Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause a decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
- AFrequent irrigation of the crop
- BTreatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer
- CRemoval of all yellow leaves and spraying the remaining green leaves with $2,4,5$-trichlorophenoxy acetic acid
- DApplication of iron and magnesium to promote synthesis of chlorophyll
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List-$I$ shows reactions involved in the metallurgy of $Pb$ (lead) and List-$II$ shows the names of the processes. Match List-$I$ with List-$II$ and select the correct code for your answer.
List-$I$ List-$II$ $(P). PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$ $(1).$ Smelting $(Q). PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$ $(2).$ Self reduction $(R). PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$ $(3).$ Calcination $(S). PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$ $(4).$ Roasting
| List-$I$ | List-$II$ |
|---|---|
| $(P). PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$ | $(1).$ Smelting |
| $(Q). PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$ | $(2).$ Self reduction |
| $(R). PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$ | $(3).$ Calcination |
| $(S). PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$ | $(4).$ Roasting |
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