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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.
When the azimuthal quantum number has a value of l=0 , the shape of the orbital is: (1) Rectangular (2)Spherical (3)Dumbbell (4)Unsymmetrical Ans: Spherical
Q. Extensive chemistry of the boron hydrides? The extensive chemistry of the boron hydrides finds no parallel with the hydrides of heavier elements of Group 13. Out of the four
Schiff's reaction and Tischenko reaction (a) Schiff's reaction: this reaction restores pink colour to Schiff's reagent (aqueous solution of p-rosaniline hydrochloride decolouri
Explain experimental evidence to demonstrate the existence of ferromagnetic domains. Temperature increases, thermal motion, or entropy, competes with ferromagnetic tendency for
2Zns + 3O 2 ---------> 2ZnO + 2SO 2 ZnCO 3 -------------> ZnO + CO 2 ZnO +C ------> Zn +CO ZnO + CO -----------> Zn + C0 2
Electrovalent bond formation depends on: (1) Ionization energy (2) Electron affinity (3) Lattice energy (4) All the three above Ans: All the three above
assignment help for nitrenes
carbolic acid from benzene
maximum no of unpaired electrons a)mn2+ b)ti3+ c)v3+ d)fe2+
Q. Explain about coordination compound? These compounds are usually formed by the donation of pair of electrons to the central metal ion by the group of ions or molecules. The
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