Which of the following factors will cause etiolation in crops?

• A. low humidity
• B. high light intensity
• C. high humidity
• D. absence of light

Where is the headquarter of the African Development Bank (ADB) located?

• A. Lome
• B. Adis Ababa
• C. Accra
• D. Abdijan

The focal point of the marketing efforts is the`

• A. seller
• B. profit
• C. product
• D. buyer

Nehemiah decided to go back to Jerusalem because of_____________

• A. The bad state in which Jerusalem was
• B. His very long stay in Susa
• C. The altar God told him build for him
• D. The cruel treatment given to him by his Master

Day-neutral crops are crops that produce flowers regardless of

• A. daylength being longer than the length of night
• B. extremely low temperature
• C. amount of sunlight received by flowering plants
• D. extremely high temperature

The different types of soil are determined by the relative amounts of each of the following components except

• A. rocks
• B. air
• C. water
• D. minerals

Choose the option nearest in meaning to the underlined word(s). Hecommands the confidence and respect of all his subordinates?

• A. request
• B. enjoins
• C. enforces
• D. conjures

Which of the following is a characteristic of pressure groups?

• A. They aim to gain political power
• B. They are funded by the government
• C. They are political parties
• D. They represent the interest of a specific section of the society

A ray undergoes a minimum deviation at 40° when it is incident on equilateral triangular glass prism. Calculate the refractive index of the prism

• A. 1.48
• B. 1.50
• C. 1.53
• D. 1.67

(a) In the Solvay process, explain briefly with equations the functions of the following substances:

• limestone;
• ammonia.

(b) (i) Write a chemical equation for the fermentation of glucose.

(ii) Explain briefly why a tightly-corked glass bottle filled to the brim with fresh palm-wine shatters on standing for some time.

(c) Consider the following metals: Na, Fe, K and Cu.

(i) Arrange the metals in order of increasing reactivity.

(ii) Which of the metals will react with cold water?

(ii) Which of the metals could form coloured salts?

(d)(i) What is aredox reaction?

(ii) Identify which of the following reaction equations are redox.

(I) 2Na + Cl\(_2\) → 2NaCl

(II) AgCl + 2NH\(_3\) → [Ag(NH\(_3\))\(_2\)]Cl

(III) C\(_2\)H\(_2\) + H\(_2\) → C\(_2\)H\(_4\)

(IV) HCl + KOH → KCl + H\(_2\)O

(V) 2FeCl\(_3\) + 2KI → 2FeCl\(_2\) + 2KCl + I\(_2\)

(iii) Give a reason for each of the answers in(d)(ii).

(iv) Write balanced equations of the half reactions for any two of the redox reactions in(d)(ii).