Correct Answer: B. Juicy

Correct Answer: A. Ferdinand Magelion

Explanation

a) Gay Lussac's law states that when gases react, they do so in volumes which simple ratios to one another and to the volumes of the products, if gaseous, provided that the temperature and pressure remain constant.

(b) (i) 2CO\(_{(g)}\) + O\(_{2(g)}\) \(\to\) 2CO\(_{2(g)}\)

(ii) I. from the equation: 2 volumes of CO\(_{(g)}\) and 1 volume of O\(_{2(g)}\) —> 2 volumes of CO\(_2\). ratio of reacting volumes

40cm\(^3\) + 20cm\(^3\) —> 40cm\(^3\)

40cm\(^3\) of CO requires 20cm\(^3\) of oxygen to form 40cm\(^3\) of CO\(_2\).

40cm\(^3\) of CO\(^2\) is produced

II. excess reactant is oxygen Volume is 30cm\(^3\)— 20cm\(^3\) = 10cm\(^3\).

III. total volume of gaseous mixture 10cm\(^3\) of O\(^2\) + 40cm\(^3\) CO\(_2\) = 50cm\(^3\).

(c) (i) SiO\(_2\). (ii) CaO (iii) ZnO (iv) CO (v) CO and NO\(_2\).

(d) (i) Conc. HNO\(_3\). slowly decomposes releasing brown NO, which dissolves in the acid to give the yellow colour.

(ii) HNO\(_3\). is an oxidizing acid. Any hydrogen produced is oxidized to water.

(e) (i) 2Cu(NO\(_3\))\(_2\) \(\to\) 2CuO\(_{(s)}\) + 4NO\(_{2(g)}\) + O\(_{2(g)}\)

(ii) NH\(_4\)NO\(_3{(s)}\) \(\to\) N\(_2\)O(_{(g)}\) + 2H\(_2\)O\(_{(g)}\)

Correct Answer: A. only

Explanation

The word 'sole' in the context of the sentence refers to one and only. This is closely related to the concept of 'only', which refers to alone in a class or category.

Correct Answer: D. clever

Explanation

The word ingenious refers to something (a person, device, or scheme) that is clever, original, and inventive. It implies a high degree of intelligence and skill in its conception.

Let's examine the options:

• A. suspicious: Causing one to have the idea or impression that something is wrong or bad. This does not describe the quality of the scheme itself, but rather a reaction to it.

• B. ambitious: Having a strong desire and determination to succeed. While an ingenious scheme might be part of an ambitious plan, ambitious describes the scope or the goal, not the cleverness of the design.

• C. deceitful: Misleading; intending to deceive. A robber's scheme is certainly likely to be deceitful, but ingenious emphasizes the *cleverness and inventiveness* of the plan, not just its deceptive nature. A plan can be deceitful without being particularly ingenious.

• D. clever: Quick at learning and understanding things; intelligent. Dexterous in action or thought; skillful. This option directly aligns with the core meaning of ingenious, highlighting the intelligence, originality, and skill involved in devising the scheme.

In the given sentence, the ingenious scheme suggests that the robber's plan was very smart, well-devised, and perhaps original, even if it ultimately failed. Clever is the best fit for this meaning.

The final answer is D

Correct Answer: D. 30°

Correct Answer: C. trade, improved rural conditions and industrialization

Correct Answer: D. 11

Explanation

Fear runs all through the novel, and dictates the behaviour of the boys. Right from the day they appear on the island, the boys are seized with various types of fear. These manifest in some of the boys and in their general comportment. The fear of being marooned forever is Piggy's immediate preoccupation. He pesters Ralph with his sentiments. Not even Ralph's assurance that his own father, a pilot, will come for them in due course will allay Piggy's fears. Throughout his existence on the island, Piggy draws attention to actions that are likely to get them rescued, such as running to swim and keeping the fire going. All the boys, except perhaps Simon, are afraid of the beast. The beast is not known and so the fear of it is not tangible.

Perhaps this is what makes the boys' situation as dangerous as it is. This type of fear leads them to tackle their uneasiness by trial and error — hunting, dancing and fighting in order to sweep the fear under the carpet. Ralph is particularly afraid that the unity of the group may disintegrate and the group may become debased. What begins as .a mere reminder to the boys to use the toilet and drinking and washing places as designated, turns real when the boys break into two antagonistic groups. Despite Jack's outward show of toughness and capacity to lead, he struggles to hide his own fear of the beast. He tries hard to look natural, but intimidates others to feel on top of events. He easily keeps a boy tied up awaiting his pleasure; he dictates who may have meat, and offer Ralph and the others meat because he decides to. Jack's fear intensifies with the murder of Simon and hardens into a strong desire to eliminate Ralph. In this development, Ralph looks like a prophet. His premonitions and real dislike of Jack's behaviour are significant.

Though fear seems to be collectively felt by the boys, Simon appears to be the only one not affected like the others. Naturally, without fear, he demystifies the fear in the novel. Insightfully, he comments that the beast might just be themselves. This observation, which might have saved these boys, is ignored. Simon's ultimate discovery is never revealed as he is killed by the others, who remain afraid of the beast, which he has discovered to be a harmless, undignified, dead man. It may be said that several actions of the children are driven by fear of one kind or the other.

Correct Answer: C. Jos Plateau