In photography, the compound or nitrogen used is
Potassium nitrate
Silver nitrate
Ammonium carbonate
Ammonium bicarbonate
Correct Answer :
B. Silver nitrate
Related Questions
Which of the following types of water gives lather easily with soap?
Hard water
Heavy water
Soft water
Both (a) and (b)
Which of the following is not a chemical change?
Burning of magnesium ribbon in air
Distillation of water
Heating of cane sugar
Setting of cement
Nylon is made from
terephthalic acid and ethylene glycol
hexamethylene diamine and adipic acid
cellulose nitrate
cellulose acetate
White lead is
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an acid salt
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Penicillin was discovered by
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Sir JJ Thomson
Dr Nessler
Sir John Russel
According to the modern Periodic Law, the properties of elements are periodic functions of their
valency
atomic mass
number of neutrons
atomic number
The function of nitrogen in air is
to make air a moderate supporter of combustion
to maintain the density of air constant
to prevent the hydrogen in air from exploding
to reduce the poisonous nature of ozone in air
Which of the following is a mixture?
Baking soda
Milk
Chloroform
Copper wire
A mixture of carbon monoxide and hydrogen is
coal gas
producer gas
water gas
gobar gas
Galvanising is coating Iron with
nickel
zinc
chromium
copper
Clark's method for removal of temporary hardness in water uses
calcium hydroxide
washing soda
calcium chloride
zeolite
The raw materials required for the manufacture of glass are
silica, sodium nitrate and soda ash
silica, limestone and sodium nitrate
silica, sodium oxide and limestone
silica, soda ash and limestone
The chemical name of aspirin is
acetamide phenol
malonyl urea
aminosalicylic acid
acetyl salicylic acid
In surgical operation, the anaesthetic commonly used nowadays is
iodoform
chloroform
nitrous oxide-ether mixture
chloroform-nitrous oxide mixture
An acid which is used as a preservative for pickles is
hydrochloric acid
citric acid
tartaric acid
acetic acid
Lead soaps are used in
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adhesive tapes
toilet powders
lubricants
When ants bite, they inject
glacial acetic acid
methanol
formic acid
stearic acid
The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as
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hardening
quenching
tempering
The neutron was discovered by
Chadwick
Madam Curie
Becquerel
Aston
Mortar contains cement and sand in the ratio of
1 : 1
1 : 2
2 : 3
1 : 3
Which of the following is used as an illuminant?
Gasoline
Benzoline
Kerosene
Petroleum ether
LSD is
an anaesthetic
a psychedelic drug
an antipyretic
an antibiotic
Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to
dehydration
oxidation
reduction
dehydrogenation
Alum is used
as an analgesic
in the purification of water
as a fertilizer
as a disinfectant
The compound of iron used in the manufacture of blue-black ink is
ferric chloride
ferric sulphate
ferric thiocyanate
ferrous sulphate
Copper is purified by
poling
tempering
calcination
galvanising
The compound used in photography is
ammonium dichromate
copper Sulphate
magnesium Sulphate
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The gas used in balloons in the place of hydrogen is
nitrogen
helium
neon
argon
The principle involved in dialysis, a treatment administered to patients with affected kidneys is
Cataphoresis
Osmosis
Dehydration
Diffusion
Which or the following gases is soluble in water and Is collected by the downward displacement or air?
Carbon dioxide
Sulphur dioxide
Ammonia
Hydrogen