ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Naturally occurring lipids are called Fats protein Steroids None
2 Denaturation of protein means the structure of protein is disrupted, indicate which factor foes not denature protein Heating protein pH changes Oxidising agent Keeping pH 7.35
3 A polymer may be Homopolemer Co-polymer Terpolymer All of these
4 The temp. and pressure used for PVC polymerization is 10°C and 10 atm 20°C and 20 atm 52°C and 9 atm 100°C and 10 atm
5 Which of the following polymers is used for weather resistant paints Arcylic resins Polyvinyl acetate Polystyrene PVC
6 Nylon, 6,6 is a condensation polymer of Adipic acid and glycol Phthalic acid and glycol Adipic acid and hexaethylene diamine Pthalic acid and hexaethylene diamine
7 Which polymerization is free radical machanism based Addition Condensation Both a and b None
8 The polymers which can be re-softened again and again are caled Thermoplastic Thermosetting Both a and b None
9 One of the followings is not type of polymer Homopolymer Copolymer Heteropolymer Terpolymer
10 The temp. and pressure used for PVC polymerization is 10°C and 10 atm 20°C and 20 atm 52°C and 9 atm 100°C and 10 atm
11 The other name of cross linked polymers is Linear polymer Branched polymer Inter connected polymers None of these
12 Organic synthetic or man made polymers are plastics, rubber and fibre. Which is not a synthetic polymer Silk Polyester Polyvinyl chloride Nylon
13 In macromolecules DP stands for Dissociation parameter Dissociation polymer Degree of polymerization None of these
14 A polymer may be Linear Branched Cross linked All of these
15 Macromolecules or polymers are large molecules built up from small molecules called monomers. This hypothesis put forward by Schrodixger Standinger Lewis Newton
16 The chemical reactivity of glass is reduced by the use of Fluxes Formers Stabilizers None of these
17 Which of the following fertilizers is useful for paddy rice Ammonium nitrate Ammonium sulphate Urea Ammonium chloride
18 The most commonly and widely used nitrogen fertilizer in Pakistan is Urea Ammonium nitrate Ammonium sulphate Ammonium chloride
19 The natural fertilizers consist of Plants Animals Both plants and animals Microorganisms
20 The main source of natural fibre is Animal fibres Vegetables fibres Mineral fibres All of the above
21 The fibre which is made from vinylidine chloride polymer is called Rayon fibre Azlon fibre Acetate fibre Saran fibre
22 Macro-nutrients are required in quantities ranging from 5 kg - 200 kg 2 kg - 100 kg 1 kg - 50 kg 10 kg - 100 kg
23 Phosphorous helps the growth of Root Leave Stem Seed
24 Which woody raw material is used for the manufacture of paper pupl Cotton Bagasse Poplar Rice straw
25 Formation of PVC form vinyl chloride is an example of Substitution reaction Addition polymerization Condensational reaction Aldol condensation
26 Which of the following is commonly called polyamide Nylon Rayon Terylene Oridon
27 Which one of the following substances is a synthetic polyester Cotton Nylon Rayon Terylene
28 The formation of PVC from vinyl chloride is an example of Substitution reaction Addition polymerization Condensation polymerization Condensation reaction
29 A chemical inert and heat resistant plastic, that is made form tetrafluoroethlene, is called Teflon PVC Bakelite Polyamide
30 The potassium fertilizers are preferred for horticulture, tobacco and potatones, which of the following is popular potassium fertilizer Potassium oxide Potassium chloride Potassium sulphate Potassium nitrate
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