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n, , w, , 11. A paint contains, , Thinners are 4, , PAINTS AND VARNISHES, ting an iron grill is, , , , , , , , , , he main purpose of pain, , él to protect it from corrosion, (0 toda () to reduce its life and durabili, , 1 cosa ae. resistance (d) to improve its beauty and tesa anh, (a) high covering power, (c) reflecting property, A paint does not constitute of, (a) binder, , ko) gypsum, , (b) brushing characteristic light, Vf all of the above, , (b) pigment, ; (d) drying oil, A mixture of drying oil, resins and volatile solvent is known as, , (a) polymer (b) plastic, , (C) paint Udy varnish, , The composition of paint that provides the hiding power is ......, fey pigment (b) solvent, , (o) vehicle (d) none of these, , The paint additives that provide flexibility in coating and also prevent separation of, components are ......, , (a) fillers ler plasticizers, , (co) thinners (d) pigments, , Varnish is used to give ....-- ~, Vf) transparent finish (b) red cour finish, , () opaque finish vg fire resistant finish, , Non-volatile, film-forming constituent of a paint is called ......, , (a) drier be ae, , (Q) thinner le rying, , White eae in pain i oc, , (a) thinner Pe, , igments, te ded to paint to ......, , i lity, improve arying qua ;, ump a consistency (d) provide water proofness, , (b) reduce the cost, (a), , reduce, , 'b) drying oil only, . ly (, (a) pigment on, , (¢) pigment * drier only ® all of these
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12, , 13., , 14., , 29,, , 16., , n7;, , 18., , 19),, , 20., , , , LUE ay vO ey TOIT, —————_———— ee", , Opacity and desired colour to paint are provided by ......, (a) extenders (b) driers, VAT pigments (d) thinners, Drying oils supply to paint film ......, (a) main film-forming constituent (b) medium or vehicle, (c) water proofness dy all of these, , Spirit varnish is a solution of, , (a) oil + pigment (b) resin + pigment, vey resin + solvent (d) pigment + drier, A solution of shellac in alcohol is an example of, (a) oil varnish, , (b) paint, ey spirit varnish (d) none of these, Both paint and oil varnish contain common constituent ......, (a) thinner (b) pigment, drying oil (d) extender, Paint is a mechanical dispersion mixture of one or more ...... in a vehicle., (a) resin (b) polymer, ey pigment (d) monomer, Driers of paints are ......, (a) pigments (b) polymers, ug catalysts (d) none of the above, Following is not a thinner ......, 4d) acetone (b) terpentine, (©) spirit 4 (d) castor oil, Varnish ts a homogeneous colloidal dispersion solution Ofieeen in oil or thinner or in bot, (a) pigment bY resin, (©) salt (d) gypsum, , , , INSULATORS], , The materials which are used to prevent the flow of heat are knownas ......, slay insulators (6) conductors, , (c) semiconductors (@) paints, , Which one is not an insulating material ?, , (a) glass wool (b) thermocole, (c) asbestos UG iron
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wR, , so, , 10., , 12., , 13!, , _ Acopolymer is formed by the union of two or more, , , , Which are the types of polymerisation ?, , oy addition and condensation (b) evaporation and addition, (Q) condensation and malleability (d) none of the abave, On the basis of structure, polymers can be classified as ......, (a) copolymer, homopolymer 46) linear and cross link, , () thermosoftening and thermosetting (d) none of these, Which one is a type of thermosetting polymer ?, , (a) polyethylene (b) PVC, , (©) teflon - a nylon, , Which one is a type of thermosoftening polymer ?, , (a) nylon (b) bakelite, , (C) urea formaldehyde vd teflon, , The polymer which is formed by joining of two different monomers is called as ..., fa) homopolymer (b) heteropolymer, , (C) copolymer (d) both (b) and (), , Structural units of a high polymer are called ........., , (a) fibers Nby- monomers, , (©) thermo units (da) fabrics, , A thermoplastic is formed by the phenomenon of, (a) chlorination, , (b) condensation polymerisation, fe) addition polymerisation (d) distillation, , (a) molecules of same monomers by the.elimination of small molecules like water, , (6) monomer molecules in a chain without the elimination of water, @® monomer molecules with the elimination of small molecules like water, , (d) all of the above, , Phenol-formaldehyde resin is commercially known as, , (a) PVC (b) elastomer, (0) teflon “() bakelite, Polymer commonly used for making fibre/cloth is ......, (a) rubber (b) Pvc, fe nylon (d) bakelite, Bakelite is prepared by the condensation of ......, (a) benzene and formaldehyde “7 phenol and formaldehyde, (¢) phenol and acetaldehyde (2) phenol and chloroform, A high molecular weight material that can be moulded in any desired shape is ......, (a) graphite “Of polymer, , (c) jelly (©) ‘grease
