Which of the following covelent network solids is referred to as pencil lead?
Which of the following pairs would have a higher negative electron gain enthalpy ? {:((i)N or O, (ii) For Cl),((iii)Br or I, (iv) B or Al):}
Which of the following is arranged in increasing order of ionic mobility of ions in their aqueous solutions? (A) \(I^{-} (B) \(F^{-} (C) \(F^{-} (D) \(F^{-} < Cl^{-} < I^{-} < Br^{-}\)
Which one of the following has the lowest boiling point? \(CH_{3}\)Cl \(C_{2}H_{5}\)Cl \(C_{2}H_{5}\)Br \(C_{2}H_{5}\)I
Which of the following symbols are not acceptable ? (i) ._(35)^(79)Br (ii) .^(79)Br (iii) ._(79)^(35)Br (iv) ._(35)Br
Which of the following statement is correct regarding following process ? (i) Cl overset(E.A)to Cl^(-) " " (ii) Cl^(-) overset(I.E.)to Cl (iii) Cl overset(I.E)to Cl^(+) " " (iv) Cl^(+) overset(I.E.)to Cl^(2+)
Which of the following reaction is correct for a given electrochemical cell at 25^(@)C ? (PtBr_(2)(g)Br^()(g)||Cl^(-)(aq) Cl_(2) (g)pt
