Questions without an upvoted answer in Unknown Category

 The interplanar spacing of ( $h~ k ~l$ ) planes is $4.5$ nm in a given crystal. For the ( $3h~ 3k ~3l$ ) planes, the interplanar spacing in nm is $\_\_\_\_\_$ (rounded o...

The standard electrode potential of $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$ is $+0.34$ V and $\mathrm{Zn}^{2+} \mid \mathrm{Zn}$ is $-0.76$ V. For the $\mathrm{Zn}\left|\math...

Which one of the following is the major environmental problem associated with the production of coal-bed methane?Contamination of waterEmission of Carbon dioxideGeneratio...

A $\textsf{GaP-GaAs}$ semiconductor $\textsf{LED}$ display has a band gap of $1.9 \: \mathrm{eV}$. The wavelength of emitted light in $\mu \mathrm{m}$ is (rounded off to ...

A diffraction pattern is obtained from a powdered sample of a pure element, which has $\textsf{FCC}$ crystal structure. If $x$ and $y$ are the Bragg angles of the first a...

The absolute pressure in a chamber is measured as $400$ mm Hg at a location where the atmospheric pressure is $700$ mm Hg . A vacuum gauge connected to the chamber reads ...

\begin{tabular}{l|l}Q.59 & Specific heat $\left(C_{v}\right)$ of a material was found to depend on temperature as shown \\below. Which of the following statement(s) is/ar...