NEET 2016 Question Paper - Phase-I Code B Q X - Mock Test

Fog is a colloidal solution of:

Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escape in the time required for one-half of the hydrogen to escape?

Lithium has a $bcc$ structure. Its density is $530{\text{kg/m}}^3$ and its atomic mass is $6.94\text{g/mol}$. Calculated the edge length of a unit cell of Lithium metal ($N_A=6.02\times 10^{23}{\text{mol}}^{-1}$):

Which of the following statements about the composition of the vapour over an ideal $1:1$ molar mixture of benzene and toluene is correct? Assume that the temperature is constant at $25^{\circ }\text{C}$. (Given vapour pressure data at $25^{\circ }\text{C}$: benzene $=12.8\text{kPa}$, toluene $=3.85\text{kPa}$)