During electrolysis, the amount of substance deposited depends on the quantity of electricity passed. This is:
A. Graham's law
B. Faraday's first law
C. Ohm's law
D. Faraday's second law
Answer: Option B
Solution (By JKSSB Mock Tests)
Faraday's first law of electrolysis: Mass of substance deposited or liberated is proportional to the charge passed (m = ZQ). Z is electrochemical equivalent. Second law relates masses of different substances to equivalent weights for same charge. Ohm's law is V=IR, Graham's law for diffusion. Faraday's laws are quantitative.
Explanation:
Copper pyrites, also known as chalcopyrite, is the most important and abundant ore of copper. Its chemical formula is CuFeS2. Bauxite is the ore of aluminum, cinnabar is the ore of mercury, and haematite is the primary ore of iron.
Explanation:
In 1913, Niels Bohr modified Rutherford's model to explain atomic stability and emission spectra. He introduced the concept of quantized electron orbits (or energy levels), stating that electrons revolve in specific, fixed orbits without radiating energy, and they only emit or absorb energy when jumping between these discrete levels.
Explanation:
Rate ∝ 1/√M. Molar masses: CO₂=44, SO₂=64, CH₄=16, Cl₂=71. Methane has the smallest molar mass, so it diffuses fastest. Graham's law applies.
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