Advertisements
Advertisements
प्रश्न
Name the following:
Two non-metal which react explosively when brought in close contact.
Advertisements
उत्तर
Iodine and phosphorous
APPEARS IN
संबंधित प्रश्न
How will you indicate the following effect in a chemical equation?
Endothermic reaction
Correct and balance the following equation:
\[\ce{Ca + H2O -> CaOH + H}\]
When a mixture of gases X and Y is compressed to 300 atm pressure and then passed over a catalyst consisting of a mixture of zinc oxide and chromium oxide (heated to a temperature of 300°C), then an organic compound Z having the molecular formula CH4O is formed. X is a highly poisonous gas which is formed in appreciable amounts when a fuel burns in a limited supply of air; Y is a gas which can be made by the action of a dilute acid on an active metal; and Z is a liquid organic compound which can react with sodium metal to produce hydrogen gas.
- What are X, Y and Z?
- Write a balanced chemical equation of the reaction which takes place when X and Y combine to form Z. Indicate the conditions under which the reaction occurs.
Balance the following equation:
Pb3O4 + HCl → PbCl2 + H2O + Cl2
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
NH3 + HCl ⇌ NH4Cl
Give an example of a chemical equation in which two reactants form:
four product
Balance the following simple equation:
Al + H2O → Al2O3 + H2
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write names of reactants and products of chemical reaction.
Which among the following is(are) double displacement reaction(s)?
- `"Pb" + "CuCl"_2 -> "PbCl"_2 + "Cu"`
- `"Na"_2"SO"_4 + "BaCl"_2 -> "BaSO"_4 + 2"NaCl"`
- `"C" + "O"_2 -> "CO"_2`
- `"CH"_4 + 2"O"_2 -> "CO"_2 + 2"H"_2"O"`
What is a product in a chemical equation?
