(a) Name one metal in each case Which:

(i) exists as a liquid at room temperature,

(ii) can be found in nature in the uncombined state

(b) X and Y are 0.5 mol. dm\(^{-3}\) freshly prepared aqueous solutions of two salts of iron

(II) With excess sodium hydroxide solution, X gave a dirty green precipitate which was not obtained in the case of Y.

The pressure of a gas when cooled at constant volume will decrease because the molecules

• A. collide less frequently with the walls of the container
• B. have the same average kinetic energy
• C. break up into smaller molecules
• D. decrease in number

Which of the following ions is a pollutant in drinking water even in trace amount?

• A) Ca²⁺
• B) Hg²⁺
• C) Mg²⁺
• D) Fe²⁺

Which of the following elements has a ground state electronic configuration with an incomplete penultimate shell?

• A. Iron
• B. Sodium
• C. Aluminium
• D. Calcium

The interior angles of a pentagon are (2x + 5)°, (x + 20)°, x°, (3x - 20)° and (x + 15)°. Find the value of x

• A. 80°
• B. 70°
• C. 65°
• D. 40°

During his first missionary journey, Paul was stoned at

• A. Lystra
• B. Antioch
• C. Perga
• D. Paphos

Mrs. Felicia Ojo borrowed ten (10) tiers of gari from her neighbour, Mrs Corporate Chinedu and promises to return it three fold, the following month. How many tiers of garri will she return?

• A. 3
• B. 13
• C. 30
• D. 10

Fill each gap with the most appropriate option from the list provided.

If you saw the photograph of the man ....... you be able to identify him?

• A. could
• B. would
• C. can
• D. will

In the diagram, ∠ QPR = 90^o. If q² = 25 - r². Find the value of p

• A. 3
• B. 4
• C. 5
• D. 6

An example of a state with an unwritten constitution is

• A. Canada
• B. India
• C. Britain
• D. France