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
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 | ....................... |
Explain, with example, how the physical states of the reactants and products can be shown in a chemical equation.
Write the balanced equations for the following reaction, and add the state symbols:
Magnesium carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water.
State one characteristic of the chemical reaction which takes place when lemon juice is added gradually to potassium permanganate solution.
Balance the following equation:
Fe2O3 + CO → Fe + CO2
Write word equation for the following molecular equation:
\[\ce{N2 + 3H2 ⇌[Fe - 450°C][200 atoms] 2NH3 + \triangle}\]
Word equation:
State why [+ Δ] indication is seen after NH3.
State what 200 atmospheres – indicates.
State the function of Fe in the above reaction.
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:
one product
Balance the following simple equation:
KBr + Cl2 → KCl + Br2
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
Fe2O3 + 2H2 → 2Fe + 3H2O
