Which one of the following statements is not correct?

(1) A catalyst speeds up both forward and backward reaction with the same rate. So, equilibrium constant is not affected by the presence of a catalyst at any given temperature.

(c) The velocity of sound in air decreases as the humidity increases.

The velocity of sound in air increases as the humidity increases. 

Correct option : (d) The relative loss of energy due to respiration decreases with higher trophic levels.

Explanation:

As we go higher in the trophic levels through the food chain, the loss of energy due to respiration as well as metabolic activities successively increase. So, there occurs the transference of only 10% of the preceding trophic level to the next higher trophic level.

(a) Rourkela Steel Plant, the first integrated steel plant in the Public Sector of India was set up with the Soviet Union collaboration.

(d) A metamorphic rock is softer and less compact than its original type

(a) The Western Ghats are relatively higher in their northern region

(d) India ranks third in the world in coal production 

(a) In Lok Sabha, a no-confidence motion has to set out the grounds on which it is based

The Lok Sabha can refuse assent to any demand for grant

(b) In case of difference of opinion amongst the Chief Election Commissioner and other 'Election Commissioners, the matter is decided by the Law Commission.