Which among the following has highest boiling point?

A medium having dielectric constant $K>1$ fills the space between the plates of a parallel plate capacitor. The plates have large area, and the distance between them is $d$. The capacitor is connected to a battery of voltage $V$. as shown in Figure (a). Now, both the plates are moved by a distance of $\frac{d}{2}$ from their original positions, as shown in Figure (b).

In the process of going from the configuration depicted in Figure (a) to that in Figure (b), which of the following statement(s) is(are) correct?

A slide with a frictionless curved surface, which becomes horizontal at its lower end, is fixed on the terrace of a building of height $3h$ from the ground, as shown in the figure. A spherical ball of mass $m$ is released on the slide from rest at a height $h$ from the top of the terrace. The ball leaves the slide with a velocity ${\overrightarrow{u}}_0=u_0\stackrel{\wedge }{x}$ and falls on the ground at a distance $d$ from the building making an angle $\theta$ with the horizontal. It bounces off with a velocity $\overrightarrow{v}$ and reaches a maximum height $h_1$. The acceleration due to gravity is $g$ and the coefficient of restitution of the ground is $\frac{1}{\sqrt{3}}$. Which of the following statement(s) is(are) correct?

Match the following lists:

The correct match is

Considering the following reaction sequence,

the correct option(s) is(are)

${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2-\mathrm{MgBr}\frac{\left(1\right){\mathrm{CO}}_2 /\mathrm{ether} }{\left(2\right){\mathrm{H}}_3{\mathrm{O}}^{+}}{}^{\text{'}}\mathrm{X}^{\text{'}}\frac{\mathrm{NaOH}+\mathrm{CaO}}{\mathrm{\Delta }}{ }^{\text{'}}{\mathrm{Y}}^{\text{'}}$

What is the final product in this reaction?

Fill in the blank with the most appropriate option given below.

We should give everyone training in citizenship, but we have______this aspect till now.

How would you account for:

Boiling points of aldehydes are lower than alcohols.

Assertion ($\mathrm{A}$): A primary succession is more common than secondary succession.

Reason ($\mathrm{R}$): Biogeochemical cycling is absent in secondary succession.

Arrange the following compounds in increasing order of their boiling points: ${\mathrm{CH}}_3-\mathrm{CHO}, {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}, {\mathrm{CH}}_3-\mathrm{O}-{\mathrm{CH}}_3, {\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_3$

Given below are two statements:
Statement $\mathrm{I}$: The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole - dipole interactions.
Statement $\mathrm{II}$: The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of $\mathrm{H}$-bonding.

In the light of the above statements, choose the most appropriate answer from the options given below :