Chemistry Test ...

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following biomolecules is insoluble in water?

The pyrimidine bases present in DNA are

Which of the following statements is correct about the compounds I, II and III?

Insulin regulates the metabolism of

Which of the following statements is not true?

Which of the following statements are true?

(A) Sucrose is a non-reducing sugar.

(B) Glucose is oxidised by bromine water.

(C) Glucose rotates plane polarised light in clockwise direction.

(D) Fructose is oxidised by bromine water.

The vapour pressure of two volatile liquid mixtures is p_t = 5.3 + 2x_B (in mm of Hg), where X_B is mole fraction of B in mixture. What is the ratio of mole fractions of A and B in liquid phase?

(P_A and P_B are vapour pressures of A and B)

A mixture contains 1 mol volatile liquid A  and 3 mol volatile liquid . If solution behaves ideally, total vapour pressure of the solution is approximately

The vapour pressure of a pure liquid ‘A’ is 70 torr. at 27°C. It forms an ideal solution with another liquid B.The mole fraction of B is 0.2 and total pressure of the solution is 84 torr at 27°C.The vapour  pressure of pure liquid B at 27°C is

Consider the following vapour pressure - mole fraction graph. SP (Total vapour pressure of the resultant solution) is equal to