MCQ
Photochemical smog is formed by :
- ANitrogen oxide.
- BHydrocarbons.
- CNitrogen oxide and hydrocarbons.
- ✓Solar radiations upon nitrogen oxide and hydrocarbons.
✓
Answer
Correct option: D.
Solar radiations upon nitrogen oxide and hydrocarbons.
The photochemical smog refers to the smog which contains a high concentration of $\mathrm{NO}_x$, ozone and other volatile compounds. The photochemical smog contains highly reactive species like $\mathrm{NO}_x,$ hydrocarbons and ozone which can produce reactive radicals on reaction with sunlight. This cause destruction of the chlorophyll pigments, blazing and bleaching of the leaves and other parts of the plants.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
“The quantity of heat which must be supplied to decompose a compound into its element is equal to the heat evolved during the formation of that compound from the elements.” This statement is known as
One sample of atmospheric air is found to have $0.03\%$ of carbon dioxide and another sample $0.04\%$. This is evidence that
→Which one of the following molecules is polar ?
The ionic bonds $X^+Y^-$ are formed when
→$(I)$ electron affinity of $Y$ is high $(II)$ ionization energy of $X$ is low
$(III)$ lattice energy of $XY$ is high $(IV)$ lattice energy of $XY$ is low
Choose the correct code
The ionisation enthalpy of hydrogen atom is $\ce{1.312 \times 10^6J mol^{-1}}$. The energy required to excite the electron in the atoms from $n = 1$ to $\ce{n_2 = 2}$ is :
→Which of the following pairs has both members from the same group of the periodic table
Which of the following ion is most resonance stabilized?
For a particular reversible reaction at temperature $T, \Delta H$ and $\Delta S$ were found to be both $+ve.$ If $T_e$ is the temperature at equilibrium, the reaction would be spontaneous when
→$KMnO_4$ oxidises oxallic acid to $CO_2$ in acidic medium then equivalent weight of $KMnO_4$ is $(Mn = 55)$
→Which of the following order is correct ?