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Mdcat-past-papers - UHS - Chemistry Quiz

Filters: Board: UHS | Subject: Chemistry |
301. Which one of the following is an indication of positive iodoform test?



302. What is the common name of 1,2,3-propanetriol?



303. Dehydration of alcohol gives which of the following product in the presence of H₂SO₄ at 140°C?



304. Complete oxidation of alcohol gives which of the following?



305. Which one of the following compounds is a ketone?



306. When CH₃-CH₂-OH is oxidized in the presence of K₂Cr₂O₇ and H₂SO₄, the product formed is:



307. Both aldehydes and ketones are planar to the plane of carbonyl group. Which one of the following bonds is distorted towards the oxygen atom?



308. Which one of the following is the IUPAC name of the HCHO?



309. Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate(VI) solution or acidified sodium dichromate(VI) solution?



310. Ketones can be made by oxidation of:



311. Which of the following is the correct name of CH₃CH₂CH₂COCH₂CHO?



312. Which is the most suitable reagent for the conversion of R-CH₂OH → RCHO?



313. What is the IUPAC name of diisopropyl ketone?



314. C₆H₁₂O is the general formula of:



315. Consider the following reaction: R–CHO + 2[Ag(NH₃)₂]OH → R–COOH + 2Ag + H₂O + 2NH₃



316. A student mixed ethyl alcohol with small amount of sodium dichromate and added it to the hot solution of dilute sulphuric acid. A vigorous reaction took place. He distilled the product:



317. Which of the following is also called silver mirror test?



318. Which one of the following test is given by both aldehyde and ketone?



319. Propanone can be prepared from propyne by:



320. In the below reaction, the nucleophile is: HCHO + HCN → OH–CH₂–CN



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