Certificate In Ethanol Production Unit [First Generation] /30 0 Your Examination is Complete ! Certificate In Ethanol Production Unit [First Generation]Online Examination Detail: Duration- 60 minutes. Number of Questions- 30. (Multiple Choice Questions). Maximum Marks- 100, Passing Marks- 40%. There is no negative marking. Candidate Details NameEmailPhone Number 1 / 301. Which is denatured spirit? A. Ethanol only B. Ethanol and methanol (50%) C. Ethanol and methanol (5%) D. Methanol only 2 / 302. The general formula for alcohol is CnH2n+1 OH. What is the value of ‘n’ for ethanol? A. 1 B. 3 C. 2 D. 5 3 / 303. Which enzyme is used to hydrolyse starch to maltose to manufacture ethanol by fermentation? A. Diastase B. Alpha-Amylase C. Lipase D. Beta-Amylase 4 / 304. The fermenter can be sterilized by- A. Keeping it in the oven B. Steam under pressure C. Boiling D. All of these 5 / 305. The most stable conformer of 2-fluoro ethanol is A. Partially eclipsed B. Fully eclipsed C. Gauche D. Anti 6 / 306. Soaps are formed by saponification of- A. Alcohols B. Glycosides C. Simple esters D. Carboxylic acids 7 / 307. After fermentation, ethanol is recovered by- A. Centrifugation B. Distillation C. Separating funnel D. Filtration 8 / 308. Which of the following microorganisms help in the ethanol production? A. Saccharomyces cerevisiae B. Zygoma as mobiles C. Saccharomyces ovarium D. All of these 9 / 309. High ethanol concentration- A. Promotes yeast growth B. Inhibits yeast growth C. Promotes bacterial growth D. Inhibits bacterial growth 10 / 3010. Which of the following is used to oxidise ethanol to ethanoic acid? A. Alkaline KMnO4 B. Conc. H2SO4 C. Acidified K2Cr2O7 D. All of above 11 / 3011. Methylated spirits is a mixture of- A. 98% ethanol +2% methanol B. 95% ethanol + 5% methanol C. 95% methanol + 5% methanol D. 98% methanol +2% ethanol 12 / 3012. In order to get ethanol from formaldehyde, which Grignard reagent is used? A. Ethyl magnesium bromide B. Methyl magnesium bromide C. Ethyl magnesium chloride D. Propyl magnesium bromide 13 / 3013. The byproduct of soap is- A. Isoprene B. Glycerol C. Butene D. Ethylene glycol 14 / 3014. What are different substrates used for ethanol production? A. Starch containing substrate B. Juices from sugarcane or molasses or sugar beet C. Waste product from wood or processed wood D. All of the above 15 / 3015. The substnace not responsible for the hardness of water is- A. Sodium nitrate B. Calcium hydrogen carbonate C. Calcium carbonate D. Magnesium carbonate 16 / 3016. What is mash made up of in the manufacture of ethanol from molasses? A. Ammonium nitrate + Magnesium nitrate B. Ammonium nitrate + Magnesium nitrate + Phosphorous C. Ammonium sulphate + Magnesium sulphate D. Ammonium sulphate + Magnesium sulphate + Phosphorous 17 / 3017. Yeast is used in the production of- A. Ethyl alcohol B. Acetic acid C. Cheese D. Curd 18 / 3018. Ethanol is produced by- A. Continuous fermentation B. Batch fermantation C. Both (a) and (b) D. None of these 19 / 3019. In ethanol, which of the following functional group is present? A. -O- B. -OH C. -COOH D. -CHO 20 / 3020. What are the fermentation conditions for the ethanol production? A. pH 6; temperature 35°C B. pH 5; temperature 35°C C. pH 6; temperature 30°C D. pH 5; temperature 30°C 21 / 3021. An isomer of ethanol is- A. Acetone B. Methanol C. Diethyl ether D. 1-methoxymethane 22 / 3022. Which among the following methods cannot be used for the manufacture of ethanol? A. From fermentation of molasses B. From lignocelluloses biomass C. Catalytic hydrogenation of ethylene D. From microorganisms 23 / 3023. Ethanol is - A. Primary alcohol B. Secondary alcohol C. Tertiary alcohol D. Quaternary alcohol 24 / 3024. After the fermentation is over, ethanol is recovered by- A. Centrifugation B. Distillation C. Filtration D. Cell disintegration 25 / 3025. How is air supply to the fermenter sterilized? A. By heat filtration B. Filtration through fibrous material C. Filtration through granular material D. All of these 26 / 3026. Which of the following will have the least solubility in water? A. Methanol B. Ethanol C. Isopropyl alcohol D. Tertiary butyl alcohol 27 / 3027. Which of the following can be used for the denaturation of ethyl alcohol? A. Methyl alcohol B. Pyridines C. Copper sulphate D. All of above 28 / 3028. The pH of molasses solution in the manufacture of ethanol should be __________ A. 1-2 B. 2-3 C. 7-9 D. 4-5 29 / 3029. Alcohols are isomeric with _____. A. Acids B. Ethers C. Esters D. Aldehydes 30 / 3030. When ethanol reacts with active metals, what is formed? A. Metal oxide B. Metal Alkoxide C. Metal hydroxide D. Metal carbonate Exit
