Advertisements
Advertisements
प्रश्न
Methyl orange is used as an indicator. It shows colour change in acid, base and neutral substance. Tabulate your result as follows:
| Indicator | Colour change | Inference |
| Methyl Orange | No change | ...................... |
| .................... | Acid | |
| Yellow | ....................... |
Advertisements
उत्तर
| Indicator | Colour change | Inference |
| Methyl Orange | No change | Neutral substance |
| Red | Acid | |
| Yellow | Base |
APPEARS IN
संबंधित प्रश्न
Translate the following statement into a chemical equation and then balance it.
Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.
Write the balanced chemical equation for the following reaction.
\[\ce{Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride}\]
What is meant by a chemical reaction? Explain with the help of an example.
The chemical reaction between quicklime and water is characterised by ______.
A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form a blue precipitate Y. Metal X is used in making electric wires and alloys like brass.
- What do you think metal X could be?
- Write the name, formula and colour of salt XSO4.
- What is the blue precipitate Y?
- Write a chemical equation of the reaction which takes place when salt XSO4 reacts with sodium hydroxide solution. Give the state symbols of all the reactants and products which occur in the above equation.
Zinc oxide reacts with carbon, on heating, to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name
- oxidising agent, and
- reducing agent,
in this reaction.
Name the type of chemical reaction shown by the following equation:
2Mg+ O2 → 2MgO
Write your observation for the following chemical reaction and name the product formed :
When dilute acetic acid is poured on baking soda.
Write your observation for the following chemical reaction and name the product formed :
When an aqueous solution of sodium chloride is mixed with an aqueous solution of silver nitrate.
Balance the following equation :
Fe + O2 → Fe3 O4
To determine the percentage of water absorbed by raisins, raisins are soaked in water for:
In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?
State the information conveyed by the following equation:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2 ↑
Balance the following equation:
MnO2 + HCl → MnCl2 + H2O + Cl2
Balance the following equation:
P + HNO3 → NO2 + H2O + H3PO4
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Iron [III] chloride to ammonium hydroxide.
Give word equation for the following chemical reaction and give the names of the product formed.
Zn + 2HC1→ ZnCl2 + H2
Name the following:
A catalyst which increases the rate of a chemical reaction.
Writing a chemical reaction in brief by using chemical formulae is called as _______.
Complete the following blank in the equation as indicated.
\[\ce{CaH2_{(s)} + 2H2O_{( aq)}-> Ca(OH)2_{(s)} + 2H2_{(g)}}\]
Grams: 42 g + ______ `→` ______ + ______
