Advertisements
Advertisements
प्रश्न
Which of the following is not an endothermic reaction?
पर्याय
\[\ce{CaCO3 -> CaO + CO2}\]
\[\ce{2H2O -> 2H2 + O2}\]
\[\ce{6CO2 + 6H2O -> C6H12O6 + 6O2}\]
\[\ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}\]
Advertisements
उत्तर
\[\ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}\]
Explanation:
This equation represents cellular respiration, a vital process where glucose breaks down in the presence of oxygen to release energy for our bodies. Because it releases energy rather than absorbing it, it is highly exothermic.
APPEARS IN
संबंधित प्रश्न
On what basis is a chemical equation balanced?
How will you indicate the following effect in a chemical equation?
Exothermic reaction
Balance the following equation:
\[\ce{HNO3 + Ca(OH)2 -> Ca(NO3)2 + H2O}\]
Name the various types of chemical reactions.
Write word equation for the following skeletal equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Balance the following chemical equation :
FeS + HCl → FeCl2 + H2S
Balance the following chemical equation :
Na2CO3 + HCl → NaCI + H2O + CO2
Write your observation for the following chemical reaction and name the product formed:
When sugar is heated.
Write symbolic representation for the following word equation and balance them :
Aluminium + Chlorine → Aluminium chloride.
Balance the following equation .
N2 + O2 → NO
State the information conveyed by the following equation:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2 ↑
Write the chemical equation for the following word equation and balance them.
Nitrogen + Oxygen → Nitrogen monoxide
Sodium chloride reacts with silver nitrate to produce silver chloride and sodium nitrate
Write the equation.
Check whether it is balanced, if not balance it.
Find the weights of reactants and products.
State the law which this equation satisfies.
\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]
State what is a ‘balanced equation’.
Balance the following simple equation:
Fe + H2O ⇌ Fe3O4 + H2
Balance the following simple equation:
H2 + O2 → H2O
Fill in the blank with the correct word from the options given below:
A chemical equation is a shorthand form for a _______ change.
Write scientific reason.
Adding zinc particles to a solution of copper sulphate makes the blue solution colorless.
Match the columns.
| Reactants | Products | Types of chemical reaction | ||
| 1. | MgH2 | → | Mg + H2 | Endothermic |
| 2. | 2H2S + SO2 | → | 3S + 2H2O | Oxidation |
| 3. | CaO + H2O | → | Ca(OH)2 + heat | Exothermic |
| Redox | ||||
Balance the following chemical equation.
- Na + O2 → Na2O3
- Ca + N2 → Ca3N2
- N2 + H2 →NH3
- CaCO3 +HCl → CaCl2 + CO2 +H2O
- Pb(NO3)2 → PbO + NO2 + O2
