Draw structures of the following derivatives.
(i) The 2,4-dinitrophenylhydrazone of benzaldehyde
(ii) Cyclopropanone oxime
(iii) Acetaldehydedimethylacetal
(iv) The semicarbazone of cyclobutanone
(v) The ethylene ketal of hexan-3-one
(vi) The methyl hemiacetal of formaldehyde

Write the structures of the following compounds : (i) 1-Iodo-4-methylcyclohexane (ii) 2-(3-Chlorophenyl)but-2-ene and (iii) 3-Bromomethylpropene.

Among the following compounds, some undergo aldol condensation , some undergo Cannizzaro reaction and the remaining undergo neither aldol condensation nor Cannizzaro reaction . Differentiate them and write the structures of the products of aldol condensation and Cannizzaro reaction. i) Benzaldehyde ii) Cyclohexanone iii) Methanal iv) Benzophenone v) 2- Methylpentanal vi) Butan - 1- ol vii) 2,2 - Dimethylbutanal viii) Phenyl acetaldehyde iv) 1 - Phenylpropanone

Draw the structures for the following compounds. (i) Ethanoic acid (ii) Bromopentane* (iii) Butanone (iv) Hexanal. *Are structural isomers possible for bromopentane?

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

Write the following based on the graph (i) The ordinate of L (ii) The ordinate of Q (iii) The point denoted by (-2,-2) (iv) The point denoted by (5,-4) (v) The abscissa of N (vi) The abscissa of M

Draw the structures of the following compounds. {:("(i) 3-Methylbutanal"," (ii) p-Nitropropiophenone"),("(iii) p-Methylbenzaldehyde"," (iv) 4-Methylpent-3-en-2-one"),("(v) 4-Chloropentan-2-one"," (vi) 3-Bromo-4-phenylpentanoic acid"),("(vii) p,p’-Dihydroxybenzophenone"," (viii) Hex-2-en-4-ynoic acid"):}

Give simple chemical tests to distinguish between the following pairs of compounds. {:("(i) Propanal and Propanone"," (ii) Acetophenone and Benzophenone"),("(iii) Phenol and Benzoic acid"," (iv) Benzoic acid and Ethyl benzoate"),("(v) Pentan-2-one and Pentan-3-one"," (vi) Benzaldehyde and Acetophenone"),("(vii) Ethanal and Propanal",):}

Give names of the reagents to bring about the following transformations: (i) Hexan-1-ol to hexanal (ii) Cyclohexanol to cyclohexanone (iii) p-Fluorotoluene to (iv) Ethanenitrile to ethanal p-fluorobenzaldehyde (v) Allyl alcohol to propenal (vi) But-2-ene to ethanal

Write structures of the compounds whose IUPAC names are as follows: (i) 2-Methylbutan-2-ol (ii) 1-Phenylpropan-2-ol (iii) 3,5-Dimethylhexane –1, 3, 5-triol (iv) 2,3 – Diethylphenol (v) 1 – Ethoxypropane (vi) 2-Ethoxy-3-methylpentane (v) 1 – Ethoxypropane (vi) 2-Ethoxy-3-methylpentane (vii) Cyclohexylmethanol (viii) 3-Cyclohexylpentan-3-ol (ix) Cyclopent-3-en-1-ol (x) 3-Chloromethylpentan-1-ol.