a) Define the following in term:. of electron transfer: (i) oxidation; (ii) reduction.

(b)(i) Determina the oxidation stale of phosphorus in each of the following structures: I. POCI\(_3\) II. PH\(_3\).

(ii) State with reasons whether the following compounds will form acidic, neutral or basic aqueous solutions: I. NaNO\(_3\) II. Na\(_2\)H\(_4\)CI; Ill. Na\(_2\)CO\(_3\).

(c) Consider the set-up

(i) What is the gas produced in the experiment illustrated by the set-up above?

(ii) Name the method of collection of gas

(iii) Give a reason for your answer in (c)(ii) above

(iv) State the function of the concentrated H\(_2\)SO\(_4\) in the conical flask

(v) Give of collection of the gas one I. physical property; II. chemical property of the gas

(vi) State one chemical test to identify the gas.

(d) A 4.3 g hydrated sodium tetraoxosulphate (VI) (Na\(_2\)SO\(_4\).xH\(_2\)O) was heated to remove the water of crystallization. The remaining anhydrous salt had a mass of 2.12 g. Calculate the value of x in the t I hydrated salt. [H = 1; O = 16; Na = 23; S = 32 ]

Solve \(9^{2x + 1} = 81^{3x + 2}\)

• A. \(\frac{-3}{4}\)
• B. \(\frac{-2}{3}\)
• C. \(\frac{4}{5}\)
• D. \(\frac{3}{2}\)

These questions are based on General Literary Principles.

The narrative style in which the hero tells his own story directly is the.

• A. subjective
• B. first-person
• C. third-person
• D. objective

In question below fill the gap with the appropriate option: My experience in Lagos last week was .... about

• A. something to excite
• B. nothing to explain at home
• C. nothing to write home
• D. something to celebrate

A story which explains a natural phenomenon is

• A. legend
• B. parable
• C. myth
• D. fiction

The rules which govern the internal management of a firm and its financial affairs in a partnership business is a?

• A. memorandum
• B. bye-law
• C. deed
• D. financial regulation

If forty people donated N6 a month to a cooperative society for one year, how much would be collected?

• A. N288
• B. N2880
• C. N28,000
• D. None of these

Ribosomes are found in all living cells. What is their function?

• A) cellular respiration
• B) synthesis of proteins
• C) excretion of waste products
• D) intracellular transport

When a worker earns more than the wage just sufficient to keep him in his job, the excess income is called?

• A. an opportunity cost
• B. an economic rent
• C. transfer earnings
• D. surplus value

This question is based on Thomas Hardy's Tess of the d'Urbervilles.

From the tragedy of Tess, it can be said that Thomas Hardy is concerned with the evils of

• A. modernization
• B. industrialization
• C. democratization
• D. colonization