After Effects Of Chemical Changes! Trivia Facts Quiz

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After Effects Of Chemical Changes! Trivia Facts Quiz - Quiz

Since we are familiar with how chemical changes happen, there are aftermath of the combination of two substances to form a new substance. Effects of chemical changes can be beneficial or harmful to surroundings. What are the effects? Are the newly formed substances easily reversible? Take this quiz now!


Questions and Answers
  • 1. 

    Which of these is not a characteristic of chemical changes?

    • A.

      It is not easily reversible 

    • B.

      It is easily reversible 

    • C.

      It always involve catalysts 

    • D.

      No new substances are formed 

    Correct Answer
    A. It is not easily reversible 
    Explanation
    Chemical changes involve the formation of new substances, which is a characteristic of chemical changes. They are also not easily reversible, meaning it is difficult to revert the substances back to their original form. Catalysts are not always involved in chemical changes, so it is not a characteristic. Therefore, the correct answer is "It is easily reversible."

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  • 2. 

    What is the process of change in substance from solid to gas? 

    • A.

      Filtration 

    • B.

      Freezing 

    • C.

      Condensation 

    • D.

      Melting 

    Correct Answer
    C. Condensation 
    Explanation
    Condensation is the process of change in substance from a gas to a liquid. In this case, the question is asking for the process of change from a solid to a gas. Therefore, condensation is not the correct answer. The correct answer should be sublimation, which is the process of change from a solid directly to a gas without going through the liquid phase.

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  • 3. 

    Which of these is neutral?

    • A.

      Carbon (II) oxide 

    • B.

      Carbon (IV) oxide 

    • C.

      Sulphur (VI) oxide 

    • D.

      Sulphur (IV) oxide 

    Correct Answer
    A. Carbon (II) oxide 
    Explanation
    Carbon (II) oxide is neutral because it has an equal number of positive and negative charges. In this compound, carbon has a +2 charge, and oxygen has a -2 charge. These charges cancel each other out, resulting in a neutral compound.

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  • 4. 

    What element is behind matching sticks?

    • A.

      Carbon 

    • B.

      Sulphur 

    • C.

      Molybdenum 

    • D.

      Manganese 

    Correct Answer
    B. Sulphur 
    Explanation
    Sulphur is the correct answer because it is the only element among the options that is commonly used to create matches. Sulphur is a key component of the match head, where it helps initiate the combustion reaction when struck against a rough surface. Carbon, Molybdenum, and Manganese do not have a significant role in the creation or function of matches.

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  • 5. 

    Which of these is odd? 

    • A.

      Filtration 

    • B.

      Fractional distillation 

    • C.

      Rusting of metals 

    • D.

      Burning of paper 

    Correct Answer
    A. Filtration 
    Explanation
    Filtration is the odd one out among the given options because it is the only process that involves the separation of solid particles from a liquid or gas by passing it through a porous medium. Fractional distillation, rusting of metals, and burning of paper are all chemical processes that involve the transformation or reaction of substances.

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  • 6. 

    Which of these is Kipp apparatus needed during its preparation? 

    • A.

      Aluminum oxides 

    • B.

      Tetraoxosulphate (VI) acid 

    • C.

      Hydrogen sulphide 

    • D.

      Hydrogen peroxide 

    Correct Answer
    C. Hydrogen sulphide 
    Explanation
    The Kipp apparatus is needed during the preparation of hydrogen sulphide. The Kipp apparatus is a laboratory device used for generating small volumes of gases. It consists of two chambers, one for the reactants and one for the generated gas. In the case of preparing hydrogen sulphide, the apparatus would be used to react a suitable source of sulphur with a suitable acid, such as hydrochloric acid, to produce hydrogen sulphide gas.

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  • 7. 

    Which of these is not a chemical change? 

    • A.

      Burning of paper 

    • B.

      Mixing of water with salt 

    • C.

      Rusting of metals 

    • D.

      Melting of candle 

    Correct Answer
    B. Mixing of water with salt 
    Explanation
    Mixing of water with salt is not a chemical change because it is a physical change. In this process, the water molecules and salt particles do not undergo any chemical reactions or form new substances. The salt dissolves in water, creating a homogeneous mixture, but the chemical composition of both water and salt remains unchanged.

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  • 8. 

    Which of these is not among the types of reactions?

    • A.

      Catalytic reaction 

    • B.

      Exothermic reaction 

    • C.

      Endothermic reaction 

    • D.

      Irreversible reaction 

    Correct Answer
    D. Irreversible reaction 
    Explanation
    An irreversible reaction is not among the types of reactions. In a reversible reaction, reactants can form products, and products can also react to form reactants. However, in an irreversible reaction, the reaction proceeds only in one direction and cannot be reversed.

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  • 9. 

    Which of these is not a carbon?

    • A.

      Coke 

    • B.

      Coal tar 

    • C.

      Ammoniacal liquor 

    • D.

      Bronze 

    Correct Answer
    D. Bronze 
    Explanation
    Bronze is not a carbon because it is an alloy composed primarily of copper and tin, with small amounts of other metals. It does not contain carbon as one of its main components. Coke, coal tar, and ammoniacal liquor, on the other hand, are all carbon-based substances. Coke is a solid carbonaceous material derived from coal, coal tar is a thick, black liquid produced during the distillation of coal, and ammoniacal liquor is a solution of ammonia in water, which contains carbon atoms.

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  • 10. 

    Which of these reactions produces heat? 

    • A.

      Exothermic reaction 

    • B.

      Endothermic reaction 

    • C.

      Reversible reaction 

    • D.

      Catalytic reaction 

    Correct Answer
    A. Exothermic reaction 
    Explanation
    Exothermic reactions produce heat as a byproduct. In these reactions, the energy released from the reaction is greater than the energy required to break the bonds of the reactants. This excess energy is released in the form of heat, resulting in an increase in temperature in the surroundings. Examples of exothermic reactions include combustion reactions, such as burning wood or gasoline, where heat is released.

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