The liquid which causes formation of poisonous gas when exposed to sunlight in presence of air or oxygen (\(\text{O}_2\)), is:

Choose the correct sequence of reagents to carry out the following conversion:

(A) Conc. \(\mathrm{HNO}_3 /\) Conc. \(\mathrm{H}_2 \mathrm{SO}_4\)
(B) \(\mathrm{Sn} / \mathrm{HCl}\)
(C) \(\mathrm{Br}_2 / \mathrm{FeBr}_3\)
(D) \(\mathrm{NaNO}_2 / \mathrm{HCl}\); followed by boiling with water
Choose the correct answer from the options given below:

A compound forms hexagonal closed packed structure. What is the number of tetrahedral voids in \(0.8\text{ mol}\) of it?

Which of the following is an essential amino acid?

Interstitial compounds are formed when small atoms like H, C, or N are trapped in the crystal lattice of metal. Which of the following statements are true about the interstitial compounds?
(A) Interstitial compounds have higher melting points than the pure metals.
(B) Interstitial compounds are very soft.
(C) Interstitial compounds are very reactive.
(D) Interstitial compounds retain metallic conductivity.
Choose the correct answer from the options given below:

Match List-I With List-II

LISt – I (Material)	LIST – II (Values)
(A) Gold	(I) \(4.5 \times 10^3\)
(B) Glass	(II) \(3.5 \times 10^{-5}\)
(C) Silicon	(III) \(1.0 \times 10^{-16}\)
(D) Pure water	(IV) \(1.5 \times 10^{-2}\)

Choose the correct answer from the options below:

Aldehydes and ketones can be prepared by:
(A) Oxidation of Alcohol
(B) Dehydrogenation of Alcohol
(C) Ozonolysis of alkenes
(D) Hydration of Alkyne
Choose the correct answer from the options given below:

If \(\int_0^a 3 x^2 d x=27\), then value of \(a\) is :

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.
\(X e F _4 \quad\) and \(X e F _6 \quad\) are expected to be :

The matrix A \(=\left[\begin{array}{ccc}2 & 0 & 0 \\ 0 & -3 & 0 \\ 0 & 0 & 5\end{array}\right]\) is :

The vector equation of the line joining the points \((-2,-3,-4)\) and \((1,-2,4)\) is :

Fuel cell involves __________.

The relation \(R\) in the set \(A=\{1,2,3\}\) given by \(R=\{(1,2),(2,1)\}\) is :