Home

What is the correct answer?

4

Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?

A. Nitrogen oxides

B. Hydrocarbons

C. Both 'a' & 'b'

D. Carbon monoxide

Correct Answer :

C. Both 'a' & 'b'


Related Questions

The friction factor for the turbulent fluid flow in a rough pipe does… Pick out the wrong statement. Carnot cycle is also termed as the constant __________ cycle in thermodynamics. In chemical dehumidification process The material used for coating the welding electrode is termed as the If a solid is compressed adiabatically in its elastic range, its __________… Dryness fraction of dry steam is Normalising of a casting does not Age hardening is connected with An oxidation process is accompanied with decrease in the Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of… Boiling point of water gets lowered at high altitudes (e.g., hills), because __________ is not a heat treatment process. Mho's scale of hardness, which consists of 10 standard minerals is used… Carbon is present in the form of __________ in grey cast iron. Exposure to __________ accelerates the degradation of plastics. Steel produced from phosphatic iron is __________ in nature. A steam pipe is intended to be insulated with two layers of insulating… One ton of refrigeration is not equivalent to the heat removal rate of The bolt is subjected to __________ when the nut is tightened by putting… When the wavelength of incident X-rays increases, the angle of diffraction Out of the following, which will fracture most readity, when hit with… In electrical resistance welding, distortion results from the use of improper Air intake for an air compressor should be preferably taken from Electrometallurgical methods of metal extraction is normally used for… Which of the following properties of a solid is not dependent on crystal… Steel rods are normally used for concrete reinforcement because concrete… Normalising of an object does not Silicon crystal can be converted to p-type semiconductor by doping with For an ideal gas, Cp - Cv is