Chemical Reaction || Solved Q/A for S.E.E. - Exam || Part-2

By Pravin Keshari -

CHEMICAL REACTION

Part-2 

Very short questions and answers for S.E.E. students

Chemical reaction

Questions and answers to practice for S.E.E. examination


1) Write the types of given chemical equation.
            (i) C + O₂ → CO₂
            (ii) 2KClO₃ → 2KCl + O₂
Answer: (i) Combination reaction
                (ii) Decomposition reaction


2) Which type of chemical equation is given below?
        Fe + CuSO₄ → FeSO₄ + Cu
Answer: The given chemical equation is single displacement reaction.


3) Identify the type of chemical reaction given below.
        Ca + H₂SO₄ → CaSO₄ + H₂
Answer: The given chemical reaction is single displacement reaction.


4) What is a combination or synthesis reaction?
Answer: The chemical reaction in which two or more reactants combine to form a new compound is called combination reaction.


5) Define negative catalyst with an example.
Answer: The catalyst which decreases the rate of chemical reaction is called negative catalyst. For example: Glycerin.


6) What are reactants?
Answer: The elements or compounds that take part in a chemical reaction are called reactants. Reactants are written on the left hand side of an arrow.


7) What is chemical (or formula) equation?
Answer: The chemical reaction expressed by writing the symbols and molecular formula of reactants and products is called chemical equation.


8) "Calcium + Sulphuric Acid → Calcium Sulphate + Hydrogen". Mention the type of chemical reaction.
Answer: The type of chemical reaction is single displacement reaction.


9) What is irreversible reaction?
Answer: Irreversible  reaction is the chemical reaction in which the products cannot recombine to give back reactants.


10) What is meant by rate of a chemical reaction?
Answer: The positive change in the concentration of a reactant or a product per unit time is called the rate of a chemical reaction.


11) Define decomposition or dissociation reaction.
Answer: The chemical reaction in which a compound is broken down into two or more elements or compounds is called decomposition reaction.


12) Define displacement or replacement reaction. Write down its types.
Answer: The chemical reaction in which an element or radical of a compound is displaced by another element is called displacement reaction. It is of two types:
        (i) Single displacement reaction and 
        (ii) Double displacement reaction


13) Define single displacement reaction.
Answer: The displacement reaction in which only one element or radical is displaced by another element is called single displacement reaction.


14) Define double displacement reaction.
Answer: The chemical reaction in which an element or radical of one compound is mutually displaced by an element or a radical of another compound is called double displacement reaction.

___________________________________________________________________________________

Chemical Reaction || Solved Q/A for S.E.E. - Exam || Part-1

Click here for Chemical Reaction-Practice Sheet

Click here for Long form of Periodic Table

      More questions will be given in another blog post.

    ____________________________________________________________________________________


For any kind of query in any chapter of S.E.E. science, mail your question/s on 

pravin.keshari.31@gmail.com

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Location: Siddharthanagar, Nepal

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