On chemical analysis, a bottle cork is found to contain primarily
proteins
carbohydrates
tannins
lipids
Correct Answer :
B. carbohydrates
Related Questions
In the process of purification of water for town supply, the substance used to remove bad smell and colour from water is
charcoal
bleaching powder
chlorine
carbolic acid
A burning substance which continues to burn in a jar of carbon dioxide is
zinc
red phosphorus
magnesium
sulphur
The rate of setting of cement is slowed down by the addition of
quicklime
gypsum
soda lime
bleaching powder
Rusting of iron cannot be prevented by
painting
applying alkaline phosphate
applying soap water
galvanising
Even as early as 3000 BC glass was known to the
Europeans
Egyptians
Asians
Americans
Which of the following is a halogen?
Radon
Astatine
Cesium
Ruthenium
High temperature thermometers use
sodium amalgam
an alloy of sodium and potassium
silver amalgam
calcium amalgam
A non-metal which is a good conductor or heat and electricity is
iodine
sulphur
graphite
phosphorus
Temporary hardness is due to the presence of
calcium carbonate
calcium bicarbonate
magnesium sulphate
calcium sulphate
Riboflavin deficiency causes
tongue inflammation
pellagra
night blindness
anaemia
Compounds containing only carbon and hydrogen are called
carbohydrates
carbides
hydrocarbons
carbonyls
A metal which occurs 'free' in nature is
gold
zinc
tin
molybdenum
What is 'oxygen mixture'?
A mixture of potassium nitrate and carbon
A mixture of ammonium chloride and sodium nitrate
A mixture of potassium chlorate and manganese dioxide
A mixture of ammonium nitrate and charcoal
The form of carbon used in decolourising sugar solution is
wood charcoal
animal charcoal
coconut charcoal
lamp black
Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?
Silicon
Oxygen
Carbon
Calcium
Cupellation is used in the purification of
Lead
Tin
Silver
Gold
Laughing gas is
nitric oxide
nitrogen peroxide
nitrogen pentoxide
nitrous oxide
Which one of the following metals is used to extract another metal?
Lead
Tin
Zinc
Aluminium
A common rodenticide is (Rat Poison)
malathion
parathion
zinc phosphide
diuron
A non-metal which is a good conductor of electricity is
graphite
phosphorus
sulphur
iodine
The fertilizer which has the largest percentage of nitrogen is
urea
ammonium nitrate
ammonium sulphate
calcium cyanamide
The depletion of the ozone layer in the upper atmosphere is due to -extensive use of
dichloro-phenoxy-acetic acid
superphosphate of lime
chlorofluorocarbons (CFC)
dichloro-diphenyl-trichloro-ethane
Acute diabetes patients smell of
acetone
ether
ethyl alcohol
methyl alcohol
The non-metal which is electropositive is
chlorine
nitrogen
sulphur
hydrogen
One of the ingredients of the paste on the side of a match box is
phosphorus pentaoxide
phosphorus trichloride
phosphorus trisulphide
phosphorus trioxide
Lunar caustic is
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
Which one of the following is used for dry cleaning?
Kerosene oil
Diesel oil
Lubricating oil
Petroleum ether
Boiler scales' contain
calcium carbonate
magnesium bicarbonate
calcium sulphate
magnesium sulphate
Sulphur is readily soluble in
Water
Alcohol
Carbon-di-sulphide
Sodium chloride solution
Which of the following is not a food material?
silicate
protein
fat
carbohydrate