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Q. Show the Occurrence of the f-block element? Apart from promethium which is unstable and is found in traces in uranium ores, all the lanthanides usually occur together. Altho
Tranquillizer or Hypnotics: The chemical substances employed for the treatment of stress, mild and harsh mental diseases are called tranquillizers. These are employed to relea
Potassium permanganate is prepared from pyrolusite (MnO 2 ) . Pyrolusite is fused with KOH in the presence of atmospheric oxygen or an oxidising agent like potassium nitrate or po
A house is air conditioned using solar energy. Solar radiation heats a pressurized tank such that the temperature is maintained at 175 o C. 1500 kJ must be extracted from the hou
What are three modifications to a polymer that can make it transparent? How will these modifications affect the mechanical properties of the polymer?
What are hormones? State the function of the following hormones: (a) Testosterone (b) Oxytocin
While studying evolution, a student comes across a cladogram that includes clades like amphibia, reptilia, aves, and mammalia. What must be the basal clade?
what are some instruments used in electrogravimetry?
explain aldehydes
Determine the rate constant from the concentration-time dependence: Time (s) [Reactant](M) 0.0 0.0451 2.0 0.0421 5.0 0.0376 9.0 0.0316 15 0.0226 Use SI units, that is, seconds fo
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