Explanation

In a liquid, the particles are arranged in an irregular and less closely packed manner, with some freedom of movement.

Explanation

• Gases are the state of matter that takes both the shape and volume of a container they are placed in. They expand to fill the container and conform to its shape.
• Liquids, take the shape of a container but maintain their own volume.
• Solids maintain both their shape and volume, regardless of the container they are placed in.

Explanation

• The existence of impurities in water decreases its freezing point, a phenomenon known as freezing point depression.
• This is because the impurities disrupt the formation of ice crystals, making it more difficult for water to freeze.
• As a result, the freezing point of water is lowered.

Explanation

• Nylon is a synthetic polymer that belongs to the class of polyamides.
• It is made up of repeating units of amide groups (-CONH-) linked together by peptide bonds.
• Nylon is a thermoplastic material that is strong, flexible, and resistant to abrasion and chemicals.

Explanation

Oxidation of a secondary alcohol results in the formation of a ketone.

Explanation

Explanation

 The answer is All of the above.

The oxidation number of an element can be zero, negative, or positive, depending on the element and its bonding environment. 

Explanation

NO₂ (Nitrogen dioxide) is a covalent compound, made of nonmetals (nitrogen and oxygen) sharing electrons.

The others like (NH₄)₂CO₃, HNO₃, and AgCl involve ionic bonding either fully or in part (e.g., NH₄⁺ acts ionically).

Explanation

When an aldehyde is oxidized, it typically converts to a carboxylic acid.

This reaction involves the addition of an oxygen atom to the aldehyde, changing the carbonyl group (C=O) at the end of the carbon chain into a carboxyl group (–COOH).

Explanation

• Heat is measured in Joules (J), which is the unit of energy.
• Heat is a form of energy transferred from one body to another due to a temperature difference.