Correct Answer: B. Propanal and propanone

Correct Answer: B. no

Correct Answer: C. political right

Correct Answer: A. NONSO

Correct Answer: D. 7/3

Correct Answer: B. 2

Explanation

Gradient = \(\frac{y_2 - y_ 1}{x_2 - x_1}\)

= \(\frac{5.20 - 3.90}{6.85 - 6.20}\)

= \(\frac{1.3}{0.5}\)

= 2

Correct Answer: B. 4.6cm

Explanation

Length of arc = \(\frac{\theta}{360} \times 2\pi r\)

= \(\frac{75}{360} \times 2 \times \frac{22}{7} \times 3.5\)

= \(4.583 cm\)

\(\approxeq\) 4.6 cm (to 2 sig. figs)

Explanation

Major Changes introduced in Nigeria by the Clifford Constitution of 1992 are:

(i) A new legislative council for the colony and protectorate of Nigeria (Northern protectorate not inclusive) was established.

(ii) The Nigerian Council of Lord Lugard was abolished.

(iii) One of the major achievements or changes introduced by Clifford was the introduction of the elective principle in Nigeria.

(iv) A new Executive Council was established for the whole country.

(v) Lagos and Calabar were mostly favoured in the areas of political activities and formation of political parties

(vi) Daily Lagos News, West. African Pilot, etc, were some of the newspapers that helped to further the tempo of political activities.

Correct Answer: B) different speeds of the colour in the glass

Explanation

(a) \((PT)^{2} + (TQ)^{2} = (PQ)^{2}\)

\((PT)^{2} + 6^{2} = 10^{2}\)

\((PT)^{2} = 100 - 36 = 64\)

\(\therefore PT = 8 cm\)

\(\therefore \frac{8}{6} = \frac{14.4}{SR}\)

\(SR = \frac{6 \times 14.4}{8}\)

\(SR = 10.8 cm\)

Area of the quadrilateral QRST = \(\frac{1}{2} (6 + 10.8) \times 6.4\)

= \(53.76 cm^{2}\)

(b) Opp sides of a square = \((\frac{(100 - 10)x}{100} = 0.9x\)

other two sides of the square = \(\frac{(100 + 15)x}{100} = 1.15x\)

Area of the square : \(x \times x = x^{2}\)

Area of the rectangle : \(0.9x \times 1.15x = 1.035x^{2}\)

\(\therefore \text{The ratio of the area of the rectangle to the square} = 1.035x^{2} : x^{2}\)

= \(1.035 : 1\)