Correct Answer: C. Cliff

Correct Answer: B. 90°

Correct Answer: A. manufacture of ammonia

Correct Answer: C) Lack of good transportation network and insecurity of investments

Explanation

Option A states that the inadequate transportation network and large amount of money needed to start a business are the main factors. This means that the lack of good roads and other means of transportation, as well as the high costs involved in setting up a business, are preventing trade from growing rapidly.

Option B suggests that the lack of motivation and the government's attitude towards trade are the main factors. This means that people are not motivated to engage in trade and the government's policies and actions towards trade are not supportive, which is hindering its growth.

Option C, which is the correct answer, states that the lack of a good transportation network and insecurity of investments are the main factors. This means that the absence of efficient transportation systems and the uncertainty surrounding investments in Nigeria are the main obstacles to the rapid growth of trade.

Option D suggests that the huge capital outlay and the government's attitude towards trade are the main factors. This means that the high initial costs of starting a business and the government's stance on trade are hindering its rapid growth.

In summary, the correct answer is Option C, which states that the lack of a good transportation network and insecurity of investments are the main factors militating against the rapid growth of trade in Nigeria.

Correct Answer: D. farmland

Correct Answer: A. expensive

Correct Answer: B. receiver

Correct Answer: C. 800g

Explanation

Mass = density x volume

400 x 2.5 = 1000g

Loss in mass = volume x density

= \(\frac{400}{2}\) x 1 = 200g

Reading on spring balance = 1000 - 200g = 800g

Correct Answer: D. All of the above

Explanation

Let's analyze each option:

• A. flow from the cathode to the anode: Cathode rays are streams of electrons. Electrons are negatively charged and are repelled by the negatively charged cathode and attracted to the positively charged anode. So, they indeed flow from the cathode to the anode. This is a correct property.

• B. travel in straight lines and cast a shadow of an object placed in their path: Experiments with a Maltese cross placed inside a cathode ray tube clearly show a sharp shadow, demonstrating that cathode rays travel in straight lines. This is a correct property.

• C. are negatively charged: Cathode rays are identified as electrons, which are fundamental particles with a negative charge. Their deflection in electric and magnetic fields confirms their negative charge. This is a correct property.

Since options A, B, and C are all correct properties of cathode rays, the answer is D.

The final answer is D

Correct Answer: A. 45°, 225°