Chemistry Past Questions and Answers

The major process of manufacturing caustic soda on industrial scale is _____________

Which of these compounds is not used as a fertilizer?

How many molecules are there in \(5.6 dm 3\) of ammonia at s.t.p.? G.V.M. \(=224\) am 3 at s. \(s\). \(NA =6.02 \times 10^{23} moV\)

The isomer of a compound \(C _{5} H _{10}\) which does NOT decolorize bromine water is ____________

A mixture of nitrogen, oxygen and helium contains \(0.25\), \(0.15\) and \(0.4\) mole of these gases respectively. If the pressure contribution due to oxygen was \(2.5 atm\). The partial pressure of helium is ____________