Which of the following statements about underground drainage is true

• A. Ditches are constructed to remove excess water
• B. Ditches are dug from a source of water to the farmland
• C. Furrows are constructed to direct water out of the farmland
• D. Water seeps into tiles to reach an outlet where it is discharged

(a) Explain the terms:

(i) transmutation as it relates to radioactivity; (ii) stopping potential.

(b) \(^{23}_{11}A + ^2_1B\) —> \(^p_qC\) + proton

\(^p_qC\) —> \(^r_sE\) + beta

A nucleus C, formed artificially from A and B radioactive and quickly decays to another nucli E as indicated in the nuclear equations abc Datermine the values of p, q, r and s.

(c) A certain metal of work function 1.6 eV is irradiated with ultra-violet light of wavelength 3.6 x 10\(^{-7}\) Calculate the maximum

(i) kinetic energy of ejected electron in joules;

(ii) speed of an emitted electron. (1eV = 1.6 x 10\(^{-18}\) J; C = 3.0 x 10\(^{8}\) ms\(^{-1}\); m, = 9.1 x 10\(^{-31}\) kg; h = 6.6 x 10\(^{-34}\) Js)

(d) If source of the ultra-violet light in (c) above is mo away from the surface of the metal, state the of on the maximum speed of the ejected electron

A country's constitution could be derived from the following sources except?

• A. judicial precedents
• B. customary sources
• C. statutory sources
• D. party manifestos

Choose the option that best conveys the meaning of the underlined portion in the following sentence; The two sprinters were runningneck and neck

• A. exact level
• B. very slowly
• C. very fast
• D. with their necks together

Fill in the gap with the option that best completes the sentence.

If James fails his examination, his teachers, his parents, his friends, or I ______ to be blame.

• A. are
• B. is
• C. am
• D. not

Which of the following features is common to all retailers

• A. Operating as sole-proprietors
• B. Selling to the final consumers
• C. Operating with small capital
• D. Selling on hire purchase to consumers

Which of the following is an igneous rock?

• A. sandstone
• B. granite
• C. chalk
• D. limestone

...In the territory of Jeezreel the dogs shall eat the flesh of Jezebel...so that no one can say, This is Jezebel.

In the statement above, Jehu was referring to the prophecy of

• A. Elijah
• B. Elisha
• C. Nathan
• D. Micah

The branch of physics that deals with the motion of objects and the forces acting on them is called:

• A. Electromagnetism
• B. Thermodynamics
• C. Mechanics
• D. Quantum mechanics

The greenhouse effect is a climatic condition associated with the presence of excess

• A) CO₂
• B) H₂S
• C) NO
• D) NH₃