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
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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.
Which noble gas is generally used in illuminating warning signals?

Which of the following statements, with reference to a solution, are correct?
(A) The osmotic pressure of the solution is proportional to the molarity of the solute.
(B) The elevation of the boiling point (\(\Delta T_b\)) is directly proportional to the molal concentration of the solute in a solution.
(C) The unit of \(K_b\) is \(\mathrm{K} \mathrm{kg}^{-1} \mathrm{~mol}^{-1}\).
(D) \(\Delta T_b=T_b^0-T_b\).
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Answer the questions on the basis of passage given below :
As aldehydes ketones possess the carbonyl functional group, they show similar reactions. They exhibit nucleophilic addition reactions, reduction, oxidations, reactions due to alpha-Hydrogen atom, and many other reactions, like Cannizzaro reaction to electrophilic substitution reactions (in case of aromatic aldehydes ketones).
These reactions help in the preparation of a number of important compounds, like acetic acid, vinyl acetate, polymers and in perfume and dye industries. Nucleophilic addition reactions form cyanohydrins, acetals, alcohols and N -substituted derivatives like imine, oxime, semicarbazone, phenylhydrazone Schiff's base. Reactions due to alpha-hydrogen atoms help in formation of aldols and alpha, beta-unsaturated aldehydes ketones.
Which of the following does not give iodoform test?


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The correct expression of the rate of the reaction according to the collision theory is:

What is the product of the following reaction?
\(R-CN \frac{H_2 / Nl}{Na\left(H_{g}\right) / C_2 H_6 OH}\)
The options are:

Which one of the following correctly represents the concentration term 'ppm'?

The slope of the normal to the curve \(y=2 x^2\) at \(x=1\) is:

Which of the following microbe lives in symbiotic association in roots nodules of leguminous plants?

The solubility of a gas in a liquid

Arrange the following alkyl halides in increasing order of reactivity towards \(SN ^2\) reaction?
(A)\(CH _3- Cl\)
(B)\(CH _3- Br\)
(C)\(CH _3- F\)
(D)\(CH _3- I\)
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Two point charges \( q_1 = 36 \text{ }\mu\text{C} \) and \( q_2 = -9 \text{ }\mu\text{C} \) are placed at a distance of 30 cm. The distance from \( q_1 \) where the net electric field is zero, will be :

If the lines \(\frac{x+3}{k-5}=\frac{y-1}{1}=\frac{5-z}{-2 k-1}\) and \(\frac{x+2}{-1}=\frac{2-y}{-k}=\frac{z}{5}\) are perpendicular, then the value of \(k\) is