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Hydrogenation reactions are facilitated by the use of a transition metal catalyst such as Ni or Pt. Predict the signs of ΔH, ΔS and ΔG when hydrogen gas is adsorbed onto the surface of nickel metal under conditions of constant temperature and pressure
Resistors of 20Ω ,20 Ω and 30Ω are connected in parallel. What resistance must be added in serieswith the combination to obtain a total resistance of 10 . If the complete
Define the merits of ultrasonic magnetostriction method. Merits of ultrasonic magnetostriction method: a. Magnetostrictive materials are simply accessible and inexpensiv
Circular Polarisation Circular polarisation produced from a linearly polarised electromagnetic wave through a quarter-wave plate.
Explain the Process of Phase Changes Matter exists in three forms: as a solid, a liquid or as a gas. These are called phases of matter. If we take a chunk of ice (solid water) fr
What is the hardness of water? How is it expressed? Hardness is the property of water which stops lather formation with soap. This is because of the presence of certain salts o
50 gm of an optically active substance is dissolved in 100 ml of water. A plane polarised light, when passing through 30 cm of the solution, suffers a rotation of 390 in it's plane
Q State Ohm's law. At a steady temperature that the steady current flowing through a conductor is directly proportional to the potential difference between the two ends of the
define the coefficient of friction
A diffraction grating used at normal incidence provides a spectral line of certain order with wavelength 6000A 0 superimpose on another spectral line of wave length 5000A 0 of th
Copper is completely miscible with (A) Nickel. (B) Gold. (C) Hydrogen. (D) Lead. Ans: Copper is completely miscible with gold.
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