Identify the process of refining to obtain pig tin

For the reaction,
\(2 \mathrm{NO}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{NO}_{(\mathrm{g})}+\mathrm{O}_{2(\mathrm{~g})}, \frac{\mathrm{d}\left[\mathrm{NO}_2\right]}{\mathrm{dt}}\) is \(1.3 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{sec}^{-1}\),
What is rate of \(\mathrm{O}_2\) ?

Calculate the standard enthalpy change for synthesis of ammonia gas from following data
i. \(2 \mathrm{H}_{2(\mathrm{~g})}+\mathrm{N}_{2(\mathrm{~g})} \longrightarrow \mathrm{N}_2 \mathrm{H}_{4(\mathrm{~g})} ; \quad \Delta_{\mathrm{r}} \mathrm{H}_1^0=95.4 \mathrm{~kJ}\)
ii. \(\mathrm{N}_2 \mathrm{H}_{4(\mathrm{~g})}+\mathrm{H}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{NH}_{3(\mathrm{~g})} ; \quad \Delta_{\mathrm{r}} \mathrm{H}_2^0=-187 \cdot 6 \mathrm{~kJ}\)

What is the IUPAC name of following compound?

\(3.42 \times 10^{-2} \mathrm{~kg}\) Sugar (molar mass 342 ) is dissolved in water to produce \(234.2 \mathrm{~g}\) of sugar syrup, what is the molality of sugar syrup?

Which of the following expressions for conductivity of solution of an electrolyte is NOT correct?

What is bond order of \(\mathrm{F}_2\) molecule?

A large vessel completely filled with water has two holes ' \(A\) ' and ' \(B\) ' at depths 'h' and '4h' from the top. Hole 'A' is a square of side 'L' and hole 'B' is circle of radius 'R'. If from both the holes same quanitity of water is flowing per second, then side of square hole is

Which of the following regions of transistors are, respectively, heavily dopped and lightly dopped?

If \(\bar{a}=a_1 \hat{i}+a_2 \hat{j}+a_3 \hat{k}, \quad \bar{b}=b_1 \hat{i}+b_2 \hat{j}+b_3 \hat{k}\), \(\overline{\mathrm{c}}=\mathrm{c}_1 \hat{i}+\mathrm{c}_2 \hat{\mathrm{j}}+\mathrm{c}_3 \hat{\mathrm{k}}\) and \(\left[\begin{array}{lll}3 \overline{\mathrm{a}}+\overline{\mathrm{b}} & 3 \overline{\mathrm{~b}}+\overline{\mathrm{c}} & 3 \overline{\mathrm{c}}+\overline{\mathrm{a}}\end{array}\right]\) \(=\lambda\left|\overline{\mathrm{a}} \cdot \hat{\mathrm{i}} \overline{\mathrm{a}} \cdot \hat{\mathrm{j}} \overline{\mathrm{a}} \cdot \hat{\mathrm{k}} \ \overline{\mathrm{b}} \cdot \hat{\mathrm{i}} \overline{\mathrm{b}} \cdot \hat{\mathrm{j}} \overline{\mathrm{b}} \cdot \hat{\mathrm{k}} \ \overline{\mathrm{c}} \cdot \hat{\mathrm{i}} \overline{\mathrm{c}} \cdot \hat{\mathrm{j}} \overline{\mathrm{c}} \cdot \hat{\mathrm{k}}\right|\) then the value of \(\lambda\) is

Match the Column I with Column II.

Column I (Animals)	Column II (Respiratory organs /surface)
1. Spider	a. Internal gills
2. Coelenterates	b. Book lungs
3. Frog	c. Plasma membrane
4. Fishes	d. Lungs
	e. External gills

Choose the correct option

In an NPN transistor \(10^{10}\) electrons enter the emitter in \(10^{-6} \mathrm{~s}\) and \(2 \%\) electrons recombine with holes in base. The current ratios ' \(\alpha\) ' and ' \(\beta\) ' of a transistor are respectively (nearly)

Two satellites 'A' and 'B' are revolving with critical velocities ' \(\mathrm{v}_{\mathrm{A}}\) ' and ' \(\mathrm{v}_{\mathrm{B}}\) ' around the earth, in circular orbits of radii ' \(\mathrm{R}\) ' and ' \(2 \mathrm{R}^{\prime}\), respectively. The ratio \(\frac{\mathrm{V}_{\mathrm{A}}^{\prime}}{\mathrm{V}_{\mathrm{B}}}\) is