Explanation

The –SH group is present in thiols. 

A thiol is a functional group where a sulfur atom is bonded to a hydrogen atom.

The -SH group is analogous to the -OH group in alcohols, except that sulfur replaces oxygen. 

Explanation

A gas behaves non-ideally at low temperature and high pressure. 

At low temperatures, molecules have less kinetic energy,

Meaning they move more slowly and are more likely to experience intermolecular forces, which causes them to deviate from ideal behavior. High pressure also contributes to non-ideal behavior because the molecules are closer together, leading to increased interactions. 

Explanation

An alkyl group is formed by removing a hydrogen atom from an alkane, and since the hydrogen atom is removed with one bonding electron, the resulting group has an unpaired electron, making it a radical. 

Explanation

Alpha particles consist of 2 protons and 2 neutrons, making them identical to the nucleus of a helium atom (He²⁺).

They carry a +2 charge.

They are emitted during alpha decay in radioactive elements.

Explanation

Qc (reaction quotient) is defined as the ratio of the molar concentrations of products to reactants, each raised to the power of their respective stoichiometric coefficients (coefficients in the balanced chemical equation).

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Explanation

Sodium chloride (NaCl) forms ionic bonds, which are considered the strongest type of bonding in solids.

These bonds involve a strong electrostatic attraction between positively charged sodium ions (Na+) and negatively charged chlorine ions (Cl-).

This results in a stable crystal lattice structure, requiring a significant amount of energy to overcome and melt the compound. 

Explanation

 Tetraethyl lead (TEL) was historically added to gasoline to increase its octane rating and reduce knocking, but due to its environmental concerns, it has largely been phased out. 

Explanation

The molecule that cannot form hydrogen bonding among themselves is All of the above. 

Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (oxygen, nitrogen, or fluorine) in one molecule and is attracted to the lone pair of electrons on another electronegative atom in a different molecule. 

A) CH₂O (Formaldehyde):

While the oxygen is electronegative, the hydrogen is not directly bonded to it, so it cannot participate in hydrogen bonding.

B) CH₃CHO (Acetaldehyde):

Similar to A, the hydrogen is not directly bonded to the oxygen.

C) (CH₃ – CH₂)₃N (Trimethylamine):

Although the nitrogen is electronegative, the hydrogen atoms are not directly bonded to the nitrogen.

Explanation

According to Einstein, increasing the brightness of a beam of light without changing its color will increase the number of photons. 

Einstein's theory of light posits that light consists of discrete particles called photons.

Brightness is related to the number of photons present in a given area over a specific time.

When you increase the brightness of a light beam, you are essentially adding more photons to that beam,

While keeping the energy of each photon the same (which is related to its frequency and color).