<\/sub><\/li>\n<li>C<sub>3<\/sub>H<sub>7<\/sub>COCH<sub>3<\/sub><\/li>\n<li>CH<sub>3<\/sub>COH<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>C<sub>3<\/sub>H<sub>7<\/sub>COCH<sub>3<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#20<\/span>: Which of the following has maximum reactivity in nucleophilic substitution reactions?<\/strong><\/p>\n<ul>\n<li>Formaldehyde<\/li>\n<li>Acetaldehyde<\/li>\n<li>Propanone<\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Formaldehyde<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#21<\/span>: Formation of cyanohydrins form an aldehyde is an example of:<\/strong><\/p>\n<ul>\n<li>Nucleophilic substitution<\/li>\n<li>Nucleophilic addition<\/li>\n<li>Electrophilic addition<\/li>\n<li>Electrophilic substitution<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Nucleophilic addition<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#22<\/span>: For which one of the following pairs of compounds can the members be distinguished by means of Tollen&#8217;s test.<\/strong><\/p>\n<ul>\n<li>HCHO and CH<sub>3<\/sub> CHO<\/li>\n<li>CH<sub>3<\/sub>CHO and CH<sub>3<\/sub>COCH<sub>3<\/sub><\/li>\n<li>HCHO<\/li>\n<li>CH<sub>3<\/sub> CH<sub>2 <\/sub>CH(CHO) CH<sub>3<\/sub><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>CH<sub>3<\/sub>CHO and CH<sub>3<\/sub>COCH<sub>3<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#23<\/span>: All of the following react with Fehling solution except:<\/strong><\/p>\n<ul>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub> Cho<\/li>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub>COCH<sub>3<\/sub><\/li>\n<li>HCHO<\/li>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub> CH(CHO) CH<sub>3<\/sub><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>CH<sub>3<\/sub> CH<sub>2<\/sub>COCH<sub>3<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#24<\/span>:Which of the following will not give an iodoform test?<\/strong><\/p>\n<ul>\n<li>Ethanol<\/li>\n<li>Ethanol<\/li>\n<li>3-pentanone<\/li>\n<li>2-pentanone<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>3-pentanone<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#25<\/span>: Which substance does not oxidize easily?<\/strong><\/p>\n<ul>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub>CHO<\/li>\n<li>CH<sub>3 <\/sub>CHO<\/li>\n<li>HCHO<\/li>\n<li>CH<sub>3<\/sub>COCH<sub>3<\/sub><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>HCHO<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#26<\/span>: Which one of the following sets of compounds oxidizes aldehydes as well as ketones?<\/strong><\/p>\n<ul>\n<li>CuSO<sub>4<\/sub>+NaOH+Citric acid<\/li>\n<li>CuSO<sub>4<\/sub>+ NaOH+Tartaric acid<\/li>\n<li>AgNO<sub>3<\/sub>+NH<sub>4<\/sub>OH<\/li>\n<li>K<sub>2<\/sub>Cr<sub>2<\/sub>O<sub>7<\/sub>+Cone.H<sub>2<\/sub>SO<sub>4<\/sub><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>K<sub>2<\/sub>Cr<sub>2<\/sub>O<sub>7<\/sub>+Cone.H<sub>2<\/sub>SO<sub>4<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#27<\/span>:Acetaldehyde reacts normally with:<\/strong><\/p>\n<ul>\n<li>Electrophiles only<\/li>\n<li>Nucleophiles only<\/li>\n<li>Electrophiles and nucleophiles<\/li>\n<li>Free radicals only<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Electrophiles and nucleophiles<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#28<\/span>: The structural formula of the compound which is an isomer of acetone is:<\/strong><\/p>\n<ul>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub> CHO<\/li>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub> CH<sub>2<\/sub>CHO<\/li>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub>OH<\/li>\n<li>CH<sub>3<\/sub> CH<sub>2<\/sub> CH<sub>2<\/sub>OH<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>CH<sub>3<\/sub> CH<sub>2<\/sub>OH<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#29<\/span>:2-Pentanone and 3-pentanone are:<\/strong><\/p>\n<ul>\n<li>Metamers<\/li>\n<li>Functional group isomers<\/li>\n<li>Geometrical isomers<\/li>\n<li>Chain isomers<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Metamers<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#30<\/span>: Ethylene is oxidized to acetaldehyde on a commercial scale by the use of the catalyst which is:<\/strong><\/p>\n<ul>\n<li>PdCI<sub>2<\/sub> and CuCI<sub>2<\/sub><\/li>\n<li>FeO and Mo<sub>2<\/sub>O<sub>3<\/sub><\/li>\n<li>Na<sub>2<\/sub>Cr<sub>2<\/sub>O<sub>7<\/sub> and H<sub>2<\/sub>SO<sub>4<\/sub><\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>PdCI<sub>2<\/sub> and CuCI<sub>2<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>You can get the Chemistry 2nd Year Aldehydes and Ketones MCQs with answers here. Aldehydes and Ketones are the organic compounds containing the carbonyl group. Both have different nomenclature. Aldehydes are manufactured in laboratories and Industries. There are various reactions to carbonyl compounds. The nucleophilic addition reactions take place in carbonyl compounds. The first one &hellip;<\/p>\n","protected":false},"author":2,"featured_media":361,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts\/179"}],"collection":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/comments?post=179"}],"version-history":[{"count":0,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts\/179\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/media\/361"}],"wp:attachment":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/media?parent=179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/categories?post=179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/tags?post=179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}