Arrange the following complexes in increasing order of their magnetic mome
(A) \(\left[\mathrm{NiCl}_4\right]^{2-}\)
(B) \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\)
(C) \(\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\)
(D) \(\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}\)
Choose the correct answer from the options given below:

Answer the question on basis of passage given below :
Lyophobic sols like those of metals (Au, Ag, etc) are unstable and are easily precipitated by addition of electrolytes. However, it is observed that the addition of certain lyophilic colloids like gums, soaps, gelatine, etc. to lyophobic colloids (like a metal sol) render lyophobic colloids difficult to coagulate by the addition of electrolytes. The process is known as 'protection' and the lyophilic colloids are termed as Protective colloids. It is believed that the protective action of the lyophilic colloids is due to the covering up of the particles of the lyophobic colloid by those of the lyophilic colloid. smaller the gold number of a protective colloid, the greater is its protective action. purification of colloidal solution ?
Evidently, Which of the following methods cannot be used for

Out of the following which will be see-saw shaped?
A. \(\text{XeO}_2\text{F}_2\)
B. \(\text{SF}_4\)
C. \(\text{BrF}_3\)
D. \(\text{XeO}_4\)
Choose the correct answer from the options given below:

In a reaction A and B reacts to form product. The initial rate of reaction was determined using different initial concentration of A and B.

A/molL-1	0.10	0.10	0.20
\(B / mol L ^{-1}\)	0.30	0.10	0.30
\(r_o / mol L ^{-1} s^{-1}\)	\(6.81 \times 10^{-4}\)	\(2.27 \times 10^{-4}\)	\(13.62 \times 10^{-4}\)

What is the initial rate of reaction (\(r_o\)) when critical concentration of A and B is \(0.50\ mol/L\) and \(0.50\ mol/L\) respectively.

Read the passage carefully and answer the Questions
The decomposition of \(N_2O_5\ (g)\) is given as
\(N_2O_5(g) \rightarrow 2NO_2(g) + \frac{1}{2}O_2(g)\)
The above reaction is found to be of first order.
The initial concentration of \(N_2O_5\) was \(1.24 \times 10^{-2}\ M\) at \(318\ K\).
The concentration \(N_2O_5\) after \(60\ minutes\) was \(0.20 \times 10^{-2}\ M\).
The rate constant of the reaction at \(318\ K\) is ______________ (\(log\ 6.2 = 0.792\))

Choose the correct combination(s) :
(A) Nylon 6: Addition Copolymer
(B) Buna-S: Addition homopolymer
(C) Melamine: Condensation Copolymer
(D) Teflon : Addition homopolymer
Choose the correct answer from the options given below :

What amount of bromine will be required to convert \(6 g\) of phenol into 2,4,6-tribromophenol?

The value of \(\int_0^1 \log _e\left(\frac{1}{x}-1\right) d x\) is :

A point source heating device of 1000 W with 10% efficiency is 7m from the observational location. Find the peak value of electric field produced by the radiation at that location.

In a game of 100 points, A can give B 20 points and C 28 points. How many points can B give C?

Gluconic acid is obtained when

In a hydrogen atom the effect on potential energy of the electron with increase in radius of orbits will be :

The side of an equilateral triangle increases at the rate of \(3 cm / sec\), then the rate at which the area of the triangle increases when the side is 4 cm , is :