Male frogs can be distinguished by the presence of sound producing __I__ and also a copulatory pad on the first digit of the __II__.

Match the following lists:

The correct match is

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?

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.

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?

Assertion (A): During pulmonary respiration in frog, buccopharyngeal cavity acts like a force pump.

Reason (R): When the floor of buccopharyigeal cavity is lowered, air forces the glottis to open and reach the lungs.

The correct option among the following is:

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

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

Match the following:

Choose the right option showing the correct match.

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?