PPSC Chemistry Part VI Applied/Industrial Chemistry Online Test With Answers

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PPSC Chemistry Part VI Applied/Industrial Chemistry Online Test

Sr. # Questions Answers Choice
1 For quality control of Portland cement, the test essentially done is. Setting time Soundness Tensile strength All
2 Which of the following is NOT true 7 ceramic materials are. Hard, have high densities high compressive strength and very good thermal resistance and strength at higher temperature Silicon Hard, have low densities high compressive strength and very good thermal resistance and strength at higher temperature. Hard, have low densities low compressive strength and very good thermal resistance and strength at higher temperature. Hard, have low densities' high compressive strength and very good thermal resistance and strength at higher temperature.
3 The different types of glass are. A- glass, C-Glass, E-Glass and S-Glass A-Glass, B-Glass, E-Glass, S-Glass AR -Glass, C-Glass, E-Glass and S -Glass A-B Glass
4 Rotary spinning process is used to produce Glass wool Optical fibre Glass marble None of above
5 The main constituent of glass is. Silica Silicon Magnesia Alumina
6 Which of the following glass transmits the maximum light. Serrated glass Clear glass Milk glass Opalescent glass
7 Glass industry requires soda ash with Solids density 1.91 and bulk density 1.0 Solids density 1.86 and bulk density 0.6 Solid density 1.80 and bulk density 0.58 All of above
8 Cement containing higher percentage of gypsum than required. Sets slowly Sets repidly <sub>Does not set at all</sub> Has no effect
9 The composition of mixture of clay and lime stone in the raw for cement material is. 75% lime stone and 25% clay 25% lime stone and 75% clay 15% lime stone and 55% clay 30% limes stone and 79% clay
10 What is clinker. Roasted calcareous material Roasted argillaceous material Roasted calcareous and argillaceous material Roasted gypsum
11 Cement is a mixture of Clay and clinker Clay limestone and gypsum Limestone and gypsum Binder
12 Commercial detergents contain mainly ___________ RCOON RONa RSNa All above
13 Washing soap can be prepared by saponification with alkali of _____ of the following oil. Rose oil Paraffin oil Groundnut oil Coconut oil
14 Fats and oil are_____________ Acids Alcohols Salts Base
15 ___________ surfactants perform well over a wide range of water hardness and pH. Anionic Cationic Nonionic Neutral
16 Turpentine is obtained from._______________ Oak tree Pine tree Birch tree Lemon tree
17 Hydrolytic reaction of fat with caustic soda is known as ______ Esterification Saponification Acetylation Carboxylation
18 ________is best in its cleaning action. Soap Detergents Surfactant None of these
19 The soap and detergent are source of organic pollutants like. Glycerol Polyphosphates Sulphonated hydrocarbons All of these
20 What is caustic potash NaOH KOH NaCl KCl
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