Physics
Global warming has melted 28 trillion tons of ice in just 23 years
A total of 26 trillion tons of ice has disappeared from the Earth’s surface since 1994. The astonishing decision was made by UK scientists who…
Heat Radiation
Physics
Describe Green house effect from Wien’s law
In colder countries, glass walled houses are constructed to preserve the vegetation’s during the winter season. These are called Green Houses, which serve as effective…
Physics
Define Absorptive Power
The absorptive power of a body (or a surface) is defined as the ratio of the energy absorbed in a given time (or in a…
Chemistry
Define Protogenic Compound
Protogenic compound: Protogenic compound are those which gives proton in non aqueous media. On the basis of proton interaction, solvents are of four types, (i)…
Chemistry
Explain the Ionic Product of Water
The ionic product of water The dissociation of water H2O ↔ H+ + OH– According to law of mass action K = [H+] [OH–] /…
Chemistry
Determination of PH of the Acid Solution
Sample Question: Take some Ethanol and Oxidizes Ethanol in presence of KMnO4 and produce 0.01 M axid. The acid react with strong base and produce 0.01 M…
Chemistry
Why Equilibrium Constant depends on the Temperature?
Equilibrium Constant depends on the Temperature. Hydrogen, H is the element which has no neutron. Let, the reaction: N2 (g) + 3 H2 (g) ↔…
Chemistry
Dissociation of Phosphorus Pentachloride decreases with increasing pressure
At constant temperature, the dissociation of Phosphorus Pentachloride decreases with increasing pressure. The reaction: PCl5↔ PCl3 + CO2 no. of moles → 1 …
Chemistry
Explain the concept of Exchange Electron
The idea of exchanging electron, x2 (g) + 3y2 (g) → 2xy3 This reaction is known as oxidation reduction reaction, The actual reaction, N2 (g)…
Chemistry
What is Endothermic Reaction?
Endothermic reaction: Endothermic reaction is the reaction where heat energy absorbed. CaCO3 (s) →∆→ CaO (s) + CO2 (g) ∆H298K = + 178 Kj mol-1.…
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