NTA JEE Main 3rd April 2016 Offline

At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% $$O_2$$ by volume, for complete combustion. After combustion, the gases occupy 345 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is: (Assume complete combustion of reactant)

A stream of electrons from a heat filament was passed between two charge plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of $$\frac{h}{\lambda}$$ (where $$\lambda$$ is wavelength associated with the electron wave) is given by:

Which of the following atoms has the highest first ionization energy?

The species in which the N atom is in a state of sp hybridization is:

Two closed bulbs of equal volume (V) containing an ideal gas initially at pressure $$p_i$$ and temperature $$T_1$$ are connected through a narrow tube of negligible volume, as shown in the figure below. The temperature of one of the bulbs is then raised to $$T_2$$. The final pressure $$P_f$$ is:

The heats of combustion of carbon and carbon monoxide are $$-393.5$$ and $$-283.5$$ kJ mol$$^{-1}$$, respectively. The heat of formation (in kJ) of carbon monoxide per mole is:

The equilibrium constant at 298 K for a reaction $$A + B \rightleftharpoons C + D$$ is 100. If the initial concentration of all the four species were 1 M each, then the equilibrium concentration of D (in mol $$L^{-1}$$) will be:

Which of the following statements about water is FALSE?

The main oxides formed on combustion of Li, Na and K in excess of air are respectively:

The absolute configuration of

is: