The purest form of carbon is
animal charcoal
coal
wood charcoal
sugar charcoal
Correct Answer :
D. sugar charcoal
Related Questions
The scientist who synthesised the first organic compound (urea) in the laboratory was
Wohler
Dalton
Lavoisier
Fischer
Calomel is
lead chloride
mercurous chloride
mercuric chloride
calcium sulphate
Dry Ice is
solid carbon dioxide
liquid oxygen
liquid hydrogen
liquid. Chlorine
Which of the following is not a metal?
Lithium
Helium
Sodium
Cobalt
Which one of the following gases is extremely soluble in water?
Carbon dioxide
Ammonia
Chlorine
Hydrogen sulphide
In photography, the compound or nitrogen used is
Potassium nitrate
Silver nitrate
Ammonium carbonate
Ammonium bicarbonate
Which of the following is not an alloy of copper?
Bronze
Brass
Solder
Gun metal
Compounds containing only carbon and hydrogen are called
carbohydrates
carbides
hydrocarbons
carbonyls
Cupellation is used in the purification of
Lead
Tin
Silver
Gold
Which of the following process involves removal of the elements of water?
Hydrolysis
Hydrogenation
Dehydration
Dehydrogenation
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.
Which of the following can absorb gases quickly?
Activated charcoal
Anthracite coal
Diamond
Graphite
The percentage of silver in German silver is
ten
twenty
zero
fifty
Cholesterol is
a carbohydrate
a protein
a lipid
a hormone
On chemical analysis, a bottle cork is found to contain primarily
proteins
carbohydrates
tannins
lipids
Deficiency of iron causes
nervous disorders
heart diseases
anaemia
impairment of vision
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
The chemical name of aspirin is
acetamide phenol
malonyl urea
aminosalicylic acid
acetyl salicylic acid
Which of the following is a Bleaching agent?
Potassium chlorate
Hydrogen peroxide
Copper sulphate
Silver Nitrate
Vinegar is the trade name for
chloroform
acetic acid
phenol
carbon tetrachloride
Which of the following is not a chemical change?
Rusting of iron
Burning of magnesium
Sublimation of iodine
Electrolysis of water
Tincture iodine is
a disinfectant
an analgesic
a hypnotic
a dye
Which one of the following is used for dry cleaning?
Kerosene oil
Diesel oil
Lubricating oil
Petroleum ether
Which of the following statements regarding natural radioactivity is true?
It is spontaneous disintegration of atoms
It is induced by bombardment with projectiles
It is transmutation of atoms with projectiles
It is dependent on temperature
Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to
dehydration
oxidation
reduction
dehydrogenation
The Combined Gas Law equation is
P1V1T1 = P2 V2 T2
P1V1T2 = P2V2T1
P = P1 + P2 + P3
C =
An acid which is used as a preservative for pickles is
hydrochloric acid
citric acid
tartaric acid
acetic acid
Grape sugar is another name for
glucose
fructose
sucrose
maltose
The iron salt used in blue prints is
ferric sulphate
ferric oxalate
ferric nitrate
ferric chloride
Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
three
four
one
five