Master Class Digital Learning Academy

 Polymers in Chemistry   1. What is a polymer? a. A single molecule compound b. A substance made of repeating structural units c. A metalloid element d. A compound without carbon atoms    2. How are polymers formed?    a. Dehydration synthesis    b. Reduction reactions    c. Hydrolysis    d. Combustion reactions 3. Which of the following is an example of a natural polymer?    a. Polyethylene    b. Polypropylene     c. Starch    d. PVC 4. What type of polymerization process involves the elimination of a small molecule like water?    a. Addition polymerization    b. Condensation polymerization    c. Cross-linking polymerization    d. Radical polymerization 5. What are the primary components of polymer chains?    a. Atoms    b. Monomers    c. Isomers    d. Dimers 6. Which of the following is NOT a natural polym...

Chemical Reactivity of Metals , Non-metals & Metalloids 1. Which metal is commonly used in the commercial production of soap?    a) Sodium      b) Calcium      c) Magnesium       d) All of the above 2. In the beverage industry, which metal is often used to soften water?    a) Sodium       b) Calcium      c) Magnesium      d) Potassium 3. Which of the following metals is responsible for the "hardness" in water?    a) Sodium      b) Calcium       c) Magnesium      d) Iron 4. Which metal is commonly used in the production of fireworks to give a bright, intense flame colour?    a) Sodium      b) Calcium      c) Magnesium       d) Aluminum 5. In the food industry, which metal is often used as a reducing agent and le...

Electro Chemistry,  Cells, & Batteries  1. What is the process of a substance gaining electrons called?    a) Oxidation      b) Reduction       c) Electrolysis      d) Ionization   2. In a galvanic cell , where does oxidation occur?    a) Anode       b) Cathode      c) Electrolyte      d) Salt bridge    3. What is the SI unit of electric charge?    a) Ampere       b) Coulomb       c) Volt      d) Ohm   4 Which of the following is a non-spontaneous process in an electrochemical cell?    a) Oxidation      b) Reduction      c) Electrolysis       d) Galvanization   5. What is Faraday's law of electrolysis related to?    a) Heat transfer ...

Physical States and Properties of Solid, Liquid, Gas, and Plasma States of Matter 1. What is the primary characteristic that distinguishes solids from liquids and gases?    a. Shape    b. Volume    c. Density    d. Compressibility 2. In which state of matter do particles have the most kinetic energy?    a. Solid    b. Liquid    c. Gas    d. Plasma 3. What happens to the volume of a gas when its temperature is increased while keeping pressure constant?    a. It increases    b. It decreases    c. Remains constant    d. Varies unpredictably  4. Which of the following is not a characteristic of a liquid?    a. Definite shape    b. Definite volume    c. Ability to flow    d. Incompressibility 5. What occurs during sublimation?    a. Solid to liquid change in matter     b. Liquid to gas change in matter ...