Read the passage given below and answer the following questions:
The addition reaction of enol or enolate to the carbonyl functional group of aldehyde or ketone is known as aldol addition. The \(\beta\)-hydroxyaldehyde or \(\beta\)-hydroxyketone so obtained undergo dehydration in second step to produce a conjugated enone. The first part of reaction is an addition reaction and the second part is an elimination reaction. Carbonyl compound having \(\alpha\)-hydrogen undergoes aldol condensation reaction.

The following questions are multiple choice questions. Choose the most appropriate answer:
(i) Condensation reaction is the reverse of which of the following reaction?

(ii) Which of the following compounds would be the main product of an aldol condensation of acetaldehyde and acetone?

(ii) Which combination of carbonyl compounds gives phenyl vinyl ketone by an aldol condensation?

(iv) Which of the following will undergo aldol condensation?

Read the passage given below and answer the following questions :
When an aldehyde with no a-hydrogen reacts with concentrated aqueous NaOH, half the aldehyde is converted to carboxylic acid salt and other half is converted to an alcohol. In other words, half of the reactant is oxidized
and other half is reduced. This reaction is known as Cannizzaro reaction 

The following questions are multiple choice questions. Choose the most appropriate answer :
(i) A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives

(ii) Which of the following compounds will undergo Cannizzaro reaction?

(iii) Trichloroacetaldehyde is subjected to Cannizzaro's reaction by using NaOH. The mixture of the products contains sodium trichloroacetate ion and another compound. The other compounds is

(iv) Which of the following reaction will not result in the formation of carbon-carbon bonds?

Read the passage given below and answer the following questions
A tertiary alcohol H upon acid catalysed dehydration gives a product I. Ozonolysis of I leads to compounds J and K. Compound J upon reaction with KOH gives benzyl alcohol and a compound L, whereas K on reaction with KOH gives only M.

The following questions are multiple choice questions. Choose the most appropriate answer :
(i) Compound H is formed by the reaction of

(ii) The structures of compound J, Kand L, respectively, are

(iii) When (J) is treated with acetic anhydride, in the presence of corresponding salt of an acid, the product obtained is

(iv) Which of the following statements is correct for compound (K)?

Read the passage given below and answer the following questions :
Carboxylic acids dissociate in water to give carboxylate ion and hydronium ion.
RCOOH + H₂O \(\longrightarrow\) RCOO^- + H3O⁺
The acidity of carboxyl group is due to the presence of positive charge on oxygen which liberates proton. The carboxylate ion formed is resonance stabilised.

Carboxylic acids are stronger acids than phenols. Electron withdrawing groups (EWG) increase the acidity of carboxylic acids by stabilising the conjugate base through delocalisation of negative charge by inductive and/ or resonance effects. Electron donating group (EDG) decrease the acidity by destabilising the conjugate base.
The following questions are multiple choice questions. Choose the most appropriate answer :
(i) Which of the following reactions is showing the acidic property of carboxylic acid?

(ii) Which one of the following is the correct order of acidic strength?

(iii) Which of the following acids has the smallest dissociation constant?

(iv) The correct order of acidity for the following compounds is

Read the passage given below and answer the following questions:
Aldehydes and ketones having acetyl group are oxidised by sodium hypohalate (NaOX) or halogen and alkali (X₂ + OH^-) to corresponding sodium salt having one carbon atoms less than the carbonyl compound and give a haloform.

Sodium hypoiodite (NaOI) when treated with compounds containing CH₃CO - group gives yellow precipitate of iodoform. Haloform reaction does not affect a carbon-carbon double bond present in the compound.
The following questions are multiple choice questions. Choose the most appropriate answer:

(ii) Which of the following compounds is not formed in iodoform reaction of acetone?

(iii) For the given set of reactions

starting compound A corresponds to

(iv) An organic compound 'A' has the molecular formula C₃H₆O. It undergoes iodoform test. When saturated with HCI it gives 'B' of molecular formula C₉H₁₄O. 'A' and 'B' respectively are