Advertisements
Advertisements
प्रश्न
Match column A with column B.
| Column A | Column B |
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green. | (ii) Iodine |
| (c) Red compound changes to brown and then yellow. | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold. | (iv) Copper sulphate |
| (e) Violet solid changes to violet vapours. | (v) Red Lead |
Advertisements
उत्तर
| Column A | Column B |
| (a) Blue salt changes to white and then black | (iv) Copper sulphate |
| (b) Orange coloured compound changes to green. | (i) Ammonium dichromate |
| (c) Red compound changes to brown and then yellow. | (v) Red Lead |
| (d) White to yellow when hot and white when cold. | (iii) Zinc Nitrate |
| (e) Violet solid changes to violet vapours. | (ii) Iodine |
APPEARS IN
संबंधित प्रश्न
Balance the chemical equation.
\[\ce{HNO3 +Ca(OH)2 -> Ca(NO3)2 + H2O}\]
Balance the following equation:
\[\ce{NH3 + CuO -> Cu + N2 + H2O}\]
Carbon monoxide reacts with hydrogen under certain conditions to form methanol (CH3OH). Write a balanced chemical equation for this reaction indicating the physical states of reactants and product as well as the conditions under which this reaction takes place.
With the help of an appropriate example, justify that some of the chemical reactions are determined by the evolution of a gas.
Give a chemical equation for the reaction involved in the above case.
The chemical equations are balanced to satisfy one of the following laws in chemical reactions. This law is known as:
Write symbolic representation for the following word equation and balance them :
Calcium carbonate → Calcium oxide + Carbon dioxide.
Balance the following equation:
H2O + Cl2 → HCl + O2
Balance the following simple equation:
K + H2O → KOH + H2
Balance the following simple equation:
Zn + HCl → ZnCl2 + H2
Write a balanced equation for the following word equation:
Calcium hydroxide + Ammonium chloride → Calcium chloride + Water + Ammonia
