Problem 129
Match the vitamins given in Column-I with the deficiency disease they cause given in Column-II. Column-I Column-II (Vitamins) (Diseases) (A) Vitamin A (P) Pernicious anaemia (B) Vitamin \(\mathrm{B}_{12}\) (Q) Increased blood clotting time (C) Vitamin C (R) Xerophthalmia (D) Vitamin \(\mathrm{K}\) (S) Night blindness (T) Bleeding gums
Problem 130
Match the polymers given in Column-I with the preferred mode of polymerisation followed by their monomers. Column-I Column-II (A) Nylon-6,6 (P) Free radical polymerisation (B) \(\mathrm{PVC}\) (Q) Ziegler-Natta polymerisation or coordination polymerisation (C) HDP (R) Anionic polymerisation (S) Condensation polymerisation
Problem 131
Match the polymers given in Column-I with the type of linkage present in them given in Column-II. Column-I Column-II (A) Terylene (P) Glycosidic linkage (B) Nylon (Q) Ester linkage (C) Cellulose (R) Phosphodiester linkage (D) Protein (S) Amide linkage (E) RNA
Problem 134
Match the polymers given in Column-I with their main applications given in Column-II. Column-I Column-II (A) Bakelite (P) Unbreakable crockery (B) Low density polythene (Q) Non-stick cookwares (C) Melamine-formaldehyde resin (R) Packaging material for shock absorbance (D) Nylon-6 (S) Electrical switches (E) Polytetrafluoroethane (T) Squeeze bottles (F) Polystyrene (U) Tyre, cords
Problem 135
Column-I Column-II (Polymer) (Monomer) (A) Glyptal (P) \(\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}_{2}\) (B) Terylene (Q) \(\mathrm{Ph}-\mathrm{OH}\) (C) Novalac (R) \(\mathrm{CH}_{2}(\mathrm{OH}) \mathrm{CH}_{2}(\mathrm{OH})\) (D) Buna-S (S) HCHO (T) 1,3 -butadiene
Problem 136
Match the activity given in Column-I with the type of pollution created by it given in Column-Il. Column-I Column-II (Activity) (Effect) (A) Releasing gases to the atmosphere after (P) Water pollution burning waste material containing sulphur. (B) Using carbamates as pesticides damage to (Q) Photochemical smog plant life, corrosion tobuilding material, induce breathing problems, water pollution (C) Using synthetic detergents for washing clothes (R) Damaging ozone layer (D) Releasing gases produced by automobiles and (S) May cause nerve diseases factories in the atmosphere. (E) Using chlorofluorocarbon compounds (T) Classical smog, acid rain, water pollution, for cleaning computer parts induce breathing problems, damage to buildings, corrosion of metals.
Problem 137
Match the type of mixture of compounds in Column-I with the technique of separation/purification given in Column-II. Column-I Column-II (A) Two solids which have different solubilities in (P) Steam distillation a solvent and which do not undergo reaction when dissolved in it. (B) Liquid that decomposes at its boiling point (C) Steam volatile liquid (Q) Fractional distillation (D) Twoliquids which have boiling points close (R) Simple distillation to each other. (S) Distillation under reduced pressure (E) Two liquids with large difference in boiling points (T) Crystallisation
Problem 138
Column-I Column-II (Pair of compounds) (Can be distinguished by) (A) \(\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}_{2}\) and \(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{CH}\) (P) \(\mathrm{NaNH}_{2}\) (B) \(\mathrm{CH}_{3}-\mathrm{CH}_{3}\) and \(\mathrm{CH}_{3}-\mathrm{CH} \equiv \mathrm{CH}\) (Q) \(\mathrm{Br}_{2} / \mathrm{H}_{2} \mathrm{O}\) (C) \(\mathrm{CH}_{3} \mathrm{COOH}\) and \(\mathrm{CH}_{3}-\mathrm{CH}(\mathrm{OH})-\mathrm{CH}_{3}\) (R) Aq. \(\mathrm{NaHCO}_{3}\) (D) \(\mathrm{CH}_{3}-\mathrm{OH}\) and \(\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}_{2}\) (S) Na metal (T) Aq. \(\mathrm{NaOH}\)
Problem 139
Column-I Column-II (Pair of compounds) (Can be distinguished by) (A) \(\mathrm{CH}_{3}-\mathrm{CHO}\) and \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) (P) \(\quad \mathrm{AgNO}_{3}\) (B) \(\mathrm{CH}_{3}-\mathrm{CH}(\mathrm{OH})-\mathrm{CH}_{3}\) and \(\mathrm{Ph}-\mathrm{CHO}\) (Q) Iodoform test (C) \(\mathrm{CH}_{3} \mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{2} \mathrm{CH}_{3}\) and \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) (R) Fehling solution (D) \(\mathrm{CH}_{3}-\mathrm{CH}_{2} \mathrm{OH}\) and \(\mathrm{HCHO}\) (S) \(\quad 2,4-\mathrm{DNP}\) (T) \(\mathrm{NaHSO}_{3}\)
Problem 140
Column-I Column-II (Reaction) (Statement) (P) One of the products used to form Novalac (Q) One of the products used to form Melamine (R) One of the products used to form Bakelite (S) One of the products used to form Dacron (T) One of the products is soluble in ay \(\mathrm{NaOH}\)
