The basic character of transition metal monoxides follows the order:

Abnormal colligative properties are observed only when the dissolved non-volatile solute in a given dilute solution

A dry cell consists of a moist paste of \(\mathrm{NH}_4 \mathrm{Cl}\) and \(\mathrm{ZnCl}_2\) contained in a \(\mathrm{Zn}\) casing which encloses a Carbon rod surrounded by black \(\mathrm{MnO}_2\) paste. What is the role of \(\mathrm{ZnCl}_2\) in it?

Two statements, One Assertion (A) and the other Reason (R) are given. Choose the right option.
Assertion: The rate constant \((\mathrm{k})\) for a chemical reaction gets nearly doubled for a \(10^{\circ}\) rise in temperature.
Reason: The number of bimolecular collisions between reactant molecules increase with increase in temperature

The pH at which an acid indicator with \(K_\alpha=1 \times 10^{-5}\) changes colour when the indicator concentration is \(1 \times 10^{-3} \mathrm{M}\) is

The volume of \(10 \mathrm{~N}\) and \(4 \mathrm{~N}\) HCl required to make 1 litre of \(7 \mathrm{~N} \mathrm{HCl}\) are

Which one of the following Coordination entities exhibits Facial and Meridional isomerism?

In a game, a man wins ₹ 1000 if he gets an even number greater than or equal to 4 on a fair dice and loses ₹ 200 for getting any other number on the dice. If he decides to throw the dice until he wins or maximum of three times, then his expected gain/loss in (₹) is --

Given, two vectors \(\hat{\hat{i}}-\hat{\mathfrak{j}}\) and \(\hat{\hat{i}}-2 \hat{\mathfrak{j}}\). The unit vector, coplanar with the two given vectors and perpendicular to \((\hat{\hat{\mathbf{i}}}-\hat{\hat{\mathfrak{j}}})\) is

If a set \(A\) has 4 elements, then the total number of proper subsets of set \(A\), is

Sodium metal crystallises in a body centred cubic lattice with a unit cell edge of \(4.29 Å\). The radius of sodium atom is

Select the correct statement from the following: The position of the centre of mass of a system:

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