The reaction in which two or more substances combine to form a single compound is called …….reaction.
a) synthesis
b) displacement
c) double-displacement
d) combustion
Synthesis
reaction is also known as….reaction.
a) addition
b) displacement
c) double-displacement
d) combustion
Which of the following reaction takes place when carbon burns in air, combines with oxygen and produces carbon dioxide?
a) synthesis
b) displacement
c) double-displacement
d) combustion
Which of the following chemical equation shows synthesis reaction?
a) C(s) + O2(g) ------à CO2(g)
b) 2H2O2(l) -----à 2H2O(l) + O2(g)
c) 2MgO------à 2Mg + O2(s)
d) none of these
During electrical discharges in the atmosphere, nitrogen combines with……..to produce nitric oxide (NO).
a) water
b) hydrogen
c) oxygen
d) carbon
Which of the following is added to the vegetable oil to convert them into ghee and margarine?
a) water
b) hydrogen
c) oxygen
d) carbon
