Organic Chemistry PYQ — Page 37

 The major product of the above reactions is

The major product in the reaction 

The formulas of $A$ and $B$ for the following reaction sequence are 

When enthanol is heated with conc. ${H}_{2}{\mathrm{SO}}_{4}$, a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, is

Major product '$B$' of the following reaction sequence is 

The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to

Given below are two statements. Statement I : Phenols are weakly acidic. Statement II : Therefore they are freely soluble in $\mathrm{NaOH}$ solution and are weaker acids than alcohols and water. Choose the most appropriate option

The major product of the following reaction contains____bromine atom(s). 

Match List-I with List-II <table class="pyq-table"><tbody><tr><td></td><td>List-I</td><td></td><td>List-II</td></tr><tr><td>A</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/648b5a6d417cc3fb48d67bf1/question_1__q_648b5a6d417cc3fb48d67bf1__cdn-question-pool.getmarks.app__116acc6d-c3ed-4635-81e0-bc1365245017-image__ad1e04b958_final_ppt_sync.png" alt="JEE Main 2022 Chemistry, Alcohols Phenols and Ethers — question figure 1"></td><td>I</td><td>${\mathrm{Br}}_{2}$ in ${\mathrm{CS}}_{2}$</td></tr><tr><td>B</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/648b5a6d417cc3fb48d67bf1/question_2__q_648b5a6d417cc3fb48d67bf1__cdn-question-pool.getmarks.app__d1bec61a-e4d5-4e89-ae36-7353eb7b5802-image__dea3866f00_final_ppt_sync.png" alt="JEE Main 2022 Chemistry, Alcohols Phenols and Ethers — question figure 2"></td><td>II</td><td>${\mathrm{Na}}_{2}{\mathrm{Cr}}_{2}{O}_{7}/{H}_{2}{\mathrm{SO}}_{4}$</td></tr><tr><td>C</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/648b5a6d417cc3fb48d67bf1/question_3__q_648b5a6d417cc3fb48d67bf1__cdn-question-pool.getmarks.app__871dc4ce-2b3f-4687-ac4a-b9b19a44f42e-image__e5c4dec309_final_ppt_sync.png" alt="JEE Main 2022 Chemistry, Alcohols Phenols and Ethers — question figure 3"></td><td>III</td><td>$\mathrm{Zn}$</td></tr><tr><td>D</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/648b5a6d417cc3fb48d67bf1/question_4__q_648b5a6d417cc3fb48d67bf1__cdn-question-pool.getmarks.app__04f8eef3-8007-44a7-99e0-9dc0be87e087-image__57c05f0286_final_ppt_sync.png" alt="JEE Main 2022 Chemistry, Alcohols Phenols and Ethers — question figure 4"></td><td>IV</td><td>${\mathrm{CHCl}}_{3}/\mathrm{NaOH}$</td></tr></tbody></table>Question: Choose the correct answer from the options given below

Amongst the following, the major product of the given chemical reaction is 

The major product formed in the following reaction, is 

 Consider the above reaction sequence and identify the product $B$.

Consider the following reaction sequence  The product '$B$' is

What is the major product of the following reaction? 

${\mathrm{CH}}_{3}-{\mathrm{CH}}_{2}-\mathrm{CN}\rightarrow _{\mathrm{Ether}}^{{\mathrm{CH}}_{3}\mathrm{MgBr}}A\overset{{H}_{3}{O}^{+}}{\rightarrow }B\rightarrow _{\mathrm{HCl}}^{\mathrm{Zn}-\mathrm{Hg}}C$. The correct structure of $C$ is

Isobutyraldehyde on reaction with formaldehyde and ${K}_{2}{\mathrm{CO}}_{3}$ gives compound '$A$'. Compound '$A$' reacts with $\mathrm{KCN}$ and yields compound '$B$', which on hydrolysis gives a stable compound '$C$'. The compound '$C$' is

Which of the following conditions or reaction sequence will NOT give acetophenone as the major product?

Toluene can be easily converted into benzaldehyde by which of the following reagents?

Two isomers $(A)$ and $(B)$ with Molar mass $184g/\mathrm{mol}$ and elemental compositio $C,52.2%;H,49%$ and $\mathrm{Br}42.9%$ gave benzoic acid and $p-$ bromobenzoic acid, respectively on oxidation with ${\mathrm{KMnO}}_{4}$. Isomer $'A'$ is optically active and gives a pale yellow precipitate when warmed with alcoholic ${\mathrm{AgNO}}_{3}$. Isomer $'A'$ and $'B'$ are, respectively :

Two statements are given belwo : Statement I : The melting point of monocarboxylic acid with even number of carbon atoms is higher than that of with odd number of carbon atoms acid immediately below and above it in the series. Statement II : The solubility of monocarboxylic acids in water decreases with increase in molar mass. Choose the most appropriate option :

 Consider the above reaction sequence, the Product ‘$C$’ is

Two isomers '$A$' and '$B$' with molecular formula ${C}_{4}{H}_{8}$ give different products on oxidation with ${\mathrm{KMnO}}_{4}$ in acidic medium. Isomer '$A$' on reaction with ${\mathrm{KMnO}}_{4}/{H}^{+}$ results in effervescence of a gas and gives ketone. The compound '$A$' is

Which among the following is the strongest Bronsted base?

Which statement is NOT correct for p-toluenesulphonyl chloride?