Which of the following is not a supporter of combustion?
Oxygen
Air
Hydrogen
Chlorine
Correct Answer :
C. Hydrogen
Related Questions
The formula for cane sugar is
C6H12O6
C2H5OH
C12H22O11
C7H8O
Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?
Silicon
Oxygen
Carbon
Calcium
The main constituent of gobar gas is
methane
nitrogen
carbondioxide
ethylene
The term 'nucleons' apples to
neutrons
protons
protons and neutrons
protons and electrons
Chloroform used as anaesthetic should be preserved In the dark in tightly stoppered bottles because otherwise
it becomes coloured
it gets evaporated in air
it gets oxidised to phosgene
it gets decomposed to chloropicrin
The pH or pure water is nearly 7.0 It will increase on the addition or
hydrochloric acid
ammonia
cane sugar
common salt
A substance used as a fire-extinguisher under the trade name of Pyrene is
carbon dioxide
chloroform
carbon tetrachloride
bleaching powder
Rayon la made from
cotton
wool
cellulose
silk
Burglar proof safes are made of
Tungsten steel
Manganese steel
Chromium steel
Nickel steel
Oil of winter green contains
acetone
ether
acetic acid
methyl salicylate
The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known as
annealing
hardening
quenching
tempering
Rooms in places infected by plague are disinfected using
bleaching powder
iodoform
sulphur dioxide
chlorine
Diamonds are weighed in
grams
pounds
carats
tons
Which of the following is not a metal?
Lithium
Helium
Sodium
Cobalt
Copper is purified by
poling
tempering
calcination
galvanising
The flux added in the blast furnace is
Limestone
FeO
SiO2
MgO
Solder is an alloy of
tin and copper
tin and lead
tin and zinc
tin, copper and zinc
High temperature thermometers use
sodium amalgam
an alloy of sodium and potassium
silver amalgam
calcium amalgam
Lead pencils contain
white lead
graphite
red lead
coke
Cholesterol is
a carbohydrate
a protein
a lipid
a hormone
The substance most abundantly found in sea water is
magnesium chloride
sodium chloride
calcium sulphate
potassium chloride
The foul odour of gasoline is due to
pyridine
hydrogen sulphide
cacodyl
carbylamines
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
The best specimen for drinking purposes is
rain water
river water
conductivity water
deep well water
Deficiency of iron causes
nervous disorders
heart diseases
anaemia
impairment of vision
A valuable by-product in the manufacture of soap is
stearic acid
sodium hydroxide
palmitic acid
glycerol
The compound of iron used in the manufacture of blue-black ink is
ferric chloride
ferric sulphate
ferric thiocyanate
ferrous sulphate
A common rodenticide is (Rat Poison)
malathion
parathion
zinc phosphide
diuron
Which of the following is an essential constituent of acids?
Oxygen
Nitrogen
Hydrogen
Chlorine
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