Which of the following factors is altered by the addition of a catalyst during a chemical reaction?

In the chemical reaction, \(\mathrm{N}_{2}+3 \mathrm{H}_{2} \rightleftarrows 2 \mathrm{NH}_{3}\) at equilibrium point.

A galvanic cell is constructed using the redox reaction,
\(\frac{1}{2} \mathrm{H}_{2}(g)+\operatorname{AgCl}(s) \rightleftharpoons \mathrm{H}^{+}(a q)+\mathrm{Cl}^{-}(a q)+\operatorname{Ag}(s)\)
it is represented as

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below.
Assertion (A): A molecule of \(\mathrm{SF}_4\) is see-saw shaped, while that of \(\mathrm{CIF}_3\) is T-shaped.
Reason(R): SF\(_4\) has two lone pair of electrons. But CIF\(_3\) has one pair of electrons.

Given below are 4 equations showing Molar conductivities at infinite dilution of various electrolytes. Which one of them represents the correct equation?
\(\begin{aligned}
& \left(\Lambda_m^0\right)_{N a B r}-\left(\Lambda_m^0\right)_{N a C l}=\left(\Lambda_m^0\right)_{\mathrm{KCl}}-\left(\Lambda_m^0\right)_{\mathrm{KBr}} \\
& \left(\Lambda_m^0\right)_{\mathrm{HCl}}+\left(\Lambda_m^0\right)_{\mathrm{KOH}}-\left(\Lambda_m^0\right)_{\mathrm{KCl}}=\left(\Lambda_m^0\right)_{\mathrm{H}_2 \mathrm{O}} \\
& \left(\Lambda_m^0\right)_{\mathrm{KBr}}-\left(\Lambda_m^0\right)_{\mathrm{NaBr}}=\left(\Lambda_m^0\right)_{\mathrm{NaBr}}-\left(\Lambda_m^0\right)_{\mathrm{Nal}} \\
& \left(\Lambda_m^0\right)_{N H_4 \mathrm{Cl}}-\left(\Lambda_m^0\right)_{\mathrm{NH}_4 \mathrm{NO}_3}=\left(\Lambda_m^0\right)_{N H_4 \mathrm{Cl}}-\left(\Lambda_m^0\right)_{N H 4 B r}
\end{aligned}\)

In dilute alkaline solution \(\mathrm{MnO}_4^{-}\)changes to

The statements given below contains assertion and reason. Choose the correct option
Assertion (A): Propene reacts with HBr in presence of organic peroxide gives 1-bromopropane.
Reason(R): The reaction occurs through carbocation intermediate

Consider the lines \(L_1\) and \(L_2\) given by the following vector equations:
\(L_1: \vec{r} = (\hat{i} + \hat{j} - \hat{k}) + \lambda(3\hat{i} + t\hat{j})\)    \(L_2: \vec{r} = (4\hat{i} + a\hat{j} - \hat{k}) + \mu(2\hat{i} + 3\hat{k})\)
If \(a = -2\) and the lines intersect, then the value of 't' is:

- The locus of the mid-points of the line joining the focus and point on the parabola \(y^{2}=4 a x\) is a parabola with the equation of directrix as

The resistance of a heating element is found to be \(120 \Omega\) at room temperature which is \(20^{\circ} \mathrm{C}\). If the temperature coefficient of the material of the resistor is \(1.6 \times 10^{-4} C^{-1}\) and the resistance is found to be \(160 \Omega\), the temperature of the element is:

Which of the following is a singleton set?

At \(700 \mathrm{~K}\), the Equilibrium constant value for the formation of \(\mathrm{HI}\) from \(\mathrm{H}_2\) and \(\mathrm{I}_2\) is 49.0 .
0.7 mole of \(\mathrm{HI}(\mathrm{g})\) is present at equilibrium. What will be the concentrations of \(\mathrm{H}_2\) and \(\mathrm{I}_2\) gases if we initially started with \(\mathrm{HI}(\mathrm{g})\) and allowed the reaction to reach equilibrium at the same temperature?

Equation of the chord of the circle \(x^{2}+y^{2}+4 x-6 y-9=0\) bisected at \((0,1)\) is