456: 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
457: In the context of global economy, which one of the following pairs is not correctly matched?
(a) JP Morgan Chase : Financial Services
(b) Roche Holding AG : Financial Services
(c) WL Ross & Co. : Private Equity Firm
(d) Warburg Pincus : Private Equity Firm
458: Consider the following statements regarding the earthquakes :
I. The intensity of earthquake is measured on Mercalli scale.
II. The magnitude of an earthquake is a measure of energy released.
III. Earthquake magnitudes are based on direct measurements of the amplitude of seismic waves.
IV. In the Richter scale, each whole number demonstrates a hundredfold increase in the amount of energy released.
Which of these statements are correct ?
(a) I, II and III
(b) II, III and IV
(c) I and IV
(d) I and III
459: In the map shown in the given figure, rivers labelled as 1, 2, 3 and 4 are respectively
(a) Kosi, Gomati, Ghaghara and Gandak
(b) Kosi, Ganga, Gomati and Ghaghara
(c) Gandak, Ganga, Gomati and Ghaghara
(d) Teesta, Gomati, Ghaghara and Kosi
460: Ice skating can be used to demonstrate that when ice is under pressure, its:
(a) Melting point is lowered
(b) Melting point is raised
(c) Melting point remains unchanged
(d) Coefficient of friction with metal is reduced