The magnetic moment in transition metals is calculated using the formula:

Excess of Lead from human body can be removed by using which of the following chelating agents?

The correct IUPAC name for \(C H _{ 2 }= C H C H _{ 2 } N H C H _{ 3 }\).

Molecules are the constituent particles of molecular solids. Identify the molecular solid amongst the following:

Which of the following compound is most reactive towards nucleophilic addition reaction?

Enzymes are biological catalysts. They accelerate biological reactions. Which of the following is not true about enzymes?

How much calcium will be obtained when 4 Faradays of electricity is passed through molten CaCl2?

The simple random sample consists of six observations: \(5, 8, 10, 7, 10, 14\). The point estimate of the population mean is:

Match List-l with List-II:

List-I (Placental mammals)	List-II (Counterpart Marsupials)
(A) Anteater	(I) Spotted cuscus
(B) Bobcat	(II) Numbat
(C) Lemur	(III) Flying Phalanger
(D) Flying squirrel	(IV) Tasmanian tiger cat

Choose the correct answer from the options given below:

If \(A=\left[\begin{array}{ll}3 & -2 \\ 4 & -2\end{array}\right], \quad I=\left[\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right]\) and \(A^2=K A-2 I\), then the value of \(K\) is

A' can run 1 km in 5 minutes 20 seconds and 'B' can run the same distance in 6 minutes. How many meters start can 'A' give 'B' in a kilometer race so that they finish the race together?

The correct expression and unit of molar conductivity (\(\Lambda_{m}\)) are:

Read the passage carefully and answer the questions
Nearly all the transition elements display typical metallic properties such as high tensile strength, ductility, malleability, high thermal and electrical conductivity and metallic lustre. The transition metals (with the exception of Zn, Cd and Hg) are very hard and have low volatility. Their melting and boiling points are high. They have high enthalpies of atomization. lons of the same charge in a given series show progressive decrease in radius with increasing atomic number. However, the variation within a series is quite small. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction which essentially compensates for the expected increase in atomic size with increasing atomic number. The net result of the lanthanoid contraction is that the second and the third d series exhibit similar radii (e.g., Zr 160 pm, Hf 159 pm) and have very similar physical and chemical properties. There is an increase in ionisation enthalpy along each series of the transition elements from left to right. The first ionisation enthalpy, in general, increases, but the magnitude of the increase in the second and third ionisation enthalpies for the successive elements, is much higher along a series. One of the notable features of a transition elements is the great variety of oxidation states these may show in their compounds.
Among \(\mathrm{Cr}(\mathrm{Z}=24), \mathrm{Co}(\mathrm{Z}=27), \mathrm{Mn}(\mathrm{Z}=25)\) and \(\mathrm{Fe}(\mathrm{Z}=26)\); which will show the maximum variety of oxidation states?