Correct Answer: A. free will offering for the house of God in Jerusalem

Explanation

(a)(i) Structural isomers are compounds with the same molecular formula but different arrangement of constituent at / or different structures

(ii) CH\(_3\) CH\(_2\) CH\(_2\) CH\(_2\) OH

(b)(i) C\(_5\)H\(_{12}\) + C\(_2\) \(to\) C\(_5\) H\(_{11}\)CI + HCI

(ii)

(iii) Light act as catalyst

(iv) Pentane C\(_2\)H\(_{12}\) would come out first Pentane has a lower molar mass (72) as compared to chloropentane (C\(_5\)H\(_{12}\)CI) (86.5) Hence weaker inter- molecular forces — van der waals' forces

(V) C\(_4\)H\(_{8}\)CI\(_{12}\)

(c)(i)

(ii) %N = \(\frac{0.0313}{ 0.309}\) x 100

= 10.1%

%0 = 100 — (60.5 + 6.5 + 10.1)

= 22.9

C; \(\frac{60.5}{12}\) H; \(\frac{6.5}{1}\) N; \(\frac{10.1}{14}\) O; \(\frac{22.9}{16}\)

C; \(\frac{5.04}{0.72}\) H; \(\frac{6.5}{0.72}\) N; \(\frac{0.72}{0.72}\) O; \(\frac{1.43}{0.72}\)

Empirical formula — C\(_7\)H\(_9\)NO\(_2\)

Correct Answer: A. catalogue

Correct Answer: C. 960W

Explanation

power = \(\frac{\text {work done}}{time}\)

= \(\frac{800 \times 15}{12.5}\)

= 960W

Correct Answer: A. demand is relatively price elastic

Explanation

Price elasticity is a measure of the responsiveness of demand or supply of a good or service to changes in price. The price elasticity of demand measures the ratio of the proportionate change in quantity demanded to the proportionate change of the price .

Correct Answer: C. made sacrifice to God

Explanation

(a) Small scale production involves small capital outlay and therefore results in low level of output. On the other hand, large scale production involves a large scale capital outlay and therefore results in high level of output.

(b)Some of the internal economies of large scale production are :

(i) technical economies: a large firm has the advantage in the use of factor inputs which results in lower cost per unit of output.

(ii)financial economies: a large scale producer can borrow money from financial institutions at lower interest rate because it can offer better collateral security.

(iii)marketing economies: a large firm can buy inputs in bulk and possibly at discounts. It can also pay less on transportation and advertisement which result in lower operating cost.

(iv)managerial economies: when output is increasing, managerial cost increases at a slower rate. Number of managerial staff may increase with output. OR As output increases, specialists can be employed to take charge of the various processes e.g. marketing.

(v) risk-bearing economies: a large firm is able to bear losses arising from its operations as it can provide insurance coverage. OR It can also diversify its product and its market.

(vi)welfare economies: a large firm can provide better conditions of service which may enhance the level of productivity and also attract highly qualified manpower.

(vii) research economies: a large firm can invest huge amount on research and thereby experience technical progress.

Correct Answer: C. 9.4 seconds

Explanation

(a) A disease can be defined as any abnormality in the functions of the tissues, organs or system of the animal body.

(b) The difference between resistance and susceptibility to diseases is that an animal is said to be resistant to disease when it is not affected by an invading pathogenic disease-causing organism or pathogen while the animal is said to be susceptible to disease when it is not able to ward off the effect of the invading pathogenic organism, in which case it manifests disease symptoms.

(c) The economic importance of animal diseases are: (i) The diseases bring about poor growth of animals (ii) Diseases lead to poor feed utilization by animals due to loss of appetite or anorexia (iii) Diseases bring about low yield of products (iv) Diseases in animals produce low income for farmers due to reduced quantity and quality of products and death of the animals.

(d) The factors which determine the degree of an animal's resistance to a disease are: (i) development of immunity, (ii) specie of animal, (iii) innoculation, (iv) level of feeding, (v) age of animal, (vi) physiological condition of the animal. (e) The conditions that may inactivate a pathogen are: (i) low temperature (ii) high temperature (iii) sunlight and x-rays, (iv) high PH medium (v) low PH medium, (vi) dryness or low relative humidity.

Correct Answer: B. aristocrats