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प्रश्न
| Column A | Column B | ||
| i | eosin | 1 | losing hydrogen |
| ii | oxidation | 2 | synthetic indicator |
| 3 | losing oxygen | ||
| 4 | natural indicator |
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उत्तर
| Column A | Answers | ||
| i | eosin | 2 | synthetic indicator |
| ii | oxidation | 1 | losing hydrogen |
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संबंधित प्रश्न
Why do HCl, HNO3, etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character?
The litmus paper or the litmus solution is obtained from ________ plant
(A) Moss
(B) Lichen
(C) Rose
(D) Hibiscus
Complete and balance the following chemical equations
Na2 CO3 (s) + HCI (aq) →
Complete and balance the followingchemicalequations:
NaHCO3 (S) + HCI (aq) →
What ions are present in the solutions of following substances? (write the symbols only)
Potassium hydroxide
Wasp stings can be treated with:
(a) baking soda
(b) vinegar
(c) washing soda
(d) milk of magnesia
Hydrochloric acid reacts with a metal X to form a gas Y which burns with a 'pop' sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.
Name X and Y
What would be the colour of litmus in a solution of sodium carbonate?
Explain why, sodium hydrogencarbonate is used as an antacid.
What does a soda-acid type fire extinguisher contain? How does it work? Explain the working of a soda-acid fire extinguisher with the help of a labelled diagram.
Choose the correct alternative and rewrite the following sentence.
Phenolphthalein is ___________ type of indicator.
When _______________ is passed through fresh lime water, it turns milky.
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue?
Common salt besides being used in kitchen can also be used as the raw material for making
- washing soda
- bleaching powder
- baking soda
- slaked lime
Which of the following are present in a dilute aqueous solution of hydrochloric acid?
______ change the colour of the indicators.
What property do acids and bases have in common? Explain it with an example.
Consider the following salt:
YCl
What would be the pH of the solution if, in YCl, Y is sodium? Give a reason for your answer.
Consider the following salt:
\[\ce{ZCO3}\]
What would be the change in colour in blue litmus if \[\ce{ZCO3}\] is added to it and Z is potassium?
