Advertisements
Advertisements
प्रश्न
Why do fire flies glow at night ?
Advertisements
उत्तर
Fire flies are associated with certain protein. In the presence of a enzyme, the protein undergoes aerial oxidation. The reaction is accompanied by emission of light. As a result, fire flies glow at night.
APPEARS IN
संबंधित प्रश्न
What information do you get from the following chemical equation:
Zn(s) + 2HCl (dil) → ZnCl2 (aq) + H2(g)
Balance the following equation:
`Fe+ H_2O → Fe_3 O_4+H_2`
Balance the following equation. Also name the products formed.
`Mg + O_2 → MgO`
Balance the following equation. Also name the products formed.
`Na + H_2 O → Na OH + H_2`
Balance the following equation. Also name the products formed.
`Zn+ HCI → ZnCI _2 + H_2`
What is the chemical equation. How is it represented?
State the information provided by a chemical equation.
Write a balanced molecular equation for the following word equation:
\[\ce{Calcium + water->Calcium hydroxide + hydrogen}\]
Balance the following equation:
\[\ce{Al + H2O->Al2O3 + H2}\]
Balance the following equation:
\[\ce{H2S + Cl2->S + HCl}\]
Balance the following important equation:
\[\ce{Pb3O4 + HCl -> PbCl2 + H2O + Cl2}\]
Balance the following important equation:
Ca(HCO3)2 + HNO3 → Ca(NO3)2 + H2O + CO2
Before burning in air, the magnesium ribbon is cleaned by rubbing with sand paper to:
Why is it important to balance a skeletal chemical equation?
Which of the following is(are) an endothermic process(es)?
- Dilution of sulphuric acid
- Sublimation of dry ice
- Condensation of water vapours
- Evaporation of water
Complete the missing component /variable given as x and y in the following reactions
`"Zn"("s") + "H"_2"SO"_4("aq") -> "ZnSO"_4(x) + "H"_2("y")`
Which among the following change is exothermic or endothermic in nature?
Decomposition of ferrous sulphate
Which among the following change is exothermic or endothermic in nature?
Dissolution of sodium hydroxide in water
Complete and balance the following equation:
\[\ce{CuSO4 + NH3OH ->}\]
