A. Silicon doped with boron is an n-type semiconductor
B. Silicon doped with arsenic is a p-type semiconductor
C. Metals are good conductors of electricity
D. Electrical conductivity of semiconductors decreases with increasing temperature
Which of the following set of variables give a straight line with a negative slope when plotted ?<br>(P - vapour pressure, T = Temperature in K)
Three faradays of electricity was passed through an aqueous solution of iron(II) bromide.The weight of iron metal(at.wt=56) deposited at the cathode is(in grams):
The bonds in K4Fe(CN)6 are:
Which one of the following equations represents the variation of viscosity coefficient (η) with temperature (T) ?
∆x is given by ∆x=(Hydrogen energy-Lattice energy). For a salt ∆x is found to be 500 kcal mol<sup>-1</sup>.Then on increasing the temperature, its solubility in water
If the length of the unit cell is 5 A<sup>o</sup>. the smallest distance in A<sup>o</sup> between the two neighbouring metal atoms in a face centred cubic lattice is
The weight in grams of a non-volatile solute (M.wt:60) to be dissolved in 90 g of water to produce a relative lowering of vapour pressure of 0.02 is
9.8 g of H2SO4is present in two litres of a solution.The molarity of the solution is: