Class 10

Acids, Bases and Salts question bank (Science)

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Q1.

You have been provided with three test tubes. One of them contains distilled water,and the other two contain an acidic solution and a basic solution,respectively. If you are given only red litmus paper,how will you identify the contents of each test tube?

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Q2.

Sodium hydrogencarbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved?
$(i)$ It turns lime water milky
$(ii)$ It extinguishes a burning splinter
$(iii)$ It dissolves in a solution of sodium hydroxide
$(iv)$ It has a pungent odour

(A)

$(i)$ and $(ii)$

(B)

$(i)$,$(ii)$ and $(iii)$

(C)

$(ii)$,$(iii)$ and $(iv)$

(D)

$(i)$ and $(iv)$

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