11. How many moles of HCI will be in 250 cm³ portion of the acid of concentration 2 mol dm³ ?
A. 1.5mol
B. 1.0 mol
C. 0.5 mol
D. 0.25 mol
12. Given that Avogadro constant is 60.2 x 1023, calculate the number of atoms in 0.01 mole of
carbon.
A. 6.02× 1021 atoms
C. 6.02× 1025 atoms
B. 30.1 x1023 atoms
D. 12.30 ×1016 atoms
13. The IUPAC name for the compound with the formula CuSO4 is
A. copper (I) tetraoxosulphate (VI)
C. copper trioxosulphate (IV)
B. copper (I) tetraoxosulphate (VI)
D. copper (IV) trioxosulphate (I)
14. The unit measure of the amount of substance is the
A. molar mass
B. gramme
C. mole
D. kilogram
15. If 500.0 cm³ of 1.0 M NaOH solution is diluted to 1 dm³ with distlled water, calculate the
concentration of the diluted solution.
A. 0.25 mol dm³
B. 0.5 mol dm"
C. 1.0 mol dm
D. 2.0 mol dm
-3
-3
16. A quantity of NaCl was dissolved in 100.0 cm³ of solution to obtain 0.5 M NaCl solution.
Calculate the mass
of NaCl solution. [Na=23.0, Cl=35.5]
A. 2.93 g
B. 5.85 g
C. 29.25 g
D. 58.50 g
17. Determine the volume of 2.0 M HCl solution which should be diluted with distilled water to
obtain 50 cm³ of 0.1 M HCl solution
.
A. 2.5 cm³
B. 4.5 cm³
C. 5.0 cm³
D. 25.0 cm³
18. The IUPAC name for HNO3 is
A. dioxonitrate (III) acid.
B. trioxonitrate (IV) soid
C. trioxonitrate (V) acid.
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