Aldehydes Ketones and Carboxylic Acids: Chemistry Free Online Mock Test 1By admin / January 12, 2025 Uncategorized 5/5 - (1 vote) 0% 0 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 🧪Aldehydes, Ketones and Carboxylic Acids – 15 MCQ Quiz 🔢 Number of Questions: 15 MCQs ⏱️ Time Required: 15 minutes 📚 Subject: Chemistry (Aldehydes, Ketones and Carboxylic Acids) 🎯 Difficulty Level: Moderate (10+2 / NEET Level) 👨🎓 Ideal For: NEET UG aspirants 10+2 Board/NCERT/17+Age Chemistry students Competitive exam learners 📌 Key Features: Concept-based questions Covers important periodic trends Helps in quick revision Useful for mock test practice 🚀 Outcome: After completing this quiz, you will be able to confidently understand and apply Aldehydes, Ketones and Carboxylic Acids in exams. 1 / 15 1. Which is the most suitable reagent for the following conversion? A B C D 2 / 15 2. Which of the following compounds do not undergo aldol condensation? [VVI] (a, d) (b, d) (c, d) (a, c) 3 / 15 3. Which of the following compounds will give butanone on oxidation with alkaline KMnO4 solution? (a) Butan-l-ol (b) Butan-2-ol (c) Both (a) and (b) (d) None of these 4 / 15 4. Compounds A and C in the following reactions are (a) identical (b) positional isomers (c) functional isomers (d) optical isomers Explanation: CH₃CHO reacts with CH₃MgBr to give secondary alcohol (A). Dehydration gives alkene (B), which on hydroboration-oxidation forms the same alcohol (C), so A and C are positional isomer. 5 / 15 5. CH₃–C≡CH on hydration (H₂SO₄/HgSO₄) forms ‘A’ which on isomerisation gives acetone. What is ‘A’ and type of isomerism? (a) prop-1-en-2-ol, metamerism (b) prop-1-en-1-ol, tautomerism (c) prop-2-en-2-ol, geometrical isomerism (d) prop-1-en-2-ol, tautomerism Explanation: Hydration of alkyne forms enol (prop-1-en-2-ol) which undergoes keto-enol tautomerism to give acetone. 6 / 15 6. The correct order of increasing acidic strength is (a) Phenol < Ethanol < Chloroacetic acid < Acetic acid (b) Ethanol < Phenol < Chloroacetic acid < Acetic acid (c) Ethanol < Phenol < Acetic acid < Chloroacetic acid (d) Chloroacetic acid < Acetic acid < Phenol < Ethanol A B C D 7 / 15 7. Cannizzaro’s reaction is not given by (a) (CH₃)₂C–CHO (b) C₆H₅CHO (c) HCHO (d) CH₃CHO Explanation: Cannizzaro reaction is given by aldehydes without α-hydrogen. CH₃CHO has α-hydrogen, so it does not undergo this reaction. 8 / 15 8. Addition of water to but-1-yne in presence of H⁺ and Hg²⁺ gives which product? (a) CH₃CH₂CH₂CHO (b) CH₃CH₂COCH₃ (c) CH₃CH₂COOH (d) CH₃CHO Explanation: Hydration of terminal alkyne follows Markovnikov rule forming enol, which tautomerizes to ketone (butan-2-one). 9 / 15 9. The reagent which does not react with both acetone and benzaldehyde is (a) Sodium hydrogen sulphite (b) Grignard reagent (c) Fehling’s solution (d) Hydroxylamine Explanation: Fehling’s solution oxidizes aliphatic aldehydes but does not react with ketones (acetone) or aromatic aldehydes (benzaldehyde). 10 / 15 10. Which of the following compounds is most reactive towards nucleophilic addition reactions? (a) CH₃CHO (b) CH₃COCH₃ (c) C₆H₅CHO (d) C₆H₅COCH₃ Explanation: Aldehydes are more reactive than ketones due to less steric hindrance and +I effect. Aromatic compounds are less reactive due to resonance stabilization. 11 / 15 11. Which of the following conversions can be carried out by Clemmensen reduction? (a) Benzaldehyde into benzyl alcohol (b) Cyclohexanone into cyclohexane + Benzophenone into diphenylmethane (c) Benzoyl chloride into benzaldehyde (d) Benzophenone into diphenylmethane 12 / 15 12. Treatment of compound Ph–O–CO–Ph with NaOH solution yields (a) phenol (b) sodium phenoxide + sodium benzoate (c) sodium benzoate (d) benzophenone Explanation: Ester hydrolysis with NaOH gives phenol and sodium benzoate; phenol further reacts with NaOH to form sodium phenoxide. 