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WorksheetsBASIC CONCEPTS OF CHEMISTRY AND CHEMICAL CALCULATION
Total questions: 10
Worksheet time: 5mins
Avogadro's number represents the number of atoms in
12g of C12
320g of S
32g of Oxygen
12.7g of iodine.
The oxidation number of oxygen in peroxide
-2
-1
0
+2
Molar mass carbondioxide
43
44
45
46
The empirical formulae for sucrose C12H22O11
CH2O
C6H11O11
C12H22O11
C2HO
Equivalent mass of HNO3 (At.mass of N=14)
65
67
63
64
How many moles of l and m are formed
18moles of l & 4 moles of m
16 moles of l & 4 moles of m
16 moles of l &5 moles of m
16 moles of l & 3 moles of m
Which reaction undergoes oxidation
The oxidation number of Na is
1
2
0
-1
Which of the following statement is incorrect
The empirical formulae of acetic acid is CH2O
The oxidation number of oxygen in superoxide is zero
The unit for relative atomic mass is u
Copper wire is an example for element
How many moles of hydrogen is required to produce 10 moles of ammonia ?
15 moles of hydrogen
30 moles of hydrogen
45 moles of hydrogen
60 moles of hydrogen
