Given that f: x --> x\(^2\) - x + 1 is defined on the Set Q = { x : 0 ≤ x < 20, x is a multiple of 5}. find the set of range of F.

• A. {21, 91, 221}
• B. {21, 91, 221, 381}
• C. {1,21, 91, 221}
• D. {1,21, 91, 221,381}

Five metals represented by the letters V to Z are arranged in order of their reactivity as shown . V>W>X>Y>Z. Which of the metals is most likely extracted by the electrolysis of its fused chloride?

• A. V
• B. W
• C. X
• D. Z

Samson is ____ the jollof rice you prepared

• (a)feeling the taste
• (b)tasting the taste
• (c)testing the taste
• (d)tasting

The market structure in which there is interdependence of price-output policies is

• A. a pure monopoly
• B. an oligopoly
• C. a pure competition
• D. a monopolistic competition

After each of the following sentences, a list of possible interpretations of the sentence is given. Choose the interpretation that you consider most appropriate for each sentence.

Audu was certainly born with a silver spoon in his mouth.This means that

• A. he was born into a rich family
• B. his parents gave him a silver spoon when he was born
• C. he was born in the age of miracle
• D. his parents could not help him

Choose the option that has the same consonant sound as the one represented by the underlined letter(s).

business?

• A. grace
• B. rice
• C. eyes
• D. sink

The function of commerce in relation to production is

• A. helping in the extraction of raw materials from nature
• B. yielding result
• C. providing a link between the different stage of conversion of good
• D. satisfying

Explain why it is desirable to install an air conditioner near the ceiling of a room and not close to the floor.

The Jews ignored Rehum's order to stop he reconstruction of the Temple following an advice from

• A. Isaiah and Jeremiah
• B. Zerubbabel and Joshua
• C. Jattenai and Darius
• D. Haggai and Zechariah

(a) (i) Define standard electrode potential.

(ii) State two factors that affect the value of standard electrode potential.

(iii) Give two uses of the values of standard electrode potential.

(iv) Draw and label a diagram for an electrochemic cell made up of Cu\(^{2+}\)/Cu; E° = +0.34 V Zn\(^{2+}\)/Zn; E° = -0.76 V

(v) Calculate the e.m.f. of the cell in (a)(iv) above.

(b) (i) In terms of electron transfer, define: I. oxidation; II. oxidizing agent.

(ii) Balance the following redox reaction: MnO\(^{-4}\) + l\(^{-}\) \(\to\) l\(_{2}\) + Mn\(^{2+}\)

(c) Classiify each of the following oxides as basic, amphoteric, acidic or neutral: (i) Carbon (II) oxide; (ii) Sulphu (IV) oxide; (iii) Aluminium oxide; (iv) Lithium oxide.

(d) What is hydrogen bonding?