Which of the following factors may lead to the underestimation of national income figures?

• A. Availability of skilled statisticians
• B. High volume of exports
• C. Emigration of skilled workers to foreign countries
• D. Subsistence production

This question is based on General Literary Principles

The author of a novel sustains readers' interest through the use of

• A. ambiguity
• B. anecdotes
• C. prologue
• D. suspense

The most important factor ensuring economic development is the?

• A. effective mobilization of domestic savings
• B. presence of foreign capital
• C. formulation of appropriate government policies
• D. attraction of foreign aids and grants

How much heat is emitted when a body of mass 200g cools from 37^oC to 31^oC? (specific heat capacity of the body = 0.4Jg^-1K^-1)

• A. 4800J
• B. 1200J
• C. 480J
• D. 202J

Calculate the distance between points (-2, -5) and (-1, 3)

• A. \(\sqrt{5}\) units
• B. \(\sqrt{17}\) units
• C. \(\sqrt{65}\) units
• D. \(\sqrt{73}\) units

Which of the following is not allotrope of carbon?

• A) diamond
• B) graphite
• C) buck minsterfullerene
• D) none of the above

If y represents the income earned by workers in a factory, find the range of their income which satisfies the following inequality: 4Y - 300 > 500.

• A. y > 300
• B. y > 250
• C. y > 200
• D. y > 150

(a)(i) What are acidic oxides?

(ii) Give one example of each of the following oxides: I. acidic oxide; II. basic oxide; III. amphoteric oxide; IV. neutral oxide

(b)(i) Define each of the following terms; I. Heat II. Heat of neutralization

(ii) Weite the above an equation to illustrate each of the terms in (b)(i) above

(ii) Given that the standard heat of combustion of butane (C\(_4\)H\(_{(10)}\) is + 5877 kJmol\(^{-1}\), calculate the heat of 14.5 g butane. [ H = 1, = 12 ]

(c) (i) Name two allotropes of sulphur

(ii) State one difference between the two allotropes.

(d)(i) Give two characteristics of noble eases

(ii) State one use each of I. He; II. Ar.

(e) State what is observed on warming ammonium trioxonitrate (V) with sodium hydroxide.

The device in which one circuit controls another, especially if the current in the second circuit is large or dangerous is known as

• A. Electromagnetic devices
• B. Magnetic relay device
• C. None at all
• D. Sextant

If the distance between two points on a map with scale 1: 50 000 is 28mm, what is the distance between them on the ground?

• A. 5.6 km
• B. 2.8km
• C. 1.4km
• D. 0.7km