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WorksheetsCarbon dioxide and Carbon Monoxide
Total questions: 25
Worksheet time: 25mins
What is the formula of limestone?
CaCO3
MgCO3
MgCO3.CaCO3
Ca(HCO3)2
What is the formula of doloomite?
CaCO3
MgCO3
MgCO3.CaCO3
Ca(HCO3)2
Name the scientist who gave CO2 the name acid carbonique.
Joseph Black
Henry Boyle
Van Helmont
Antoine Lavosier
CH4 + 2 O2 -------> _____ + _____
CO2 + H2O
CO2 + 2H2O
2CO2 + 2H2O
CO + H2O
Which is the formula of baking soda?
CaCO3
NaHCO3
Ca(HCO3)2
CH3COOH
What is the name given to solid CO2?
Dry water
Dry ice
Wet Ice
Carbon dioxide's ice
During lab preparation of CO2 why dilute sulphuric acid is not used?
as it is a corrosive acid
as it is dehydrating
as it produces insoluble CaSO4
as it does not react with CaCO3
CuCO3 on heating------> ____ + ____
Cu + CO2
CuO + CO2
CuO + CO
Cu + CO
Which is the equation for lab preparation of carbon dioxide?
CaCO3 + HCl --> CaCl + CO2
CaCO3 + 2HCl --> CaCl2 + CO2
CaCO3 + 2HCl --> CaCl2 + H2O+ CO2
CaCO3 + HCl --> CaCl +H2O+ CO2
How is CO2 gas collected?
downward displacement of air
upward displacement of air
downward displacement of water
In a gas jar containing KOH
CO2 is _____ than air.
heavier
lighter
of equal density
may be lighter or heavier depending on reactants.
When marble chips react with dilute HCl, what do you observe?
colourless gas evolves with upleasant smell
brisk effervescence takes place
air bubbles are formed which rises up in air
solution turns milky
Carbon dioxide is a
combustible gas
supporter of combustion
nether a combustible gas nor a supporter of combustion
combustible gas but a non supporter of combustion
Aquatic plants perform photosynthesis using
CO2 present in air
O2 present in air
CO2 dissolved in water
O2 dissolved in water
Which of the following are called alkalis?
NaOH
KOH
NaOH and KOH both
Na2CO3
What is the formula of lime water?
KOH
NaOH
Ca(OH)2
Ca(HCO3)2
Name the fertilizer produced when CO2 is heated at 1500C with ammonia under pressure?
Washing soda
Baking Soda
Urea
soda water
A mixture of 5% CO2 and 95% O2 is called ____
artificial respiration
carbogen
carboxylhaemoglobin
fizzy aerated drinks
CO2 traps earth heat energy . This is called (a)
Ways by which CO2 is added to atmosphere is
Burning
Respiration
By decaying of dead plants and animals
All of these
Carbon monoxide burns in air with a (a) flame.
CO acts as a (a) agent in extraction of pure metals from its ores.
A mixture of metallic oxide is called (a)
When CO2 is passed through blue limus soloution it turns (a) due to acidic nature of CO2 gas.
Incomplete combustion of carbon produces
CO
CO2
O2
H2O
