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प्रश्न
Write any four physical properties of acids.
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उत्तर
- Acids are sour in taste.
- They are corrosive in nature. Strong acids can spoil substances like human skin, clothes, and paper.
- Generally, acids exist in a liquid state but few acids exist in a solid-state too. E.g. Benzoic acid.
- Acids are colorless.
- Acids change the color of the indicators. Blue litmus paper turns red and methyl orange turns pink when treated with acids.
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संबंधित प्रश्न
When phenolphthalein is added to NaOH, the colour of the solution will become _________.
- colourless
- red
- pink
- yellow
From which plant is litmus paper or litmus solution obtained?
- Moss
- Rose
- Hibiscus
- Lichen
10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralise it will be:
Complete and balance the following chemical equation:
\[\ce{NaHCO3_{(s)} + HCl_{(aq)} ->}\]
On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue-green.
Predict the new compound formed which imparts a blue-green colour to solution.
Which of the following gives the correct increasing order of acidic strength?
______ & ______ metals do not react with HCl or HNO3.
The formula of bleaching powder is ______.
The taste of acid is ______.
Consider the following salt:
NH4X
If in salt NH4X, X is nitrate, then its solution will give what colour with a universal indicator? Why?
