Environmental Chemistry · JEE Main previous year questions

2017 2 questions

1. Q862017 · 9 Apr 2017 · Shift 1

   Which of the following is a set of greenhouse gases?

   1. A.$\mathrm{C}{\mathrm{H}}_4$, ${\mathrm{O}}_3$, ${\mathrm{N}}_2$, $\mathrm{S}{\mathrm{O}}_2$
   2. B.${\mathrm{O}}_3$, ${\mathrm{N}}_2$, $\mathrm{C}{\mathrm{O}}_2$, $\mathrm{N}{\mathrm{O}}_2$
   3. C.${\mathrm{O}}_3$, $\mathrm{N}{\mathrm{O}}_2$, $\mathrm{S}{\mathrm{O}}_2$, $\mathrm{C}{\mathrm{l}}_2$
   4. D.$\mathrm{C}{\mathrm{O}}_2$, $\mathrm{C}{\mathrm{H}}_4$, ${\mathrm{N}}_2\mathrm{O}$, ${\mathrm{O}}_3$
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   Answer: D

2. Q872017 · 8 Apr 2017 · Shift 1

   Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal.

   1. A.${\mathrm{O}}_3$ and $\mathrm{C}{\mathrm{O}}_2$
   2. B.$\mathrm{C}{\mathrm{O}}_2$ and $\mathrm{N}{\mathrm{O}}_2$
   3. C.$\mathrm{S}{\mathrm{O}}_2$ and $\mathrm{N}{\mathrm{O}}_2$
   4. D.$\mathrm{S}{\mathrm{O}}_2$ and ${\mathrm{O}}_3$
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   Answer: C