Advertisements
Advertisements
प्रश्न
| Reactants | Products | Type of chemical reaction |
| BaCl2(aq) + ZnSO4(aq) | H2CO3(aq) | Displacement |
| 2AgCl(s) | FeSO4(aq) + Cu(s) | Combination |
| CuSO4(aq) + Fe(s) | BaSO4↓ + ZnCl2(aq) | Decomposition |
| H2O(l) + CO2(g) | 2Ag(s) + Cl2(g) | Double displacement |
उत्तर
| Reactants | Products | Type of chemical reaction |
| BaCl2(aq) + ZnSO4(aq) | BaSO4↓ + ZnCl2(aq) | Double displacement |
| 2AgCl(s) | 2Ag(s) + Cl2(g) | Decomposition |
| CuSO4(aq) + Fe(s) | FeSO4(aq) + Cu(s) | Displacement |
| H2O(l) + CO2(g) | H2CO3(aq) | Combination |
APPEARS IN
संबंधित प्रश्न
Define; catalyst.
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{NH3_{(g)} + HCl_{(g)} -> NH4Cl_{(s)}}\]
Define precipitation.
Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.
Name the type of chemical reaction shown by the following equation:
CaCO3 → CaO + CO2
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
To prevent rusting, a layer of ______ metal is applied on iron sheets.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Potassium fluoride
Give an example of the following chemical change.
A reaction where colour change is noticed
What do you observe when Cobalt chloride paper is introduced in water vapour.
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Give balanced equation for the following conversion affected by heat alone on the substance:
Copper carbonate to copper oxide
Give balanced equation for the following conversion affected by heat alone on the substance:
Ammonium dichromate to nitrogen
Give two examples where a chemical reaction is accompanied by a change in colour of the reactants and products on completion of the reaction.
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
Higher order Thinking question
A very hot glass on putting in cold water cracks. What does this change indicate?
Assertion: The formation of iron oxide from iron is a chemical change.
Reason: For the rust to form from iron, it must be exposed to air and water.
Burning of paper is a ______ change.
Two chemical species X and Y combine together to form a product P which contains both X and Y
\[\ce{X + Y -> P}\]
X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?
(i) P is a compound
(ii) X and Y are compounds
(iii) X and Y are elements
(iv) P has a fixed composition
Which of the following is a chemical change?
Explain how the painting of an iron gate prevents it from rusting.
