\(\mathrm{Xe}(\mathrm{g})+2 \mathrm{~F}_2(\mathrm{~g}) \xrightarrow[7 \text { bar }]{873} \mathrm{XeF}_4(\mathrm{~s})\)
The ratio of \(\mathrm{Xe}: \mathrm{F}_2\) required in the above reaction is

Two statements are given below
Statement I: Chlorobenzene on nitration gives 1-chloro4-nitrobenzene as major product
Statement II: Chlorobenzene undergoes nitration slowly than benzene
Identify the correct answer

Identify the correct statements from the following.
i. Melting points and iviling points of group 13 elements are much higher than those of corresponding group 14 elements
ii. SiO only exists at high temperatures
iii. \(\mathrm{PbI}_4\) does not exist
iv. Buckminster fullerene contain twelve 6-membered carbon rings and twenty 5 - membered carbon rings.

209 g of an element reacts with chlorine to form 315.5 g of its chloride. What is the weight (in g ) of oxygen that reacts with 418 g of same element?
\((\mathrm{C} \ell=35.5 \mathrm{u} ; \mathrm{O}=16 \mathrm{u})\)

Arrange the following in decreasing order of their basicity

Given below are two statements
Assertion (A): Ionic compounds are formed by nondirectional bonds
Reasoning (R): They are soluble in nonpolar solvents The correct answer is

Which region of the atmosphere is the
domain of all living organisms

IUPAC name of the following compound is

When an inductor of inductance \(\frac{6}{\pi} \mathrm{H}\), a capacitor of capacitance \(\frac{50}{\pi} \mu \mathrm{F}\) and resistor of resistance \(R\) are connected in series with an AC supply of rms voltage \(220 \mathrm{~V}\) and frequency \(50 \mathrm{~Hz}\), the rms current through the circuit is \(440 \mathrm{~mA}\). Match the inductive reactance, \(X_L\) the capacitive reactance, \(X_C\) the resistance \(R\) and the impedance \(Z\) of the circuit given in List-I with the corresponding values given in List-II.
\(\begin{array}{llll} \hline & \text { List- I } & & \text { List- II } \\ \hline \text {(A) } & X_L & \text { (i) } & 200 \Omega \\ \hline \text {(B) } & X_C & \text { (ii) } & 300 \Omega \\ \hline \text {(C) } & R & \text { (iii) } & 500 \Omega \\ \hline \text {(D) } & Z & \text { (iv) } & 600 \Omega \\ \hline \end{array}\)

If the plane \(7 x+11 y+13 z=3003\) meets the co-ordinate axes in \(A, B, C\), then the centroid of the \(\triangle A B C\) is

If \(\sqrt{5} y-\sqrt{8}=0\) is the equation of the directrix of a hyperbola \(\frac{x^2}{a^2}-\frac{y^2}{b^2}+1=0\) and \(\frac{\sqrt{5}}{2}\) is its eccentricity then \(\frac1a=\)

A one-rupee coin, a two rupee coin, a five rupee coin and a ten rupee coin are tossed simultaneously. Then, the expected value of the sum of the values of coins that show heads up is