Advertisements
Advertisements
प्रश्न
Which among the following statement(s) is(are) true? ‘Exposure of silver chloride to sunlight for a long duration turns grey due to
- The formation of silver by the decomposition of silver chloride.
- sublimation of silver chloride.
- decomposition of chlorine gas from silver chloride.
- oxidation of silver chloride.
पर्याय
(i) only
(i) and (iii)
(ii) and (iii)
(iv) only
Advertisements
उत्तर
(i) only
Explanation -
Silver chloride is sensitive to sun light and decomposes slowly to give silver which is grey in colour and chlorine.
`2"AgCl" overset("Sun light")(->)underset(("Grey"))(2"Ag") + "Cl"_2`
APPEARS IN
संबंधित प्रश्न
How will you indicate the following effect in a chemical equation?
Endothermic reaction
Write a complete balanced equation for the following reaction:
\[\ce{Sulphur dioxide (gas) + Oxygen (gas) -> Sulphur trioxide (gas)}\]
Balance the following equation:
\[\ce{H2O2 -> H2O + O2}\]
While performing the experiment with raisins to determine the percentage of water absorbed by them, a student made following measurements:
Mass of water in the beaker = 40 g
Mass of raisins before soaking = 5 g
Mass of raisins after soaking for 2 hours = 8 g
Mass of water left in the beaker after the experiment = 35 g
The percentage of water absorbed by raisins is:
To determine the percentage of water absorbed by raisins, raisins are soaked in water for:
Balance the equation stepwise.
NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l)
What do the following symbol stand for?
2H2
Balance the following equation:
P + HNO3 → NO2 + H2O + H3PO4
Write the balanced chemical equation of the following reaction.
barium chloride + sulphuric acid → barium sulphate + hydrochloric acid
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 |
Write the name and molecular formula of a carbon compound having its name suffixed with "-ol" and having two carbon atoms in its molecule. With the help of a chemical equation indicate what happens when this compound is heated with excess conc. H2SO4.
Give word equation for the following chemical reaction and give the names of the product formed.
Zn + S → ZnS
Give word equation for the following chemical reaction and give the names of the product formed.
NH3 + HCl→ NH4Cl
An element X is trivalent. Write the balanced equation for the combustion of X in oxygen.
Balance the following simple equation:
Al + N2 → AlN
CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]
State the information provided by the above chemical equation.
Write a balanced equation for the following word equation:
Potassium bromide + Chlorine → Potassium chloride + Bromine
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
C2H5OH + 3O2 → 2CO2 + 2H2O
Write three steps of writing chemical equations with example?
Write the skeleton equation for the following word equation and then balance them.
- Carbon + Oxygen → Carbon dioxide.
- Phosphorus + Chlorine → Phosphorus pentachloride.
- Sulphur + Oxygen → Sulphur dioxide.
- Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.
