For the following Assertion and Reason, the correct option is Assertion : The \(pH\) of water increases with increase in temperature. Reason : The dissociation of water into \(H^+\) and \(OH^-\) is an exothermic reaction.

Out of the following, which type of interaction is responsible for the stabilisation of \(\alpha-\) helix structure of proteins ?

Which of the following conversions involves change in both shape and hybridisation?

Consider separate solutions of \(0.500\, M\, C_2H_5OH\,(aq),\) \(0.100\,M\,Mg_3(PO_4)_2\, (aq), \) \(0.250\, M\,KBr\,(aq)\) and \(0.125\, M\,Na_3PO_4\,(aq)\) at \(25^o C.\) Which statement is true about these solutions, assuming all salts to be strong electrolytes ?

Given below are two statements :
1 M aqueous solution of each of \(\mathrm{Cu}\left(\mathrm{NO}_3\right)_2, \mathrm{AgNO}_3\), \(\mathrm{Hg}_2\left(\mathrm{NO}_3\right)_2 ; \mathrm{Mg}\left(\mathrm{NO}_3\right)_2\) are electrolysed using inert electrodes,
\(\begin{aligned} & \text { Given : } \mathrm{E}_{\mathrm{Ag}^{+} / \mathrm{Ag}}^\theta=0.80 \mathrm{~V}, \mathrm{E}_{\mathrm{Hg}_2^{2+} / \mathrm{Hg}}^\theta=0.79 \mathrm{~V}, \\ & \mathrm{E}_{\mathrm{Cu}^{2+} / \mathrm{Cu}}^\theta=0.24 \mathrm{~V} \text { and } \mathrm{E}_{\mathrm{Mg}^{2+} / \mathrm{Mg}}^\theta=-2.37 \mathrm{~V}\end{aligned}\)
Statement (I) : With increasing voltage, the sequence of deposition of metals on the cathode will be \(\mathrm{Ag}, \mathrm{Hg}\) and Cu
Statement (II) : Magnesium will not be deposited at cathode instead oxygen gas will be evolved at the cathode.
In the light of the above statement, choose the most appropriate answer from the options given below

The number of lone pairs of electrons on the central \(I\) atom in \(I_{3}^{-}\) is \(.......\)

The number of chiral carbons present in sucrose is

In a hydrogen like atom, when an electron jumps from the \(M -\) shell to the \(L-\) shell the wavelength of emitted radiation is \(\lambda \). If an electron jumps from \(N-\) shell to the \(L-\) shell the wavelength of emitted radiation will be

If the mirror image of the point \(\mathrm{P}(3,4,9)\) in the line \(\frac{x-1}{3}=\frac{y+1}{2}=\frac{z-2}{1}\) is \((\alpha, \beta, \gamma)\), then \(14(\alpha+\beta+\gamma)\) is :

A hot body, obeying Newton's law of cooling is cooling down from its peak value \(80\,^oC\) to an ambient temperature of \(30\,^oC\) . It takes \(5\, minutes\) in cooling down from \(80\,^oC\) to \(40\,^oC\).  ........  \(\min.\) will it take to cool down from \(62\,^oC\) to \(32\,^oC\) ? (Given \(ln\, 2\, = 0.693, ln\, 5\, = 1.609\))

A positive charge \('q'\) of mass \('m'\) is moving along the \(+ x\) axis. We wish to apply a uniform magnetic field \(B\) for time \(\Delta t\) so that the charge reverses its direction crossing the \(y\) axis at a distance \(d.\) Then

Total enthalpy change for freezing of 1 mol of water at \(10^{\circ} \mathrm{C}\) to ice at \(-10^{\circ} \mathrm{C}\) is _______.
(Given : \(\Delta_{\text {fus }} H=x \mathrm{~kJ} / \mathrm{mol}\))
\(\begin{aligned} & \mathrm{C}_{\mathrm{p}}\left[\mathrm{H}_2 \mathrm{O}(\mathrm{l})\right]=\mathrm{y} \mathrm{J} \mathrm{mol}^{-1} \mathrm{~K}^{-1} \\ & \mathrm{C}_{\mathrm{p}}\left[\mathrm{H}_2 \mathrm{O}(\mathrm{s})\right]=\mathrm{z} \mathrm{J} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\end{aligned}\)

To measure the temperature coefficient of resistivity \(\alpha\) of a semiconductor, an electrical arrangement shown in the figure is prepared. The arm BC is made up of the semiconductor. The experiment is being conducted at \(25^{\circ} \mathrm{C}\) and resistance of the semiconductor arm is \(3 \mathrm{~m} \Omega\). Arm BC is cooled at a constant rate of \(2^{\circ} \mathrm{C} / \mathrm{s}\). If the galvanometer \(\mathrm{G}\) shows no deflection after \(10 \mathrm{~s}\), then \(\alpha\) is _______.