Question 1
The pH of clean rain water is around 5.5. Which substance is responsible for this?
Methane
Carbon dioxide
Nitrogen oxides
Sulfur dioxide
The pH of clean rain water is around 5.5. Which substance is responsible for this?
Methane
Carbon dioxide
Nitrogen oxides
Sulfur dioxide
Which statement is not true about the increasing levels of atmospheric carbon dioxide?
CO2 (g) + H2O (l) ⇌ H+ (aq) + HCO3- (aq)
HCO3- (aq) ⇌ H+ (aq) + CO32- (aq)
The concentration of HCO3- increases in water bodies
The concentration of H+ increases in water bodies
The pH of lakes and oceans falls as the CO2 levels increase
The increasing concentration of CO32- enables marine organisms to build thicker shells
What is a major acid responsible for acid rain and originates from car engines?
H2SO4
HNO3
SO2
NO2
What are three consequences of acid rain?
I and II only
I and III only
II and III only
I, II and III
Some coal contains as much as 3% sulfur. How much sulfur dioxide (M = 64.07 g mol-1) is produced by burning a lump of coal of mass 125 g? (Ar S = 32.07)
Which are true about the effect of acid deposition on plants?
I and II only
I and III only
II and III only
I, II and III
Which are true about the effect of acid deposition on human health?
I and II only
I and III only
II and III only
I, II and III
The conversion of toxic emissions into harmless products takes place in catalytic converters as follows:
_CO (g) + _NO (g) → _CO2 (aq) + _N2 (g)
The sum of the coefficients is
4
5
6
7
Which can be used to reduce NOx emissions ?
I and II only
I and III only
II and III only
I, II and III
Iron structures can be damaged by dry deposition such as the equation below:
Fe (s) + SO2 (g) + O2 (g) → FeSO4 (s)
Which is true?
I and II only
I and III only
II and III only
I, II and III