Questions for the Day 25-9-2007

1. Orthocentre of triangle with vertices (0, 0), (3, 4) and (4, 0) is
(A) (3, 5/4)
(B) (3, 12)
(C) (3, 3/4)
(D) (3, 9)


2. During depression of freezing point in a solution the following are in equilibrium
(A) liquid solvent, solid solvent (B) liquid solvent, solid solute
(C) liquid solute, solid solute (D) liquid solute solid solvent

3. A cube has a side of length 1.2 × 10^−2m. Calculate its volume.
(A) 1.7 × 10^−6 m^3. (B) 1.73 × 10^−6 m^3.
(C) 1.70 × 10^−6 m^3. (D) 1.732 × 10^−6 m^3.