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प्रश्न
Name a black metallic oxide which reacts with hydrochloric acid to give a coloured solution.
उत्तर
Manganese dioxide
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संबंधित प्रश्न
Complete and balance the following reaction, state whether dilute or conc. acid is used.
\[\ce{Pb3O4 + HCl ->}\]
Name the following: A greenish yellow gas.
Choose the correct answer from the options given below:
Which of the following statement is not correct ?
Name the gas evolved when dilute hydrochloric acid is added to: Lead (II) sulphide
How will you identify?
Chlorine gas
A solution of hydrogen chloride in water is prepared. The following substances are added to separate portions of the solution:
| S. No. | Substances added | Gas evolved | Odour |
| 1. | Calcium carbonate | _________ | _________ |
| 2. | Magnesium ribbon | _________ | _________ |
| 3. | Manganese (IV) oxide with heating | _________ | _________ |
| 4. | Sodium sulphide | _________ | _________ |
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D and E.
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D and E.
Complete and balance the following reaction, state whether dilute or conc. acid is used.
\[\ce{NH4OH + HCI->}\]
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D and E.
