The pollution due to oxides of sulphur gets enhanced due to the presence of:
Choose the most appropriate answer from the options given below:
The question involves identifying the factors that enhance pollution caused by oxides of sulphur. The correct choice among the options is: (a), (b), (d) only.
Here's the rationale:
Explanation: Hydrocarbons (c) were not chosen because they primarily play significant roles in the formation of other types of pollutants, such as photochemical smog, rather than directly enhancing sulfur oxide pollution.
Match the following:
List-I (Metal in drinking water) | List-II (Maximum prescribed concentration in ppm) |
---|---|
A) Mn | I) \( 0.05 \) |
B) Zn | II) \( 3.0 \) |
C) Cd | III) \( 0.005 \) |
D) Cu | IV) \( 5.0 \) |
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :