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Worksheetschemistry
Total questions: 9
Worksheet time: 5mins
Which one of the following is a weak acid?
HCl
H2CO3
H2SO4
HNO3
Acids give
H+ in water
OH− in water
Both (a)& (b)
None of these
Caustic soda is the common name for
Mg(OH)2
KOH
Ca(OH)2
NaOH
2 H and H2 stands for ___ and ___ respectively of hydrogen
2 atoms
2 atoms and 2 molecules
2 atoms and 1 molecule
2 molecules
___ ZnS + ___O2 -----> ____ ZnO + ____ SO2
Balance this eqn. Select the numbers in correct order as in question
4, 5, 4, 6
2, 3, 2, 2
4, 5, 4, 4
2, 2, 2, 3
___ NH3 + ___O2 -----> ____ NO + ____ H2O
Balance this eqn. Select the numbers in correct order as in question
4, 5, 4, 6
2, 5, 2, 6
4, 5, 4, 4
1, 2, 2, 3
___ S + ____ HNO3 -----> ____ NO2 + ____ H2O + H2SO4 . Balance this eqn. Select the numbers in correct order as in question
1, 6, 6, 2
1, 6 , 2 , 2
1,4, 3, 3
1, 2, 2, 3
___ P + ____ HNO3 -----> ____ NO2 + ____ H2O + H3PO4 . Balance this eqn. Select the numbers in correct order as in question
1, 5, 5, 1
1, 1 , 2 , 2
1,1, 3, 3
1, 5, 2, 3
___ PbO + ____ NH3 -----> ____ Pb + ____ H2O + N2. Balance this eqn. Select the numbers in correct order as in question
3, 2, 3, 3
3, 1 , 2 , 2
3,1, 3, 3
2, 3, 2, 3
