1. How will you convert butan-2-one to propanoic acid?
(a) Tollen’s reagent
(b) Fehling solution
2. Which blue-liquid is obtained on reacting equimolar amounts of two gases (N and O) at –30°C?
3. Which of the following resonating structures of 1-methoxy-1, 3-butadiene is least stable?
4. The ratio of the rate of diffusion of helium and methane under identical condition of pressure and temperature will be:
5. When PbO2 reacts with conc. HNO3 the gas evolved is:
Source JEE screening 2005