$1.$ The Haber$-$Bosch process synthesizes ammonia using which two elements?

$-$ A$)$ Oxygen and Hydrogen

$-$ B$)$ Nitrogen and Hydrogen

$-$ C$)$ Carbon and Oxygen

$-$ D$)$ Sulfur and Nitrogen

$2.$ Which process is used to produce Nitric Acid from Ammonia?

$-$ A$)$ Ostwald Process

$-$ B$)$ Haber Process

$-$ C$)$ Bosch Process

$-$ D$)$ Leblanc Process

$3.$ Urea is chemically known as:

$-$ A$)$ NH$$

$-$ B$)$ CO$$

$-$ C$)$ CO$($NH$)$

$-$ D$)$ NH$$NO$$

$4.$ Ammonium Chloride can be used as a:

$-$ A$)$ pH increasing agent

$-$ B$)$ pH decreasing agent

$-$ C$)$ Potassium source

$-$ D$)$ Phosphorus source