Explanation

(a) When a standard hydrogen electrode is connected to a standard zinc half-cell the emf measured is 0.76V. The negative sign implies the flow of electrons from the zinc electrode to the hydrogen electrode.

(b)(i) Anode/ Zn electrode

Zn(s) → Zn\(^{2+}\)\(_{(aq)}\) + 2e\(^-\) / Zn(s) – 2e\(^-\) → Zn\(^{2+}\)\(_{(aq)}\)

Cathode/Cu electrode

Cu\(^{2+}\) \(_{(aq)}\) + 2e\(^-\) → Cu(s)

(ii) Zn(s) + Cu\(^{2+}_{(aq)}\) → Zn\(^{2+}_{(aq)}\) + Cu(s)

(iii) Anode/Zn electrode – oxidation

Cathode/Cu electrode – reduction

(iv) Eocell = Eored – Eooxid

= (0.34 V) – (-0.76 V)

= + 1.10 V

(c) (i) - Textile

- Brewery

- Plastic

- Refinery

- Cement

- Food [e.g flour, tea, sugar, etc]

- Pharmaceutical

- Fertilizer

- Metallurgical

- Paint

- Soap and detergent

- Ceramic

- Rubber

- Glass

- Etc

(ii) - nearness to raw materials / feed stock

- nearness to market

- labour supply

- transportation

- nearness to power supply

- government policy

- away from residential area

- availability of water

(iii)- Improvement in the standard of living

- Employment opportunities

- Development in the community

- Pollution: air, noise, water, thermal

- Social effects

(d)(i) Hydrogen peroxide reduces silver oxide to silver metal/H2O2is oxidized to O2

A + H\(_2\)O\(_2\)\(_{(aq)}\) → 2Ag\(_{(s)}\) + H\(_2\)O\(_{(l)}\) + O\(_{2(g)}\)

Explanation

(a) Consignment Note: It is a contract of carriage of goods between the carrier and the seller in home trade.

Uses:

• It is used when goods are sent on sale or return basis to an agent;
• It is used when goods are sent by other means other than the sellers vehicles;
• It gives details of the goods and the consignee;
• It states whether freight has been paid or not;
• It is used as evidence of delivery of goods.

(b) Delivery Note: It is a document sent by the seller to the buyer to acknowledge the receipt of goods sent.

Uses:

• It contains a description of the goods, the address to which it is sent
• without price;
• Its purpose is to allow the buyer to check the details of the goods on arrival;
• It is used as evidence of goods delivered before invoices are issued in credit sales;
• It is used when goods are transported by the seller’s vehicles.

(c) Bill of Lading: It is a contract of carriage of goods between an exporter and the ship owner.

Uses:

• This is a document used in the shipping of goods;
• It serves as evidence of the contract of carriage;
• It is the document of title to the goods which enables importers to clear goods at the port;
• It gives the details of the goods and their destination;
• It serves as an acknowledgment of the goods by the shipowner.

(d) Bills of Sight: It is a document prepared by the importer stating the details of the goods pending the arrival of bill of lading.

Uses:

• This is used pending the arrival of the bill of lading that contains details of goods;
• It contains details of the cargo to allow the importer to inspect the goods on arrival;
• It is used to calculate custom duties.

Correct Answer: D. ordered Peter to let down his net for a catch, just before he was called

Correct Answer: C. agricultural development projects

Correct Answer: D. mechanisation is fully adopted

Correct Answer: C. criticism of the narrators

Correct Answer: B. Plunge pools

Correct Answer: B. X/2 g

Correct Answer: C. 11

Explanation

T = {-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

n(T) = 11

Correct Answer: C. N40.00