Solid carbon dioxide is used
as a drying agent
as a refrigerant
as an antiseptic
as a bleaching agent
Correct Answer :
B. as a refrigerant
Related Questions
The modern system of symbols was evolved by
Dalton
Cavendish
Avogadro
Berzelius
The gas evolved when ammonium nitrate is heated is
nitrogen
nitric oxide
nitrogen peroxide
nitrous oxide
LSD is
an anaesthetic
a psychedelic drug
an antipyretic
an antibiotic
Lead soaps are used in
shaving creams
adhesive tapes
toilet powders
lubricants
PAS is a drug used In the treatment of
tuberculosis
cancer
typhoid
malaria
The compound or nitrogen used in dry cells is
ammonia
ammonium nitrate
ammonium chloride
ammonium nitrite
The atomic number of an element represents
number of neutrons in the nucleus
number of protons and neutrons in the nucleus
the valency of the element
number of protons in the nucleus
Cholesterol is
a carbohydrate
a protein
a lipid
a hormone
Mild steel contains
iron with very low percentage of carbon
iron with high percentage of carbon
iron and chromium
iron and manganese
The oldest known organic compound is
urea
methane
acetic acid
benzene
The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as
annealing
hardening
quenching
tempering
A metal which exhibits allotropy is
cobalt
tin
manganese
platinum
A mixture of ethyl alcohol and water can be separated by
evaporation
sublimation
using a separating funnel
fractional distillation
Marble is
calcium carbonate
sodium carbonate
magnesium sulphate
ferric chloride
The main constituent of gobar gas is
methane
nitrogen
carbondioxide
ethylene
A substance used both as an explosive and as a germicide is
phenol
TNT
picric acid
iodoform
Deficiency of iron causes
nervous disorders
heart diseases
anaemia
impairment of vision
The sugar which is used in silvering mirrors is
sucrose
maltose
glucose
fructose
Flint glass contains
potassium and lead silicates
zinc and barium borosilicates
potassium and calcium silicates
sodium and calcium silicates
Argyrol used as eye ointment is a solution of
hydrogen peroxide
silver nitrate
tincture iodine
m-cresol
Which of the following is a Bleaching agent?
Potassium chlorate
Hydrogen peroxide
Copper sulphate
Silver Nitrate
Calomel is
lead chloride
mercurous chloride
mercuric chloride
calcium sulphate
The commonest ore of aluminium is
cryolite
bauxite
malachite
azurite
Vinegar is the trade name for
chloroform
acetic acid
phenol
carbon tetrachloride
Plaster of Paris
contracts while setting
expands while setting
is highly volatile
does not suffer any changes in volume while setting
In the mouth, starch is converted into ______ by the action of saliva.
sucrose
glucose
fructose
mannose
The kinetic energy of gas molecules
is unaffected by temperature variations
decreases with increase of temperature
increases with decrease of temperature
increases with increase of temperature
An element which is preserved under water is
Sodium
red phosphorus
white phosphorus
sulphur
Isotopes differ in the number of
Protons
Neutrons
Electrons
Protons and electrons
The rate of setting of cement is slowed down by the addition of
quicklime
gypsum
soda lime
bleaching powder