$26.$ Potassium Sulfate is preferred for its:

$-$ A$)$ High nitrogen content

$-$ B$)$ Absence of chloride

$-$ C$)$ Low cost

$-$ D$)$ High potassium content

$27.$ The main environmental issue with the Ostwald process is the production of:

$-$ A$)$ Carbon Dioxide

$-$ B$)$ Nitrogen Dioxide

$-$ C$)$ Sulfur Dioxide

$-$ D$)$ Hydrochloric Acid

$28.$ Calcium Ammonium Nitrate is safer to store than Ammonium Nitrate because it is less:

$-$ A$)$ Soluble

$-$ B$)$ Hygroscopic

$-$ C$)$ Volatile

$-$ D$)$ Explosive

$29.$ Ammonium Sulfate is particularly useful for crops that require high amounts of:

$-$ A$)$ Calcium

$-$ B$)$ Sulfur

$-$ C$)$ Potassium

$-$ D$)$ Magnesium