//M1//QN1//SUB//DL0//EQ

Write the structures of the following compounds. (i) a-Methoxypropionaldehyde (ii) 3-Hydroxybutanal (iii) 2-Hydroxycyclopentane carbaldehyde (iv) 4-Oxopentanal (v) Di-sec. butyl ketone (vi) 4-Fluoroacetophenone

//X

(i)
(ii)
(iii)
(iv)
(v)
(vi)

//M0//QN2//SUB//DL0//EQ

Write the structures of products of the following reactions. (i) (ii) (C6H5CH2)2 Cd + 2 CH3COCl → (iii) H3C – C ≡ C – H (iv)

//X

(i) (ii)
(iii) (iv)

//M0//QN3//SUB//DL0

Arrange the following compounds in increasing order of their boiling points. CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3

//X

Increasing order of boiling point: CH3CH2CH3 < CH3–O–CH3 < CH3CHO < CH3CH2OH
All these given compounds possess similar molecular masses. Since only ethanol molecules are associated due to extensive intermolecular hydrogen bonding, therefore, the boiling point of ethanol would be the highest. CH3CHO is more polar than CH3-O-CH3. Therefore, the intermolecular dipole-dipole attraction is stronger in the former. Propane molecules have only weak van der Waals forces. Hence increasing order of boiling points of the given compounds is as follows: CH3CH2CH3
< CH3-O-CH3 < CH3CHO < CH3CH2OH

//M1//QN4//SUB//DL0

Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions. (i) Ethanal, Propanal, Propanone, Butanone (ii) Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde, Acetophenone.

//X

(i) Butanone < Propanone < Propanal < Ethanal
(ii) Acetophenone < p-Tolualdehyde < Benzaldehyde < p-Nitrobenzaldehyde

//M1//QN5//SUB//DL0//EQ

Predict the products of the following reactions : (i) (ii) (iii) (iv)

//X

(i) (ii)
(iii)
(iv)

//M0//QN6//SUB//DL0//EQ

Give the IUPAC names of the following compounds: (i) Ph CH2CH2COOH (ii) (CH3)2 C = CHCOOH (iii) (iv)

//X

(i) 3-Phenylpropanoic acid
(ii) 3-Methylbut-2-enoic acid
(iii) 2-Methylcyclopentanecarboxylic acid. (iv) 2, 4, 6-Trinitrobenzoic acid

//M0//QN7//SUB//DL0//EQ

Show how each of the following compounds can be converted to benzoic acid: (i) Ethylbenzene (ii) Acetophenone (iii) Bromobenzene (iv) Phenylethene (Styrene)

//X

(i)
(ii)
(iii)
(iv)

//M0//QN8//SUB//DL0//EQ

Which acid of each pair shown here would you expect to be stronger?
(i) CH3CO2H or CH2FCO2H (ii) CH2FCO2H or CH2ClCO2H (iii) CH2FCH2CH2CO2H or CH3CHFCH2CO2H (iv)

//X

(i) CH2FCO2H (ii) CH2FCOOH (iii) CH3CHFCH2COOH (iv) F3C COOH