What is meant by the following terms ? Give an example of the reaction in each case.
`{:("(i) Cyanohydrin","(ii) Acetal","(iii) Semicarbazone"),("(iv) Aldol","(v) Hemiacetal","(vi) Oxime"),("(vii) Ketal","(vii) Imine","(ix) 2,4-DNP-derivative"),("(x) Schiff’s base",,):}`

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction. {:("(i) Methanal"," (ii) 2-Methylpentanal"," (iii) Benzaldehyde"),("(iv) Benzophenone"," (v) Cyclohexanone"," (vi) 1-Phenylpropanone"),("(vii) Phenylacetaldehyde"," (viii) Butan-1-ol"," (ix) 2,2-Dimethylbutanal"):}

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",):}

Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous. {:("(i) Tetra phosphorus decoxide "(P_(4)O_(10)),"(vii) Graphite"),("(ii) Ammonium phosphate "(NH_(4))_(3)PO_(4),"(viii) Brass"),("(iv) "SiC,"(ix) Rb"),("(iv) "I_(2),"(x) "LiBr),("(vi) Plastic ","(xi) Si"):}

Which of the following points lie on the axes? Also name the axis (i) (-5,-8) (ii) (0,13) (iii) (4,-2) (iv) (-2,0) (v) (0,-8) (vi) (7,0) (vii) (0,0)

Among the points given below some of the poitns lie on X-axis. Identify them (i) (0,5) (ii) (0,0) (iii) (3,0) (iv) (-5,0) (v) (-2,-3) (vi) (-6,0) (vii) (0,a) (viii) (b,0)

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"):}

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 quadrant in which the following points lie ? (i) (-2,3) (ii) (5,-3) (iii) (4,2) (iv) (-7,-6) (v) (0,8) (vi) (3,0) (vii) (-4,0) (viii) (0,-6)

Which of the following expressions are polynomias ? Which are not? Give reasons. (i) 4x ^(2) + 5x -2 (ii) y ^(2) -8 (iii)5 (iv) 2x ^(2) + (3)/(x) -5 (v) sqrt3x ^(2) + 5y (vi 1/x + 1 (x ne 0) (vii) sqrtx (viii) 3 xyz