Explanation

A farad (F) is the standard unit of capacitance (C) in the International System of Units (SI).

***

The SI unit of energy/work is the joule (J)

Explanation

The phrase "takes after" means to resemble or inherit traits from someone, typically a parent.

In this context, it implies that he shares characteristics or features with his father.

Explanation

The given compound is an ionic compound

It is made up of:

• one potassium
• one manganese,
• four oxygen atoms.

Oxidation numbers of potassium (K) and oxygen (O) are +1 and -2 respectively.

Let us assume that the oxidation number of Mn is $x$.

Since ionic compounds are neutral, the net charge on them is zero.

(Oxidation number of K) + (Oxidation number of Mn) + (4 $\times$ The oxidation number of O) = $0$

(1)$\times$(K) + (1)$\times$(Mn) + 4$\times$(O) = $0$

$(1)$$\times$(+1) + (1)$\times$($x$) + 4$\times$(-2) = $0$

$x$ = +7

Hence, the oxidation number of $\text{Mn}$ in ${\text{KMnO}}_4$ is +7.

Explanation

Prokaryotic cells lack membrane-bound organelles.

They do not have structures like a nucleus, mitochondria, or endoplasmic reticulum.

They are characteristic of eukaryotic cells.

Explanation

Real gases show deviation from ideal behavior at low temperature and high pressure.

Due to increased intermolecular forces and reduced volume available for gas molecules, which contradicts the assumptions of ideal gas behavior.

Explanation

• If a reaction rate does not change with concentration, then it is Zero order.
• In zero-order reactions, the rate is constant and independent of the concentration of the reactants.
• It means that changes in concentration do not affect the reaction rate.

Explanation

I have never known him for a long time.

میں اسے ایک عرصے سے کبھی نہیں جانتا تھا۔

"Have never known" is the correct present perfect tense.

It indicating that up until now, the speaker has never known the person.

Explanation

Frictional force is a non-conservative force.

Unlike conservative forces (such as elastic spring force, gravitational force, and electric force), friction dissipates energy as heat and does not store it.

It means the work done by friction depends on the path taken.

Explanation

Thick filaments in skeletal muscles are composed of myosin.

Myosin interacts with actin in thin filaments to facilitate muscle contraction through cross-bridge cycling.

Explanation

According to Newton's First Law of Motion, the mass of an object measures its inertia.

It is the resistance of an object to changes in its state of motion.