Worksheetscarbon and its compounds
Total questions: 15
Worksheet time: 13mins
which acid is used for the laboratory preparation of carbon monoxide
hydrochloric acid
concentrated sulphuric acid
formic acid
acetic acid
SODIUM OXIDE + CARBON DIOXIDE-->
(a)
a nitrogenous fertilizer obtained by the reaction between carbon dioxide and ammonia is-------
(a)
both CO2 and SO2 turns lime water milky
true
false
diamond is a crystalline allotrope of carbon built from a hexagonal unit
true
false
write a balanced molecular equation of the given word equation
magnesium + carbon dioxide --> magnesium oxide + carbon
Mg + CO2 --> 2MgO + C
2Mg + CO2 --> 2MgO + C
2Mg + CO2 --> Mg(OH)2 + 2C
2Mg + 2CO2 --> 2MgO + 2C
in the laboratory preparation of carbon monoxide concentrated sulphuric acid is used as
reducing agent
oxidising agent
dehydrating agent
which of the following statement is not true about carbon dioxide gas
fairly soluble in water
slightly acidic in nature
reacts with heated coke to produce carbon monoxide gas
reacts with calcium hydroxide and produce calcium oxide
amorphous allotrope of carbon which is used as a reducing agent in iron production is------
(a)
which of the following statement is true
diamond is a good conductor of electricity
graphite is a bad conductor of heat
in diamond, there is no free electron because each carbon atom is connected to 4 carbon atoms
in graphite, there is a free-electron because each carbon atom is connected to 4 carbon atoms
balance the given equation
Fe2O3 + C = Fe + CO
Fe2O3 + C = 2Fe + 3CO
Fe2O3 + 3C = 2Fe + CO
Fe2O3 + 3C = Fe + 3CO
Fe2O3 + 3C = 2Fe + 3CO
WHICH OF THE FOLLOWING STATEMENT IS NOT TRUE ABOUT WOOD CHARCOAL
wood charcoal has a very large surface area hence it can adsorb large volume of gases
wood charcoal can be converted into activated charcoal by passing carbon dioxide over heated wood charcoal
wood charcoal is a good reducing agent
wood charcoal is a good decolourising agent
1.write a balanced chemical equation of the given reaction
a) CO2 is passed into lime water
the product formed on passing excess CO2 to lime water is
CaCO3
CaO
Ca(HCO3)2
CO
carbon monoxide is a poisonous gas because
it reacts with hydrogen gas and produce methanol
it is colour less
it prevent haemoglobin from taking up oxygen
it is not soluble in water
