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1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q41 ⇒ Coke oven gas consists mainly of H2, & CH4 [other wrong options] [Discuss in forum] CO, & CO2 H2, & CO CH4, & CO |
Q42 ⇒ Hydrolysis of sugar is called inversion [other wrong options] [Discuss in forum] hydration esterification none of these |
Q43 ⇒ Na2CO3.10H2O is called washing soda [other wrong options] [Discuss in forum] soda ash slaked lime quicklime |
Q44 ⇒ High purity nitrogen is used in both (a) & (b). [other wrong options] [Discuss in forum] making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils. fire fighting purposes. neither (a) nor (b). |
Q45 ⇒ Hydrazine is used in water treatment for the removal of dissolved oxygen [other wrong options] [Discuss in forum] colloidal impurities turbidity chlorinous taste |
Q46 ⇒ Dechlorination of treated water is necessary to remove chlorinous taste. [other wrong options] [Discuss in forum] remove residual turbidity. reduce the bacterial load on filter. control taste and odour. |
Q47 ⇒ Plasticisers are added to synthetic plastics to all (a), (b) and (c). [other wrong options] [Discuss in forum] impart flexibility. improve workability during fabrication. develop new improved properties not present in the original resins. |
Q48 ⇒ Reaction of calcium carbide with water produces a gas, which is used both (a) & (b). [other wrong options] [Discuss in forum] as an illuminant. for metal cutting/welding. neither (a) nor (b). |
Q49 ⇒ Presence of H2S in raw water (to be chlorinated) results in the increased dosage of chlorine to provide a disinfecting residual in the water. [other wrong options] [Discuss in forum] reduced softening capacity of zeolite. easy removal of its hardness. none of these. |
Q50 ⇒ Silicone is a/an inorganic polymer [other wrong options] [Discuss in forum] thermoplastic monomer none of these |
Q51 ⇒ Which one of the following is not likely to be a constituent of vegetable oils ? Citric acid [other wrong options] [Discuss in forum] Oleic acid Stearic acid Glycerol |
Q52 ⇒ Process conditions in fermentator used for production of penicillin is 25°C, 2 atm. [other wrong options] [Discuss in forum] 50°C, l0 atm. 30°C, 200 mm Hg (absolute). 90°C, 45 atm. |
Q53 ⇒ Fermentator temperature during production of alcohol from molasses is around __________ °C. 30 [other wrong options] [Discuss in forum] 5 150 300 |
Q54 ⇒ Thermal pyrolysis of ethylene dichloride produces vinyl chloride [other wrong options] [Discuss in forum] trichloroethylene ethanol amine ethylene oxide |
Q55 ⇒ The main product of high temperature carbonisation of coal is coke [other wrong options] [Discuss in forum] ammonia tar phenol |
Q56 ⇒ Bio-degradable detergents can be readily oxidised. [other wrong options] [Discuss in forum] pose problem in sewerage plant. have an isoparaffinic structure. should not be used as it spoils the cloth. |
Q57 ⇒ Main constituent of limestone is CaCO3 [other wrong options] [Discuss in forum] MgCO3 Na2CO3 CaSO4 |
Q58 ⇒ Which is the most suitable dye for synthetic fibres ? Acid dye [other wrong options] [Discuss in forum] Azoic dye Pigment dye Mordant dye |
Q59 ⇒ Percentage of alcohol in beer may be around __________ percent. 42774 [other wrong options] [Discuss in forum] 18-23 27-32 42739 |
Q60 ⇒ Naphthols are derivates of naphthalene [other wrong options] [Discuss in forum] methyl amine phenol xylene |
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