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Heat Conductivity
When considering the design of houses, the heat conductivity by walls, roofs, and the floor plays an significant role. The heat conductivities (λ) of some building materials are explained in Table 1.
The heat loss can be minimized by using a layer of polystyrene foam. Calculate the heat loss by a 10 cm polystyrene insulation foam. The wall area again is 150 m2.
Bond formed in crystal by anion and cation is: (1) Ionic (2) Metallic (3) Covalent (4) Dipole Ans: Ionic
#formation of salicylic acidquestion..
Calculate the standard potentials of the Ag 5 and Ag 10 nanoclusters. Define the change in standard potential of silver nanoclusters with particle sizes ranging from very sma
Originally, chewing gum was made from the latex sap of the sapodilla tree (native to Central America). This sap was known as chicle. Other natural gum bases may be used, such as je
Which of the following electronic configuration is not possible: (1) 1s 2 2s 2 (2) 1s 2 2s 2 2p6 (3) [Ar]3d 10 4s 2 4
Alum is a chemical (aluminum potassium sulphate) it tends to be whitish powder with various uses.
Vulcanization: Vulcanization is very widely used in rubber technology to improve the properties such as low tensile strength, plastic nature, thickness etc. by adding some chemica
Discuss "cohesive energy" and "electron affinity". ‘Cohesive energy’: In a chemical bond, it’s the energy required to dissociate a solid into isolated atoms or molecules as ap
What is the chemistry of nitration of naphthalene?
To calculate the e.m.f of the cell when does the nelsons equation is use? Ans) The Nernst equation is useful to measure the e.m.f of the cell when the concentrations of solution
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