Which of the following statement is incorrect?

\(9.65 \mathrm{C}\) of electric current is passed through fused alhydrous \(\mathrm{MgCl}_{2}\). The magnesium metal thus obtained is completely converted into a Grignard reagent. The number of moles of Grignard reagent obtained is

The maximum number of hydrogen bonds that a molecule of water can have is

Which one of the following is a polyamide polymer?

For the reaction, \( 2 \mathrm{SO}_{2}+\mathrm{O}_{2} \rightleftharpoons 2 \mathrm{SO}_{3} \), the rate of disappearance of \( \mathrm{O}_{2} \) is
\( 2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} \). The rate of apperance of \( \mathrm{SO}_{3} \) is

\(\mathrm{XeF}_{6}\) on partial hydrolysis gives a compound \(X\), which has square pyramidal geometry ' \(X\) ' is

Relative lowering of vapour pressure of a dilute solution of glucose dissolved in \( 1 \mathrm{~kg} \) of water is
\( 0.002 \). The molality of the solution is

An electron is

Red light of wavelength \(625 \mathrm{~nm}\) is incident normally on an optical diffraction grating with \(2 \times 10^{5}\) lines \(/ \mathrm{m}\). Including central principal maxima, how many maxima may be observed on a screen which is far from the grating?

In the diagram, \(I_{1}, I_{2}\) are the strength of the currents in the loop and straight conductors respectively. \(O A=A B=R\). The net magnetic field at the centre \(O\) is zero. Then the ratio of the currents in the loop and the straight conductos is

If \(\overrightarrow{\mathbf{a}}+2 \overrightarrow{\mathbf{b}}+3 \overrightarrow{\mathbf{c}}=\overrightarrow{\mathbf{0}}\), then \(\overrightarrow{\mathbf{a}} \times \overrightarrow{\mathbf{b}}+\overrightarrow{\mathbf{b}} \times \overrightarrow{\mathbf{c}}+\overrightarrow{\mathbf{c}} \times \overrightarrow{\mathbf{a}}\) is equal to

Which one of the following is not true?

Match List-I with List-II for the following reaction pattern
Glucose \(\xrightarrow{\text { Reagent }}\) Product \(\longrightarrow\) Structural prediction
\begin{array}{|l|l|l|l|}\hline & \text{List - I (Reagents)} & & \text{List-II (Structural prediction)} \\\hline \text{a}. & \text{Acetic anhydride} & \text{(i)} & \text{Glucose has an aldehyde group} \\\hline \text{b.} & \text{Bromine water} & \text{(ii)} & \text{Glucose has a straight chain of six carbon atoms} \\\hline \text{c.} & \text{Hydroiodic acid} & \text{(iii)} & \text{Glucose has five hydroxyl group} \\\hline \text{d.} & \text{Hydrogen cyanide} & \text{(iv)} & \text{Glucose has a carbonyl group} \\\hline\end{array}

Choose the correct answer from the options given below.