Correct Answer: A. 1,050W

Correct Answer: B. sisters-in-law

Explanation

The correct option is B. sisters-in-law.

Compound nouns formed with a noun and a prepositional phrase (like *sister-in-law*) are pluralized by adding -s to the principal noun (*sisters-in-law*), and all words must be properly hyphenated.

• Option A is incorrectly hyphenated (missing a hyphen between *sister* and *in*).

• Option C incorrectly pluralizes both *sisters* and *laws*.

• Option D lacks proper hyphenation (*inlaw* instead of *in-law*).

Explanation

(a)Causes of the 1953 Kano riot in Nigeria are:

(i) The 1953 motion for self-government in 1956 brought a disagreement and a strained relationship between the Northern and Southern political leaders.

(ii) This disagreement and strained relationship led to the booing and jeering of Northern leaders in the parliament.

(iii) The Northerners decided to retaliate the booing and jeering of their leaders in Lagos.

(iv) The Action Group (AG) led by Chief S.L Akintola toured the Northern Region, aimed at campaigning for self-government for Nigeria.

(v) It was the presence of this group in Kano that sparked off the riot of 1953.

(b) Political implications of the 1953 Kano Riot in Nigeria:

(i)The relationship existing between the Southern and Northern political leaders got worsened.

(ii) The outcome of this riot showed that it is only a federal structure which allows for the autonomy of the regions that can work and hold a country like Nigeria together.

(iii) The London Constitutional Conference of 1953 was constituted as a result of the riot. The 1954 constitution and the government that came up was as a result of this arrangement.

(iv) One of the implications of the 1953 Kano riot was the coming together of NCNC and A.G . A temporary working alliance ensured between them.

Correct Answer: B. watchful

Explanation

vigilant; keeping careful watch for possible danger or difficulties. watchful, observant.

Correct Answer: B. He climbed up into a sycamore tree

Correct Answer: B. to complement gills while on land

Explanation

a)(i) Advantages of alcohol over mercury as a thermometric liquid are:

- Alcohol is cheaper

-Alcohol is easily available

-Alcohol has higher expansivity

- Alcohol has lower freezing point.

(ii) The glass bulb of the thermometer first got heated and expands, therefore the mercury level in it falls. Then the mercury expands and increases more than that of the glass and then rises.

(b) Factors that affect the rate of evaporation of a liquid, temperature exclusively are:

- Pressure, area of liquid surface exposed, humidity, nature of the liquid, wind and dryness of air, etc.

(c)(i) Q = mc

\(\Delta \theta = 100 \times 120 \times (320 - 40)\)

ii) Q = Ml = 100 x 0.25 x 10\(^5)\) = 2500000J

= 2.5MJ

ii) Pt = ml

t = \(\frac{ml}{p} = \frac{2500000}{10000} = 250s\)

(d) Precautions to be considered are:

- Calorimeter should be well lagged.

- Use only dry steam.

- Stir the mixture gently and continually.

- Shield the calorimeter from heat sources.

Correct Answer: B. 5

Explanation

x = \(\frac{2}{3}\) and y = - 6

xy - \(\frac{y}{x}\)

\(\frac{2}{3} - (6)^2 - (-6) \div \frac{2}{3}\)

= -4 - (6) x \(\frac{3}{2}\)

= -4 - (-6) x \(\frac{3}{2}\)

= -4 - (-9)

= -4 + 9

= 5

Correct Answer: A. Economic, Social and legal

Correct Answer: D. being the spokeman of the Muslim in Abyssinia