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Total Marks: 65 Time Allowed: 2 Hours 20 Minutes Section A: MCQs (12 Marks, 20 Minutes) 1. The catalyst used in the Haber process is: a) Nickel b) Iron c) Platinum d) Copper 2. Which of the following is a secondary alcohol? a) Methanol b) Ethanol c) Propan-2-ol d) Butanal 3. The chemical formula … Read more
Total Marks: 65 Time Allowed: 2 Hours 20 Minutes Section A: MCQs (12 Marks, 20 Minutes) 1. Which gas is released when acids react with carbonates? a) Oxygen b) Hydrogen c) Carbon dioxide d) Nitrogen= 2. What is the molecular formula of benzene? a) C₂H₄ b) C₃H₆ c) C₆H₆ d) C₄H₈ 3. Which element has … Read more
Related Questions: CHEMICAL EQUILIBRIUM ACIDS, BASES AND SALTS ENVIRONMENTAL CHEMISTRY-AIR ENVIRONMENTAL CHEMISTRY-WATER ORGANIC CHEMISTRY BIOCHEMISTRY EMPIRRICAL DATA COLLECTION AND ANALYSIS QUALITATIVE ANALYSIS Define chemical equilibrium with example What is meant by chemical equilibrium? Differentiate between reversible and irreversible reactions? State Le-Chatelier’s principle. What is the significance of the equilibrium constant (Kc)? Why does a catalyst … Read more
The water cycle, also known as the hydrological cycle, is the continuous movement of water on, above, and below the surface of the Earth. The cycle involves several key processes: 1. Evaporation: Water from oceans, lakes, and rivers is heated by the sun and turns into water vapor, rising into the atmosphere. 2. Condensation: The … Read more
Refining crude oil involves separating its components based on their different boiling points through a process called fractional distillation. Crude oil is first heated to high temperatures in a distillation column. As it vaporizes, the vapor rises through the column and condenses at different levels depending on the boiling point of each component. The resulting … Read more
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. The process takes place in the chloroplasts of plant cells and involves the absorption of light by chlorophyll. During photosynthesis, carbon dioxide (CO₂) from the air and water (H₂O) from the soil … Read more
Crude oil undergoes fractional distillation to separate its components into fractions based on their boiling points. After distillation, these fractions are further refined by processes such as cracking, reforming, and desulfurization to remove impurities and produce usable fuels and products. Related Questions: How are urea prills produced? What is slaked lime? How is it produced? … Read more
Related Questions: Write chemical reactions that take place during carbonation in the Solvay process. Describe the following with an example: Outline basic reactions of the Solvay process. Relate the study of chemistry to careers in industry. Petroleum is a mixture of several compounds, which are separated in a refinery. Draw a flow sheet diagram for … Read more
Related Questions: Write chemical reactions that take place during carbonation in the Solvay process. Describe the following with an example: Outline basic reactions of the Solvay process. Relate the study of chemistry to careers in industry. Petroleum is a mixture of several compounds, which are separated in a refinery. Draw a flow sheet diagram of … Read more
a) What is the name of the apparatus used for this purpose? Fractionating column. b) What is the name of the process used in separating crude oil? Fractional distillation. c) Write the name of the fraction that represents gases. Liquefied Petroleum Gas (LPG). d) Which fractions represent liquids with the lowest boiling points? Petrol and … Read more