Correct Answer: A. Third Republic

Correct Answer: B. competition among buyers

Explanation

An auction is a sale in which buyers compete for a good by placing bids, and the goods sold to the highest bidder. It is done among competing buyers

Correct Answer: B. noisy

Correct Answer: B. a bomb calorimeter

Correct Answer: A. 1,000

Correct Answer: C. barometer

Explanation

Barometer is used in measuring air pressure and predicting weather changes

Correct Answer: C. credit sales

Explanation

The amount N19,075 represents credit sales. In the Sales Ledger Control Account, the 'Sales' line item typically represents credit sales made during the period. Cash sales would usually be recorded directly in the bank or cash account, not in the sales ledger control account. The sales ledger control account is used to record transactions with credit customers, including sales, payments, returns and discounts.

Correct Answer: C. sacked

Explanation

Give someone the boot; To fire, sack or eject someone.

Correct Answer: C. capital

Explanation

(a)(i) The effects of irrigation on crop production are: (1) Irrigation softens the soil for easy tillage operations. (2) It provides moisture in the soil for root absorption. (3) It reduces the amount of salts accumulated in the top soil, which could be harmful to crop plants. (4) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature is very high and plant growth is thus improved. (5) Irrigation enables the crop to be well established even when rain is erratic. (6) It increases crop productivity or crop yield. (7) Irrigation provides humid environment for the breeding of pest and pathogens of crops. (8) It helps in the improvement of microbial decomposition of organic manure to release nutrients for crop plant. (9) Irrigation dissolves nutrients for root absorption. (10) It assists in facilitating crop production all year round. (11) Irrigation encourages the spread of weed seeds.

(ii) The effects of drainage on crop production are: (1) Drainage helps in reclaiming waterlogged soil for crop production. (2) Drainage improves the soil structure thereby improving the water holding capacity of the soil. (3) It improves soil aeration for good root respiration. (4) It gives suitable conditions for the growth of soil microbes responsible for the decomposition of soil organic matter which provides nutrients for plant growth (5) It helps to increase the soil temperature for the benefit of crop plants (6) Drainage also leaches excess salts from soil thereby preventing the death of plants arising from poisoning (7) It makes tillage operations easier. (8) It reduces the incidence of crop diseases. (9) It enhances harvesting of crops, especially swamp rice. (10) It enhances early planting of crops.

(b) The methods of surface irrigation are (i) Contour ditch (ii) border dyke (iii) border ditch (iv) furrow irrigation (v) basin irrigation (vi) wild flooding.

(c) Surface drainage is necessary in crop production because: (i) It removes excess water caused by heavy rainfall especially in heavy soils (ii) it is easier to construct (iii) Irrigation is cheap to establish and maintain (iv) It prevents accumulation of alkalis (v) It increases the activities of microbes in top soil (vi) It helps in the collection and disposal of surface run-off.