The osmotic pressure of blood is 8.21 atm at 37$°$C. How much glucose would be used for an injection that is at the same osmotic pressure as blood?

• 22.17 gL^-1

• 58.14 gL^-1

• 61.26 gL^-1

• 75.43 gL^-1

At equilibrium, the rate of dissolution of a solid solute in a volatile liquid solvent is

• less than the rate of crystallisation

• greater than the rate of crystallisation

• equal to the rate of crytallisation

• zero

3.

Which of the following elements can be involved in $\mathrm{p\pi } - \mathrm{d\pi }$ bonding?

• Carbon

• Nitrogen

• Phosphorus

• Boron

A number of elements available in earth's crust but most abundant elements are

• Al and Fe

• Al and Cu

• Fe and Cu

• Cu and Ag

The element which forms oxides in all oxidation states + 1 to + 5 is

• nitrogen

• phosphorus

• arsenic

• antimony

Which of the following is the increasing order of enthalpy of vaporization?

• NH₃, PH₃, AsH₃

• AsH₃, PH₃ NH₃

• NH₃, AsH₃, PH₃

• PH₃, AsH₃, NH₃

The rate of a gaseous reaction is given by the expression k[A] [B]. If the volume of the reaction vessel is suddenly reduced to $\frac{1}{4}$ the initial volume, the reaction rate relating to original rate will be

• $\frac{1}{10}$

• $\frac{1}{8}$

• 8

• 16

For the process to occur under adiabatic conditions, the correct condition is

• $∆$T = 0

• $∆$p = 0

• q = 0 

• W = 0

$\frac{3}{2}$O₂(g) $\to$O₃(g); K_p for this reaction is 2.47 x 10^-29. At 298 K, ${∆}_{\mathrm{r}}\mathrm{G}°$ for conversion of oxygen to ozone will be

• 100 kJ mol^-1

• 150 kJ mol^-1

• 163 kJ mol^-1

• 2303 kJ mol^-1

Which one ofthe following statements about C₂ molecule is wrong?

• The bond order of C₂ is 2.

• In vapour phase, C₂ molecule is diamagnetic.

• Double bond in C₂ molecule consists of both $\mathrm{\pi }$- bonds because of the presence of 4${\mathrm{e}}_{\mathrm{s}}^{-}$ in two $\mathrm{\pi }$- molecular orbitals.

• double bond in C₂ molecule consists of one $\sigma$- bond and on $\mathrm{\pi }$-bond.