Low concentration of oxygen in the blood and tissues of people living at high altitude is due to- (a) low temperature (b) low atmospheric pressure (c) high atmospheric pressure (d) both low temperature and high atmospheric pressure

An antifreeze solution is prepared from 222.6 g of ethylene glycol \(C_2\)\(H_4\)\((OH)_2\) and 200 g of water. Calculate the molality of the solution. If the density of this solution be 1.072 \(gmL^{-1}\), what will be the molarity of the solution? (a) 7.20 M (b) 12.03 M (c) 9.11 M (d) 6 M

Consider the figure and mark the correct option. (a) water will move from side (A) to side (B) if a pressure lower than osmotic pressure is applied on piston (B). (b) water will move from side (B) to side (A) if a pressure greater than osmotic , pressure is applied on piston (B). (c) water will move from side (B) to side (A) if a pressure equal to osmotic pressure is applied on piston (B). (d) water will move from side (A) to side (B) if pressure equal to osmotic pressure is applied on piston (A).

Equimolar solutions in the same solvent have- (a) Same boiling point but different freezing point (b) Same freezing point, but different boiling point (c) Same boiling and same freezing point (d) Different boiling and different freezing points

The molal elevation constant depends upon (a) nature of solute. (b) nature of the solvent. (c) vapour pressure of the solution. (d) enthalpy change.

The osmotic pressure of a solution is directly proportional to (a) the molecular concentration of the solute. (b) the absolute temperature at a given concentration. (c) the lowering of vapour pressure. (d) all the above.

When mercuric iodide is added to the aqueous solution of potassium iodide, the: (a) Freezing point is raised (b) Freezing point does not change (c) Freezing point is lowered (d) Boiling point does not change

Which of the following aqueous solutions containing 10 g of solute in each case, has highest m.p.? (a) NaCl solution (b) KCl solution (c) sugar solution (d) glucose solution

Which of the following is incorrect for an ideal solution? (a) \(∆H_{mix}\) =0 (b) \(∆V_{mix}\) = 0 (c) ∆P = \(P_{obs}\) – \(P_{calculated}\) = 0 (d) \(∆G_{mix}\) = 0

Acetone and carbon disulphide form binary liquid solution showing positive deviation from Raoult’s law. The normal boiling point (Tb) of pure acetone is less than that of pure \(CS_2\). Pick out the incorrect statement among the following- (a) Boiling temperature of the mixture is always less than the boiling temperature of acetone (b) Boiling temperature of Azeotropic mixture is always less than the boiling temperature of acetone (c) When a small amount of \(CS_2\) (less volatile component) is added to an excess of acetone boiling point of the resulting mixture increases (d) A mixture of \(CS_2\) and \(CH_3\)\(COCH_3\) can be completely separated by simple fractional distillation

Interstitial compounds are formed when small atoms are dropped under the curved lattice of metals. Which of the following is not the characteristics property of interstitial compounds? (A) They have high melting points in to pure metals (B) They are very hard (C) They retain metallic Conductivity (D) They are chemically very reactive

The crystal showing defect is:

The lattice site in a pure crystal cannot be occupied by __________. (A) Molecule (B) Ion (C) Electron (D) Atom

What is the coordination number in a square close packed structure in two dimensions? (A) 2 (B) 3 (C) 4 (D) 6

Which of the following Defects is also known as dislocation defect? (A) Frenkel defect (B) Schottky defect (C) Non-stoichiometric defect (D) Simple interstitial defect