Question: Pick out the correct statement ?

• 1. A catalyst speeds up the forward reaction but slows shown the reverse reaction
• 2. Addition of catalyst changes the equilibrium constant
• 3. Pressure changes do not change the equilibrium concentrations
• 4. The composition of equilibrium is changed by catalyst

Question: Pick out the correct statement ?

• 1. A chemical reaction accompanied by absorption of heat is called an exothermic reaction
• 2. A chemical reaction accompanied by evolution of heat is called an endothermic reaction
• 3. The rate constant for a first order reaction does not change on changing the concentration units
• 4. Chemical equilibrium state is dynamic in nature

Question: Ammonia synthesis gas is produced from fuel oil by _________________?

• 1. Steam reforming
• 2. Hydro-cracking
• 3. Partial oxidation
• 4. Hydrogenation

Question: Reaction of calcium Fluorapatite with sulphuric acid produces ___________________?

• 1. Ortho-phosphoric acid
• 2. Simple superphosphate
• 3. Triple superphosphate
• 4. Red phosphorous

Question: Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching ?

• 1. Isopropyl alcohol
• 2. Butyl alcohol
• 3. Toluene
• 4. Hexane

Question: Main component of bone ash is _________________?

• 1. Calcium sulphate
• 2. Calcium phosphate
• 3. Calcium carbonate
• 4. Sodium phosphate

Question: Ammonium nitrate (a fertiliser) is coated with limestone powder to ____________________?

• 1. Increase its nitrogen content
• 2. Cut down its production cost
• 3. Avoid the risk of explosion
• 4. Add extra nutrient as fertiliser

Question: Heating of ortho-phosphoric acid to about 900°C, produces_________________?

• 1. Meta-phosphoric acid
• 2. Pyrophosphoric acid
• 3. No change in it
• 4. None of these

Question: Prilling tower is found in the flowsheet for the manufacture of__________________?

• 1. Ammonia
• 2. Urea
• 3. Superphosphate
• 4. Triple superphosphate

Question: Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?

• 1. Nitrogenous fertilisers
• 2. Phosphatic fertilisers
• 3. Potassic fertiliser
• 4. None of these