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प्रश्न
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
Give at least two tests to differentiate between the following gases.
HCl and ammonia
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उत्तर
| Test | hydrogen chloride (HCl) | Ammonia (NH3) |
|---|---|---|
| 1. Conc. HCl glass rod test | A glass rod dipped in concentrated HCl is brought near the gas. No white fumes are formed. | A glass rod dipped in concentrated HCl is brought near the gas. Dense white fumes of ammonium chloride are formed. |
| 2. Nessler’s reagent test | No action with Nessler’s reagent. | Turns Nessler’s reagent from colourless to pale brown. |
संबंधित प्रश्न
Hydrogen is combustible as well as a supporter of combustion.
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Multiple Choice Question
Hydrogen is
Write the balanced equation and give your observation when the following metal reacts:
Sodium with cold water
Give the balanced equation of the reaction.
Choose terms from the options given in brackets to complete this sentence.
A metal …………….. hydrogen in the activity series gives hydrogen with …………… acid or …………… acid.
(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric).
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen is a combustible gas.
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen does not support combustion.
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Hydrogen sulphide is ______ to sulphur since the reaction involves ______ of hydrogen.
Give reason for the following:
The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
Match the statements in List I with the appropriate answer in List II.
| List I | List II |
| 1. An atom of hydrogen | A: Chromic oxide |
| 2. A strong oxidising agent | B: Ammonia |
| 3. A promoter used in Bosch process | C: Iron |
| 4. A chemical used in the manufavture of fertilizers | D: One electron |
| 5. The catalyst used in production of a basic gas from nitrogen. | E: Dilute nitric acid |
What do the following symbols [or formula] denote : 2H ; H2 ; H+. [two atoms, molecule, ion]
Write a correctly balanced equation for the following:
When steam is passed over red hot iron.
Explain the following:
Two jars of H2 are collected – “one burns quietly and the other does not”.
What do the following symbols represent : 2H and H2.
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
