The pH or pure water is nearly 7.0 It will increase on the addition or
hydrochloric acid
ammonia
cane sugar
common salt
Correct Answer :
B. ammonia
Related Questions
The gas evolved when ammonium nitrate is heated is
nitrogen
nitric oxide
nitrogen peroxide
nitrous oxide
Triple Antigen treatment for children is to ward off
whooping cough
tetanus
diphtheria
All the three
Which of the following types of water gives lather easily with soap?
Hard water
Heavy water
Soft water
Both (a) and (b)
The substance most abundantly found in sea water is
magnesium chloride
sodium chloride
calcium sulphate
potassium chloride
BHC is a
Rodenticide
Herbicide
Pesticide
Fungicide
Which or the following is not a constituent or gun powder?
Ammonium nitrate
Nitre
Charcoal powder
Sulphur
A common rodenticide is (Rat Poison)
malathion
parathion
zinc phosphide
diuron
The sugar which is used in silvering mirrors is
sucrose
maltose
glucose
fructose
Which of the following is used as an illuminant?
Gasoline
Benzoline
Kerosene
Petroleum ether
Temporary hardness is due to the presence of
calcium carbonate
calcium bicarbonate
magnesium sulphate
calcium sulphate
Which of the following is called 'the King of Chemicals?
Nitric acid
Hydrochloric acid
Silver nitrate
Sulphuric acid
The noble gas which is present in microscopic quantities in air is
xenon
krypton
argon
helium
Biogas is obtained during
decomposition of petrol
fermentation of animal and plant waste
destructive distillation of coal
electrolysis of water
Graphite la a good conductor of electricity because
it is an allotrope of carbon
it gives CO2 on heating
it contains free electrons
it is oxidised to graphitic acid
Jeweller's rouge is
magnetic oxide of iron
ferric oxide
ferrous oxide
ferrous carbonate
Solid carbon dioxide is used
as a drying agent
as a refrigerant
as an antiseptic
as a bleaching agent
Flint glass contains
potassium and lead silicates
zinc and barium borosilicates
potassium and calcium silicates
sodium and calcium silicates
Which of the following is not a physical change?
Distillation of water
Action of heat on potassium chlorate
Powdering of glass
Burning of an electric lamp
The name rubber was given by
Lavoisier
Priestley
Dalton
Avogadro
The form of carbon used in decolourising sugar solution is
wood charcoal
animal charcoal
coconut charcoal
lamp black
Ozone occurs in the upper layers of air in the atmosphere because
it is lighter than air
in the lower layers it becomes unstable
ultra-violet light is present only in the upper layers
it mixes freely with O2 in the upper layers
Rooms in places infected by plague are disinfected using
bleaching powder
iodoform
sulphur dioxide
chlorine
A substance used as a fire-extinguisher under the trade name of Pyrene is
carbon dioxide
chloroform
carbon tetrachloride
bleaching powder
Carbogen is used in
CO2 poisoning
CO poisoning
phosgene poisoning
anesthesia
Diamonds are weighed in
grams
pounds
carats
tons
Annealing of glass is carried out by
rapid cooling
rapid heating
slow cooling
slow heating
Which one of the following metals is used to extract another metal?
Lead
Tin
Zinc
Aluminium
Which one of the following is not radioactive?
Astatine
Francium
Tritium
Zirconium
Copper is purified by
poling
tempering
calcination
galvanising
The compound which is both an antiseptic and a disinfectant is
phenol
iodoform
bleaching powder
blue vitriol