Correct Answer: B. Water in the ocean

Explanation

Free goods are goods whether consumer goods or productive inputs, which are useful but not scarce i.e. they are in sufficiently abundant supply that all agents can have as much of them as they wish at zero social opportunity cost e.g. air, water, by -product etc.

Correct Answer: D. grants from the central authority

Explanation

Local government revenue comes from property, sales, and other taxes; charges and fees; and transfers from federal and state governments. Taxes accounted for roughly 40 percent of local general revenue

Correct Answer: C. 35°

Explanation

(a)(i) Characteristic properties of electrovalent compounds.

- They do not contain molecules

- They dissolve in water to form electrolyte

- They have high melting or boiling point

- They are mostly inorganic compounds

(ii) Alpha particles: They are positively charged

- They have low penetrating power

- They exert a very powerful ionizing effect upon any gas through which they pass.

(iii) Catalysts : Catalysts remain unchanged in chemical nature and in mass at the end of a reaction.

- Catalysts alter the rate of a chemical reaction

- They are specific in action

- Catalysts cannot initiate or start a reaction

- They have no effect on the equilibrium of a reversible reaction.

(b)(i) \(_{14}\)Si - 1S\(^2\)2S\(^2\) 2P\(^6\)3S\(^2\)3P\(^2\). Silicon belongs to group four in the periodic table.

(ii) Bond between silicon and oxygen is covalent.

(iii) 1 mole of silicon has a mass of 28 and 6.02 x 10\(^{23}\) atom, in 5.72 x 10\(^{-3}\) g.

= \(\frac{5.72 \times 10^{-3}}{28}\) x 6.02 x 10\(^{23}\)

= 1.2298 x 10\(^{20}\).

(c)(i) X is a good reducing agent because it will react with water to liberate hydrogen.

(ii) X is best stored under oil.

(iii) X will react with cold water to liberate hydrogen gas. It is a violent reaction.

(iv) X\(_2\)O + 2HCI \(\to\) 2XCI + H\(_2\)O.

(v) The likely colour of the salt of X is white.

Correct Answer: C) mercy

Explanation

The question is asking what the rainbow as a sign of God's covenant with Noah implies. In the Bible, after the flood, God made a covenant with Noah that he would never again destroy the earth with a flood. As a sign of this covenant, God set the rainbow in the sky. The question is asking what this rainbow signifies.

The correct option is Option C, which is mercy. The rainbow is a symbol of mercy. It represents God's mercy towards humanity. In the Bible, God could have destroyed the earth completely because of the wickedness of humanity, but He chose to show mercy and spare Noah and his family. The rainbow is a reminder of God's mercy and His promise to never destroy the earth with a flood again.

It is important to note that while the rainbow is a symbol of God's mercy, it does not mean that God condones sin. In fact, the Bible teaches that sin has consequences, and that God will judge sin. However, the rainbow is a symbol of God's promise to show mercy to those who repent and turn to Him.

To summarize, the rainbow as a sign of God's covenant with Noah implies mercy. It is a symbol of God's mercy towards humanity and His promise to never destroy the earth with a flood again.

Correct Answer: C. cassava

Correct Answer: A. My friend is financially sound

Correct Answer: D. complicated

Correct Answer: D. proposal

Correct Answer: B) DNA

Explanation

The question is asking about what controls the reproduction of cells. The options are RNA, DNA, mRNA, and Mitosis. The correct answer is B, DNA. DNA is found in the nucleus of cells and it contains the genetic information that controls the characteristics of an organism. When a cell reproduces, it must first replicate its DNA so that the new cell will have the same genetic information as the original cell. This process is called DNA replication. Mitosis is the process of cell division, which is controlled by the DNA. mRNA is a type of RNA that carries genetic information from the DNA to the ribosomes, where it is used to make proteins. So, while mRNA is involved in the process of protein synthesis, it does not control the reproduction of cells. Therefore, the correct answer is B, DNA.