Explanation

Glucose (C6H12O6) is a type of carbohydrate, specifically a simple sugar or monosaccharide.

It is a vital source of energy for many living organisms, including humans.

Glucose is a primary component of many carbohydrates, such as starch, cellulose, and glycogen.

Explanation

Blood has a pH level of around 7.3, which is closest to neutral (pH 7).

Explanation

Condensing is the process by which a gas changes state to become a liquid.

This occurs when the temperature and pressure of the gas are reduced to the point where the molecules slow down and come together to form a liquid.

Key Points:

• Melting is the process where a solid becomes a liquid.
• Freezing is the process where a liquid becomes a solid.
• Boiling is the process where a liquid becomes a gas.

Explanation

In solids, heat transfer occurs primarily through conduction, where vibrations and collisions of particles (atoms or molecules) transfer energy from one point to another.

Explanation

• The principal axis is a horizontal line that passes through the centre of the lens, perpendicular to its surface.
• It is the central axis around which the lens is symmetrical.

Explanation

The spring constant (k) represents the force required to stretch or compress a spring by a certain distance.

The unit of spring constant is Newton per meter (N/m) or Newton per meter^-1 (Nm^-1).

Explanation

A convex lens has either one or both of its surfaces curving outwards, that is, wider divergence from the plan at the center.

These lenses are used to correct long-sightedness (hypermetropia).

Explanation

• Dentist mirrors are typically concave mirrors.

• Rear-view mirrors
• Blind Corner mirrors 
• Security mirrors

Explanation

Never connect an ohmmeter on live or energized circuits because ohmmeters require their internal power source (a battery) to measure resistance,

And any external voltage from a live circuit will interfere with the reading, potentially damaging the meter and causing injury.

Always disconnect the power to the circuit and confirm

There is zero potential difference before using an ohmmeter to measure resistance. 

Explanation

Near Earth's surface, the acceleration due to gravity (g) is approximately 10 meters per second squared (10 ms^-2).

This is a fundamental constant that describes the strength of gravity on our planet.