Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with \(HBF_4\). Which of the following conditions is correct about this reaction?

Evaluate the following statements related to group \(14\) elements for their correctness. \((A)\)Covalent radius decreases down the group from \(\mathrm{C}\) to \(\mathrm{Pb}\) in a regular manner. \((B)\) Electronegativity decreases from \(\mathrm{C}\) to \(\mathrm{Pb}\) down the group gradually. \((C)\) Maximum covalence of \(\mathrm{C}\) is \(4\) whereas other elements can expand their covalence due to presence of \(d\) orbitals. \((D)\) Heavier elements do not form \(\mathrm{p} \pi-p \pi\) bonds. \((E)\) Carbon can exhibit negative oxidation states. Choose the correct answer from the options given below:

Which of the following statement is not true for glucose?

Arrange the following in increasing order of solubility product :
\(\mathrm{Ca}(\mathrm{OH})_2, \mathrm{AgBr}, \mathrm{PbS}, \mathrm{HgS}\)

The compounds which give positive Fehling's test are :
(A)

(B)

(C) \(\mathrm{HOCH}_2-\mathrm{CO}-(\mathrm{CHOH})_3-\mathrm{CH}_2-\mathrm{OH}\)
(D)

(E)

Choose the correct answer from the options given below :

Which one of the following properties is not shown by \(NO\)?

If \(IUPAC \) name of an element is \("unununium"\) then correct statement regarding element is

Among \(\mathrm{VO}_2^{+}, \mathrm{MnO}_4^{-}\)and \(\mathrm{Cr}_2 \mathrm{O}_7^{2-}\), the spin-only magnetic moment value of the species with least oxidising ability is _______\(BM\) (Nearest integer). (Given atomic member \(\mathrm{V}=23, \mathrm{Mn}=25, \mathrm{Cr}=24\) )

The term independent of \(x\) in expansion of \({\left( {\frac{{x + 1}}{{{x^{2/3}} - {x^{\frac{1}{3}}} + 1\;}}--\frac{{x - 1}}{{x - {x^{1/2}}}}} \right)^{10}}\) is

Let \(\vec a = 2\hat i + \hat j - 2\hat k,\vec b = \hat i + \hat j\). If \(\vec c\) is a vector such that \(\vec a.\vec c = \left| {\vec c} \right|,\left| {\vec c - \vec a} \right| = 2\sqrt 2 \) and the angle between \(\vec a \times \vec b\) and \(\vec c\) is \(30^o\), then \(\left| {\left( {\vec a \times \vec b} \right) \times \vec c} \right|\) equals 

\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\) and \(\left[\mathrm{CoF}_6\right]^{3-}\) are respectively known as _______.

The \(INCORRECT\) statement is

The imaginary part of \((3+2 \sqrt{-54})^{1 / 2}-(3-2 \sqrt{-54})^{1 / 2}\) can be