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Physical properties of m..



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Q1. In the anion HCOO? the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?

(a) Electronic orbitals of carbon atom are hybridised
(b) The C = O bond is weaker than the C ? O bond
(c) The anion HCOO? has two resonating structures
(d) The anion is obtained by removal of a proton form the acid molecule

Q2. Boiling point of aromatic carboxylic acids are higher than that of comparable aliphatic carboxylic acids.

(a) True
(b) False
(c) Both acidolysis and aldehyde
(d) None of the mentioned

Q3. If the boiling point of propanol is 370 K, predict the boiling point of acetic acid.

(a) 322 K
(b) 329 K
(c) 370 K
(d) 390 K

Q4. What is the correct order of boiling points of the following?

(a) HCOOH > CH3COOH > C2H5COOH
(b) C2H5COOH > CH3COOH > HCOOH
(c) HCOOH > C2H5COOH > CH3COOH
(d) CH3COOH > HCOOH > C2H5COOH

Q5. Which of the following is not a reason for carboxylic acids having higher boiling point than alcohols of comparable molecular masses?

(a) Presence of electron withdrawing carbonyl group
(b) Higher polarity of OH bond than in alcohols
(c) Formation of two hydrogen bonds to form cyclic dimers
(d) Presence of more alkyl groups in carboxylic acids

Q6. As a result of intermolecular hydrogen bonding, carboxylic acids exists as ______

(a) acetals
(b) aldols
(c) hemiacetals
(d) dimers

Q7. The solubility of carboxylic acids _________ with the increase in size of alkyl groups.

(a) increases
(b) decreases
(c) remains same
(d) varies unpredictably

Q8. Benzoic acid is almost insoluble in which of the following solvents?

(a) Cold water
(b) Benzene
(c) Ether
(d) Alcohol

Q9. . Which among the following has the most unpleasant odour?

(a) Caproic acid
(b) Lauric acid
(c) Myristic acid
(d) Palmitic acid

Q10. Which of the following aliphatic carboxylic acids is a solid at room temperature?

(a) Heptanoic acid
(b) Octanoic acid
(c) Nonanoic acid
(d) Decanoic acid


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Sodium And Photassium Salts Of Higher Fatty Acids Are Called

Modified 139 Year Ago

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Sodium And Photassium Salts Of Higher Fatty Acids Are Called

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In The Chemical Reaction

Modified 231 Year Ago

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In The Chemical Reaction

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The Major Product Obtained In The Following Reaction

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The Major Product Obtained In The Following Reaction

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Sodium Salt Of An Organic Acid X Produces

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231 Year Ago

Sodium Salt Of An Organic Acid X Produces

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In The Chemical Reaction

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231 Year Ago

In The Chemical Reaction

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In The Reaction

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In The Reaction

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