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The wall thickness can be minimized by insulation layer
The wall thickness can be minimized by insulation layers. A typical wall having of a brick layer that has a thickness of d1 = 15 cm at the outside, a concrete layer with a thickness of d2 = 10 cm, an insulation layer (polystyrene foam) of thickness d3 and a gypsum layer with a thickness of d4 = 5 cm on the inside of the wall. Measure the thickness of the insulation layer and the total thickness of the wall to fulfil the needs of an energy-saving house.
No. of KMnO4 required to oxidise 1 mole of Fe(C2O2) in acidic medium? Solution) 1 mole of KMnO4 is required for oxidation of 1 mole of Fe(C2O2). 2KMno4+2Fe(C2O2)+6H2SO4 = K2S
Electrophilic Addition Reactions (A) Such types of reactions are generally provided by alkynes and alkenes. (B) Electrophilic addition reactions of alkynes and alkenes are m
A single-effect evaporator is used to concentrate 60000 kg h-1 of a 40 wt % NaOH solution which is fed to the evaporator at 40°C. The concentrated liquid is a 55 wt % NaOH solut
The number of neutron in tritium is : (1) 1 (2) 2 (4) 3 (4) 0 Ans: 2
Q. Complexation Behaviour of Group 13? As compared to the elements of Groups 1 and 2, elements of Group 13 show a greater tendency of complex formation. Because of lack of d-or
Imp reactions of p block
Determination of oxalate in copper complex
What is meant by the term Valence
Electronic configuration of deuterium atom is: (1) 1s 1 (2) 2s 2 (3) 2s 1 (4) 1s 2 Ans: 1s 1
If the atomic weight of an element is 23 times that of the lightest element and it has 11 protons, then it contains : (1)11 protons, 23 neutrons, 11 electrons (2)11 protons,
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