461: Four metal rods of lengths 78 cm, 104 cm, 117 cm and 169 cm are to be cut into parts of equal length. Each part must be as long as possible. What is the maximum number of pieces that can be cut?
(A) 36
(B) 43
(C) 27
(D) 11
462: Which one of the following archaeologists initially discovered the Mohanjedaro site of the Indus valley civilisation?
(a) Sujohu Marshall
(b) Daya Ram Sahni
(c) Rakhal Das Banerji
(d) Sir Mortimer Wheeler
463: If the angles of a triangle are in the ratio of 4 : 3 : 2, then the triangle
(a) is obtuse
(b) has one angle greater than 80°
(c) is a right triangle
(d) is acute
464: Which one of the following mountain ranges is spread over only one State in India ?
(a) Aravalli
(b) Satpura
(c) Ajanta
(d) Sahyadri
465: Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ?
(a) Methane, ethane, propane and butane
(b) Propane, butane, ethane and methane
(c) Butane, ethane, propane and methane
(d) Butane, propane, ethane and methane