Explanation

The concentration of a solution is calculated by dividing the amount of solute by the volume of solvent.

In this case, 30 grams of sugar in 0.1 litre of water gives the highest concentration.

Explanation

The root stock is the bottom portion of the plant that is used for grafting.

It provides the root system and supports the scion.

The scion is the top portion of another plant that is grafted onto the root stock to grow and produce the desired fruit or flowers.

Explanation

Ribosomes are the organelles responsible for protein synthesis.

They are often referred to as the "factories of food" because they assemble amino acids into proteins.

They can be found either floating freely in the cytoplasm or attached to the endoplasmic reticulum.

Explanation

Hydrochloric acid (HCl): is a strong inorganic acid, also known as a mineral acid.

Citric acid, acetic acid, and lactic acid are organic acids found in citrus fruits, vinegar, and muscle tissue, respectively.

Explanation

Hepatitis A and E are typically acute, short-term infections that resolve on their own without causing chronic liver disease.

Hepatitis B and C, on the other hand, can lead to chronic infections.

Explanation

Carbohydrates, specifically starch, are used as a primary fuel source in the human body alongside fats.

They are broken down into glucose, which provides energy for bodily functions and activities.

Explanation

Mucus is part of the first line of defense (physical barrier).

The second line includes fever, WBCs, and chemical responses after pathogens enter the body.

Explanation

Silver reacts with hydrogen sulphide (H₂S) in the air to form black silver sulphide (Ag₂S) coating.

This process is called tarnishing.

Explanation

Rock candy forms when a supersaturated sugar solution cools and sugar crystals gradually crystallize out.

It shows crystallization from a supersaturated solution, not just a simple saturated one.

Explanation

A star with an initial mass between 1 to 5 times the solar mass expands into a red giant and then collapses into a white dwarf.

A white dwarf is a dense, Earth-sized remnant of a star that has exhausted its nuclear fuel.