Oxygen
Nitrogen
Hydrogen
Chlorine
C. Hydrogen
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
Aluminium
Silver
Copper
Magnesium
urea
methane
acetic acid
benzene
tongue inflammation
pellagra
night blindness
anaemia
Fe and C
Mn and C
Fe and Mn
Fe, Mn and C
Alexander Fleming
Sir JJ Thomson
Dr Nessler
Sir John Russel
Potassium nitrate
Silver nitrate
Ammonium carbonate
Ammonium bicarbonate
cotton
wool
cellulose
silk
quicklime
gypsum
soda lime
bleaching powder
sucrose
maltose
glucose
fructose
a definite shape but not volume
a definite volume and shape
a definite volume but not shape
neither definite volume nor shape
silica, sodium nitrate and soda ash
silica, limestone and sodium nitrate
silica, sodium oxide and limestone
silica, soda ash and limestone
they may appear better
they can resist the action of acids and alkalies
they lose their brittleness
they can withstand temperature shocks
neutrons
protons
protons and neutrons
protons and electrons
copper and tin
aluminium and magnesium
copper and zinc
copper, tin and zinc
Baking soda
Milk
Chloroform
Copper wire
P1V1T1 = P2 V2 T2
P1V1T2 = P2V2T1
P = P1 + P2 + P3
C =
sucrose
glucose
fructose
a mixture of glucose and fructose
cement an limestone
cement and sand
cement and gravel
cement, sand and gravel
273 K
0 K
273°C
-273°C
a deliquescent substance
an efflorescent substance
a hygroscopic substance
a dehydrating substance
calcium hydroxide
washing soda
calcium chloride
zeolite
n-heptane
n-octane
iso-heptane
iso-octane
sodium bicarbonate
sodium carbonate
carbonic acid
sodium hydroxide
calcium carbonate
calcium bicarbonate
magnesium sulphate
calcium sulphate
chlorine
mercury
water
iodine
the manufacture of explosives
the manufacture of dyes
refrigerators
the preparation of drugs
red phosphorus and oxygen
white phosphorus and oxygen
carbon monoxide and chlorine
carbon dioxide and chlorine
German silver
solder
magnalium
bell metal
aldehydes
alkenes
amino acids
alkynes