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WorksheetsX-SCI-L:11-P-2
Total questions: 10
Worksheet time: 5mins
Ethanol is manufactured in industries by the fermentation of ...................
molasses
carbohydrate
acid
ester
Molasses contain about ............of sucrose
10%
20%
30%
4%
Molasses is first diluted with water to bring down the concentration of sugar to about ..................
8-10%
2-4%
6-8%
5-7%
sucrose on hydrolysis in the presence of invertase enzyme it is converted into ................&..............
carbohydrate and acid
ester and ether
glucose and fructose
oil and fat
Ethanol (C2H5OH) is soluble in .........
water
acid
ether
benzene
Ethanoic acid (CH3COOH)is prepared by the oxidation of .......... in the presence of alkaline potassium permanganate
CH3OH -Methanol
C2H5OH-ethanol
CH4-methane
C2H6-ethane
Pick out the oxidising agent
potassium permanganate(KmnO4)
Sulphuric acid(H2SO4)
Nickel(Ni)
........... are sodium or potassium salts of some long chain carboxylic acids
sodium hydroxide
sodium carbonate
soap
•When combined with soap, hard water develops a thin layer (precipitates of the metal ions) called ..............
scum
dirt
deposit
Molecular formula of ethanoic acid is .................
CH3COOH
HCOOH
CH3CH2COOH
CH3CH2CH2COOH
