The form of carbon used in decolourising sugar solution is
wood charcoal
animal charcoal
coconut charcoal
lamp black
Correct Answer :
B. animal charcoal
Related Questions
During fermentation, the by-product is
ethyl alcohol
methyl alcohol
carbon monoxide
carbon dioxide
A compound of carbon used as anaesthetic is
carbon disulphide
carbon tetrachloride
phosgene
chloroform
Marsh gas is
ethane
ethylene
acetylene
methane
Mortar contains cement and sand in the ratio of
1 : 1
1 : 2
2 : 3
1 : 3
The science which deals with the chemistry of life processes is known as
electrochemistry
physical chemistry
biochemistry
tinctorial chemistry
The foul odour of gasoline is due to
pyridine
hydrogen sulphide
cacodyl
carbylamines
Gasoline is obtained from crude petroleum by
fractional distillation
fractional crystallisation
sublimation
evaporation
Which of the following cannot be used for the preparation of soap?
oleic acid
acetic acid
palmitic acid
stearic acid
Which one of the following is used in dry cleaning of garments?
asphalt
naphtha
diesel oil
lubricating oil
The human body contains about
50% water
10% water
70% water
20% water
Washing soda is
sodium hydroxide
sodium carbonate
sodium bicarbonate
potassium chloride
The earliest known acid is
nitric acid
oxalic acid
carbonic acid
acetic acid
Temporary hardness is due to the presence of
calcium carbonate
calcium bicarbonate
magnesium sulphate
calcium sulphate
Setting of cement is due to
hydration
dehydration
dialysis
osmosis
________ is left behind after distillation of petroleum.
Arsenic
Barium
Benzene
Bitumen
Soda-water contains
sodium bicarbonate
sodium carbonate
carbonic acid
sodium hydroxide
The pH or pure water is nearly 7.0 It will increase on the addition or
hydrochloric acid
ammonia
cane sugar
common salt
The presence of dust particles in air serves
as a nucleus to condense water vapour resulting in rain
to maintain the average density of air
to minimise the inflammatory nature of oxygen
to protect the inhabitants of the earth from the effects of ultra violet rays.
Oxalic acid is used in the manufacture of
tincture iodine
paints
ink
aerated water
Vinegar is an aqueous solution of
oxalic acid
citric acid
acetic acid
hydrochloric acid
The Carbon dioxide is absorbed by
Palladium
NaCI
KOH
Dilute H2SO4
The formula for cane sugar is
C6H12O6
C2H5OH
C12H22O11
C7H8O
Harmful bacteria in drinking water cannot be destroyed by
chlorination
boiling
adding caustic soda
ozonisation
Gold dissolves in aqua regia due to the formation of
chloro auric acid
auric chloride
gold nitrate
aurous chloride
High temperature thermometers use
sodium amalgam
an alloy of sodium and potassium
silver amalgam
calcium amalgam
Fructose is also called
dextrose
fruit sugar
beet sugar
blood sugar
Which of the following is a communicable disease caused by viruses?
Cholera
Dysentery
Diabetes
Measles
Calomel is
lead chloride
mercurous chloride
mercuric chloride
calcium sulphate
Burglar proof safes are made of
Tungsten steel
Manganese steel
Chromium steel
Nickel steel
Consider the following statements: Hard water is not suitable for
1) drinking
2) washing clothes with soap
3) use in boilers
4) irrigating crops
Which of these statements are correct?
1 and 3
2 and 3
1, 2 and 4
1, 2, 3 and 4