Chemistry Past Questions and Answers

When \(50 cm 3\) of a saturated solution of a sugar (molar mass \(342.0 g\) / at \(404 c\) was evaporated to dryness \(31.2 g\) of dry solid was obtained. The solubility of sugar at \(40^{\circ} C\) is _____________

When \(H 2 S\) is passed into a solution of iron (III) chlofide, the colour changes form yellow to green. This is because _____________

The oxide that remains unchagged whentheated in hydrogen is _____________

The farmula bafte compound formed in a reaction between a trivalent metal, \(M\) and a tetravalent non-metal \(X\) is _____________

One mole of propane is mixed with five moles of oxygen. The mixture is ignited and the propane burns completely. Whay is the volume of the products at s.t.p.?<br/>[G. M. V. \(=22.4 dm 3 mol\) ']