20 cm3
25 cm3
50 cm3
100 cm3
Correct answer is C
Volume of air containing 10 cm O2 is
(100 x 10)/(20) = 50cm3
Which of the following non-metals reacts most readily with metals? ...
The following substances are normal salts except ...
What type of reaction is involved in the formation of alkanols from alkenes? ...
Which of the following will displace copper from a solution of copper (ll) salt? ...
Bleaching powder, CaOCI2, H2O, deteriorates on exposure to air because...
What is the atomic number of Livermorium? ...
Calculate the number of moles of HCl present in 20cm3 of a 0.75M solution of the acid...
In the preparation of salts, the method employed will depend on the? ...