Advertisements
Advertisements
प्रश्न
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
Advertisements
उत्तर
`"H"_2"S"` + `"CI"_2` `→` 2HCI + S
APPEARS IN
संबंधित प्रश्न
Give reason .
A person suffering from acidity is advised to take an antacid.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Reduction is a chemical reaction in which there is
- removal of hydrogen
- removal of oxygen
- addition of oxygen
- none of these
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
Balancing a chemical equation is based on
What do you observe? When
Barium chloride is added to sodium sulphate solution
Complete and balance the following reaction:
\[\ce{Pb(NO3)2 ->[\Delta]}\]
Name: Two nitrates that do not produce nitrogen dioxide on heating.
Give a chemical test to distinguish between the following gases.
SO2 and Cl2
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A coloured substance which leaves a black residue and evolves two gases one of which is acidic and coloured and the other neutral and colourless.
State the following reaction represent oxidation or reduction.
\[\ce{Al->Al+++}\]
Give a balanced equation for the conversion of an ammonium salt to a basic gas.
A reaction between an acid and a base is called ______.
When an aqueous solution of potassium chloride is added to an aqueous solution of silver nitrate, a white precipitate is formed. Give the chemical equation of this reaction.
Chemical change is a temporary change.
Burning of paper is the best example of ______ change.
Give two examples for the following case:
Chemical changes
Heat may evolve or be absorbed during a ______ change.
Write the equation for the process of formation of rust.