13 / 15 13. Which product is formed when benzaldehyde is treated with concentrated aqueous KOH solution? [VVI] (a) Potassium benzaldehyde (b) Potassium benzoate + benzyl alcohol (c) Dipotassium salt of benzoic acid (d) Phenol + potassium benzoate Explanation: Benzaldehyde has no α-hydrogen, so it undergoes Cannizzaro reaction giving one molecule oxidized (benzoate) and one reduced (benzyl alcohol). 14 / 15 14. Through which of the following reactions number of carbon atoms can be increased in the chain? (a) Grignard reaction (b) Cannizzaro’s reaction (c) Aldol condensation (d) HVZ reaction a + b b+ c a + c b + c 15 / 15 15. In Clemmensen reduction carbonyl compound is treated with (a) zinc amalgam + HCl (b) sodium amalgam + HCl (c) zinc amalgam + nitric acid (d) sodium amalgam + HNO3 Your score isThe average score is 0% 0% Restart quiz 0% 0 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 🧪Aldehydes, Ketones and Carboxylic Acids – 15 MCQ Quiz 🔢 Number of Questions: 15 MCQs ⏱️ Time Required: 15 minutes 📚 Subject: Chemistry (Aldehydes, Ketones and Carboxylic Acids) 🎯 Difficulty Level: Moderate (10+2 / NEET Level) 👨🎓 Ideal For: NEET UG aspirants 10+2 Board/NCERT/17+Age Chemistry students Competitive exam learners 📌 Key Features: Concept-based questions Covers important periodic trends Helps in quick revision Useful for mock test practice 🚀 Outcome: After completing this quiz, you will be able to confidently understand and apply Aldehydes, Ketones and Carboxylic Acids in exams. 1 / 2 1. Benzophenone can be obtained by (a) benzoyl chloride + benzene + AlCl3 (b) benzoyl chloride + diphenylcadmium (c) benzoyl chloride + phenylmagnesium chloride (d) benzene + carbon monoxide + ZnCl2 a , b b, c a, c b , c 2 / 2 2. Arrange the following compounds in decreasing order of acidic strength: CH₃COOH, ClCH₂COOH, FCH₂COOH(a) CH₃COOH > ClCH₂COOH > FCH₂COOH(b) FCH₂COOH > ClCH₂COOH > CH₃COOH(c) ClCH₂COOH > FCH₂COOH > CH₃COOH(d) CH₃COOH > FCH₂COOH > ClCH₂COOH a b c d Explanation: Electron withdrawing groups increase acidity by –I effect. F has stronger –I effect than Cl, so FCH₂COOH is most acidic, while CH₃COOH is least. Your score isThe average score is 0% 0% Restart quiz 0% 0 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 🧪Aldehydes, Ketones and Carboxylic Acids – 15 MCQ Quiz 🔢 Number of Questions: 15 MCQs ⏱️ Time Required: 15 minutes 📚 Subject: Chemistry (Aldehydes, Ketones and Carboxylic Acids) 🎯 Difficulty Level: Moderate (10+2 / NEET Level) 👨🎓 Ideal For: NEET UG aspirants 10+2 Board/NCERT/17+Age Chemistry students Competitive exam learners 📌 Key Features: Concept-based questions Covers important periodic trends Helps in quick revision Useful for mock test practice 🚀 Outcome: After completing this quiz, you will be able to confidently understand and apply Aldehydes, Ketones and Carboxylic Acids in exams. Add at least one question to start Your score isThe average score is 0% 0% Restart quiz 0% 0 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 🧪Aldehydes, Ketones and Carboxylic Acids – 15 MCQ Quiz 🔢 Number of Questions: 15 MCQs ⏱️ Time Required: 15 minutes 📚 Subject: Chemistry (Aldehydes, Ketones and Carboxylic Acids) 🎯 Difficulty Level: Moderate (10+2 / NEET Level) 👨🎓 Ideal For: NEET UG aspirants 10+2 Board/NCERT/17+Age Chemistry students Competitive exam learners 📌 Key Features: Concept-based questions Covers important periodic trends Helps in quick revision Useful for mock test practice 🚀 Outcome: After completing this quiz, you will be able to confidently understand and apply Aldehydes, Ketones and Carboxylic Acids in exams. Add at least one question to start Your score isThe average score is 0% 0% Restart quiz Post Views: 23
[Bengali] Haloalkanes and Haloarenes Online Mock Test 20 MCQ-2 Uncategorized / By admin / May 24, 2024
