A solution reacts with crushed egg-shells to give a gas that turns lime water milky. The solution contains
$NaCl$
$LiCl$
$KCl$
$HCl$
The solution contains $HCl$.
Name the sodium compound which is used for softening hard water.
How is the concentration of hydroxide ions $(OH^-)$ affected when excess base is dissolved in a solution of sodium hydroxide ?
You have been provided with three test tubes. One of them contains distilled water and the other two contaln an acidic solution and a basic solution, respectlvely. If you are glven only red litmus paper. how will you identify the contents of each test tube ?
Why does distilled water not conduct electricity, whereas rain water does ?
Fresh milk has a $pH$ of $6$. How do you think the $pH$ will change as it turns into curd ? Explain your answer.
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