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Acids Bases and Salts Test - 13

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Acids Bases and Salts Test - 13
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  • Question 1
    1 / -0
    In which of the following, neutralisation reaction takes place?
    Solution
    $$\textbf{Concept Applied:}$$ Neutralisation reaction happens between acid and base and salt is formed in the process.

    $$\textbf{Correct Option:}$$ B

    $$\textbf{Explanation for correct option:}$$ To tread acidity, an antacid is used, which is an alkaline solution that neutralises the acid.

    $$\textbf{Explanation for incorrect options:}$$ 
    (A) Breakdown of glucose is metabolism. It is not a neutralisation reaction.
    (C) Photosynthesis is not a neutralisation reaction. It is a combination reaction.
    (D) Incorrect statement.
  • Question 2
    1 / -0
    From which plant is litmus paper or litmus solution obtained?
    Solution
    Litmus is a water soluble mixture of different dyes extracted from lichens.
  • Question 3
    1 / -0
    Which of the following acid is present naturally in the spinach? 
    Solution
    In tomatoes, the acid present naturally is oxalic acid. 
  • Question 4
    1 / -0
    Which of the following is not a property of acid?
    Solution
    A. True. They are sour in taste.

    B. True. They turn blue litmus to red.

    C. False. Turmeric remains yellow in an acidic medium. It does not change color.
  • Question 5
    1 / -0
    Which of the following substance enters our body when a red ant bites us?
    Solution
    The acid produced by ants is called formic acid. The name comes from the Latin word for ant - formica.
  • Question 6
    1 / -0
    Turmeric is a natural indicator. On adding its paste to acid and base separately, which colour would be observed ?
    Solution
    Turmeric is yellow in acidic and neutral solutions; is bright red in basic solutions. 
  • Question 7
    1 / -0
    Product of neutralization reactions are always :
    Solution
    The product of a neutralisation reaction is salt and water. 

    For example, hydrochloric acid reacts with sodium hydroxide to form sodium chloride salt and water. 

    $$ { H }Cl\quad +\quad NaOH\quad \rightarrow \quad NaCl\quad +\quad { H }_{ 2 }O $$

    Hence the option $$D$$ is correct.
  • Question 8
    1 / -0
    China rose indicator turns acidic solution to:
    Solution
    China rose is a red-colored natural indicator that turns the acidic solution into a magenta color or dark pink.

    Hence option $$A$$ is correct.
  • Question 9
    1 / -0
    Which of the following is acid-base indicator?
    Solution
    Turmeric is a naturally occurring yellow colour compound. It is an acid-base indicator, turmeric compound remains yellow when acid or neutral solutions are added to it. When basic solutions such as sodium hydroxide are added to it, the solution turns pinkish-red.
  • Question 10
    1 / -0
    Which of the following acid(s) is/are present in vinegar and lemon?
    Solution
    Acitic acid is present in vinegar and citric acid is present in lemon.
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