JEE MAIN - Chemistry (2024 - 31st January Evening Shift - No. 25)
The values of conductivity of some materials at $298.15 \mathrm{~K}^{-1} ~\text{in} ~\mathrm{Sm}^{-1}$ are $2.1 \times 10^3$,
$1.0 \times 10^{-16}, 1.2 \times 10,3.91,1.5 \times 10^{-2}, 1 \times 10^{-7}, 1.0 \times 10^3$.
The number of conductors among the materials is _____________.
$1.0 \times 10^{-16}, 1.2 \times 10,3.91,1.5 \times 10^{-2}, 1 \times 10^{-7}, 1.0 \times 10^3$.
The number of conductors among the materials is _____________.
Answer
4
Explanation
Conductivity (S m$$^{-1}$$)
$$\left.\begin{array}{l} 2.1 \times 10^3 \\ 1.2 \times 10 \\ 3.91 \\ 1 \times 10^3 \end{array}\right\} \text { conductors at } 298.15 \mathrm{~K}$$
$$1 \times 10^{-16} \text { Insulator at } 298.15 \mathrm{~K}$$
$$\left.\begin{array}{l} 1.5 \times 10^{-2} \\ 1 \times 10^{-7} \end{array}\right\} \text { Semiconductor at } 298.15 \mathrm{~K}$$
Therefore number of conductors is 4.
Comments (0)
