Advertisements
Advertisements
प्रश्न
Name the type of chemical reaction shown by the following equation:
2Mg + O2 → 2MgO
Advertisements
उत्तर
2Mg + O2 → 2MgO => Combination reaction.
APPEARS IN
संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Condensation of steam is not a chemical change.
What do you observe when Iron nail is kept in copper sulphate solution for sometime.
FILL IN THE BLANK
In a double decomposition precipitation reaction both the reactants must be ............ soluble.
TRUE \ FALSE
Positively charged electrode is called the anode. True or false ?
TRUE \ FALSE
Temperature at which a liquid starts boiling is known as the boiling point of that liquid. True or false ?
What are biocatalysts ?
Fill in the blank:
The substances which undergo chemical change are called _______
Fill in the blank:
The substances formed as a result of a chemical reaction are called _______
Write true or false.
A chemical equation gives only qualitative information of a chemical reaction.
Balancing a chemical equation is based on
A solution of a substance ‘X’ is used for white washing write the reaction of the substance ‘X’ named in (a) above with water.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Sodium chloride
Write the chemical reaction where the following changes are observed.
Gas is evolved
Complete the following table and write your observations.
|
Hydrogen sulphide |
Ammonia |
Sulphur dioxide |
Hydrogen chloride |
|
|
Shake the gas with red litmus solution |
||||
|
Shake the gas with blue litmus solution |
||||
|
Apply a burning splint to a gas |
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
Distinguish by dilute sulphuric acid.
Copper and magnesium?
Circle the odd one out. Give reason for your choice
______ change results in the change of the substance.
______ is the chemical name of slaked lime.
