Which of the following shows physical state of liquid while writing a chemical equation?
a) (s)
b) (l)
c) (g)
d) (aq)
Which of the following shows physical state of water solution while writing a chemical equation?
a) (s)
b) (l)
c) (g)
d) (aq)
Which of the following reaction shows the burning of hydrogen to produce water vapors?
a) H2(g) + O2(g) ------à 2H2O(g)
b) 2Ca(s) + O2(g)------àCaO(s)
c) CH4(g) + 2O2(g)-----à CO2(g) + 2H2O(l)
d) C(s) + O2(g)------à CO2(g)
Which of the following reaction shows the burning of magnesium to produce magnesium oxide?
a) H2(g) + O2(g) ------à 2H2O(l)
b) 2Mg(s) + O2(g)------à 2MgO(s)
c) CH3(g) + 3O2(g)-----à CO(g) + 2H2O(l)
d) C(s) + O2(g)------à CO2(g)
Which of the following reaction shows the burning methane in the presence of oxygen?
a) H2(g) + O2(g) ------à 2H2O(l)
b) 2Mg(s) + O2(g)------à 2MgO(s)
c) CH4(g) + 2O2(g)-----à CO2(g) + 2H2O(l)
d) C(s) + O2(g)------à CO2(g)
Which of the following reaction shows the burning of coal?
a) H2(g) + O2(g) ------à 2H2O(l)
b) 2Mg(s) + O2(g)------à 2MgO(s)
c) CH4(g) + 2O2(g)-----à CO2(g) + 2H2O(l)
d) C(s) + O2(g)------à CO2(g)
