If we plot graph for first order reaction involving reactant \(R\), then it will be a straight line if plotted for :

The purest form of commercial iron is

Magnetic moment of \(\text{Co}^{2+}\) will be

Reaction of Chloroethane with ethanolic ammonia will result in :

Which of the following will produce turbidity most readily when treated with conc. HCl in presence of anhydrous \(ZnCl _2\) (Lucas reagent)?

Which of the following reactions has fractional order with respect to one of the reactants?

Answer the question on basis of passage given below
The noble gases have closed shell electronic configuration and are monatomic gases under normal conditions. The low boiling points of lighter noble gases are due to the weak dispersion forces between the atoms and the absence of other inter atomic interaction. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers \(+2, +4\) and \(+6\).
\(\text{XeF}_4\) reacts violently with water to give \(\text{XeO}_3\). The compound of Xenon exhibit stereoisomerism and their geometries can be deduced considering the total number of electrons in the valence shell.
Match List - I with List – II.

List - I	List - II
A. Its partial hydrolysis does not change the oxidation state of the central atom	I. He
B. It is used in modern diving apparatus	II. \(\text{XeF}_6\)
C. It is used to provide inert atmosphere for filling electrical bulbs	III. \(\text{XeF}_4\)
D. Its central atom is in \(\text{sp}^3\text{d}^2\) hybridisation state	IV. Ar

Choose the correct answer from the options given below :

Two point charges, \( q_1 = 4\mu C \) and \( q_2 = -3\mu C \) (with no external field) are placed at (\(-6 \, cm, 0, 0\)) and (\(6 \, cm, 0, 0\)), respectively. The amount of work required to separate the two charges infinitely away from each other will be

The number of solutions of the system of equations
\(\begin{array}{l}\alpha^2 x+\alpha y=-1 \\\alpha x+\alpha^2 y=1\end{array}\)
is infinite. Then \(\alpha\) is:

The corner points of the feasible region determined by the following system of linear inequalities :
\(2 x+y \leq 10, \quad x+3 y \leq 15, \quad x, y \geq 0\) are \((0,0),(5,0),(3,4)\) and \((0,5)\).
Let \(z=p x+q y\), where \(p, q>0\).
Condition on \(p\) and \(q\) so that maximum of \(z\) occurs at both \((3,4)\) and \((0,5)\) is :

If \(A, B\) are symmetric matrices of the same order, then \(A B-B A\) is a :

A letter is known to have come from either TATAPUR or from CHAKRATA. On the envelope, only two letters "TA" are visible consecutively. The probability that the letter has come from CHAKRATA is :

For the given five values \(15,24,18,33,42\), the three years moving averages are :