100 tons of containing 20% impurities will give iron by reduction with equal to
In 100 tons of
= 80 tons
= 56 tons
Two oxides of a metal contain 50% and 40% metal (M) respectively. If the formula of first oxide is the formula of second oxide will be
The reaction of calcium with water is represented by the equation,
What volume of at STP would be liberated when 8 g of calcium completely reacts with water?
No reacts with to form When 10 g of is formed during the reaction, the mass of consumed is
Hydrocarbon X contains 3 g carbon per gram of hydrogen. Simplest formula of the hydrocarbon X is:
Equal weights of Zn metal and iodine are mixed together and is completely converted to What fraction by weight of original Zn remains unreacted? (Zn = 65, I = 127)
changes to on reaction with . There is:
Which of the following has maximum mass?
The mass of one atom of hydrogen is approximately
5.6 L of a gas at NTP are found to have a mass of 11 g. The molecular mass of the gas is
10 mL of a hydrocarbon on complete combustion gave 30 mL of and 20 mL of Molecular formula of the hydrocarbon is: