Correct Answer: B. gas thermometer

Correct Answer: D. electoral commission

Correct Answer: A. Activation energy

Correct Answer: C. plutonic rocks

Explanation

Plutonic igneous rocks (also known as intrusive igneous rocks) are rocks formed when the motten magma cools and solidifies slowly before it gets to the surface of the earth to form large crystals.

Explanation

(a) Angular difference = 33° + 23° = 56°

Distance PQ along parallel of latitude = \(\frac{56}{360} \times 2 \pi r\)

where r = R cos 55°

\(\therefore |PQ| = \frac{56}{360} \times 2 \times \frac{22}{7} \times 6400 \cos 55\)

= \(3589.46 km \approxeq 3589 km\) (to the nearest degree)

(b) \(|PO|^{2} = r^{2} + r^{2} - 2r^{2} \cos 56° = R^{2} + R^{2} - 2R^{2} \cos \theta \)

= \(2r^{2} - 2r^{2} \cos 56° = 2R^{2} - 2R^{2} \cos \theta\)

But \(r = R cos 55° = 6400 \times 0.5736 = 3671\)

\(\therefore 2r^{2} (1 - \cos 56°) = 2R^{2} (1 - \cos \theta)\)

\(2 \times 3671^{2} ( 1 - 0.5592) = 2 \times 6400^{2} (1 - \cos \theta)\)

\(1 - \cos \theta = \frac{2 \times 3671^{2} \times 0.4408}{2 \times 6400^{2}}\)

\(1 - \cos \theta = 0.1259\)

\(\cos \theta = 1 - 0.1259 = 0.8741\)

\(\theta = \cos^{-1} (0.8741) = 29.06°\)

\(\therefore\) Distance PQ along great circle = \(\frac{29.06}{360} \times 2 \times \frac{22}{7} \times 6400\)

= \(3247.34 km \approxeq 3247km\)

Correct Answer: C. Traditional rulers

Explanation

The indirect rule system, introduced by the British, greatly affected the traditional rulers in Nigeria. This system used the existing traditional rulers and institutions to govern, thereby increasing their power and influence.

Correct Answer: B. acceptance through grace

Correct Answer: B. Sudan

Correct Answer: A. #165,000

Correct Answer: D) water molecules form a dilute solution to a concentrated solution through a semi permeable membrane

Explanation

This Biology question is about osmosis, which is the movement of water molecules across a semi-permeable membrane. Osmosis occurs when water moves from an area of high concentration to an area of low concentration. The question is asking which option correctly describes the diffusion of water molecules during osmosis. Option A states that water molecules move from an area of high concentration to an area of low concentration, but this is the definition of simple diffusion, not osmosis. Option B correctly describes osmosis. Water molecules move from a dilute solution to a concentrated solution across a semi-permeable membrane. Option C describes the opposite of osmosis. Water molecules move from a concentrated solution to a dilute solution through a semi-permeable membrane. Option D correctly describes osmosis. Water molecules move from a dilute solution to a concentrated solution through a semi-permeable membrane. Therefore, the correct answer to this question is Option D.