The following acids are non-basic except

• A) methanoic acid
• B) diaxonitrate III acid
• C) ethanedioic
• D) hydrobromic acid

The ammonium compound used in the manufacture of dry cells is

• A. NH₄NO₃
• B. (NH₄)SO₄
• C. NHCCI₄
• D. (NH₄)₂CO₃

The shape of a graphite crystal is

• A. Tetrahedral
• B. Pyramidal
• C. Octahedral
• D. Hexagonal

If one of the following oxides is heated with hydrogen or carbon using a bunsen burner. it is not reduced to the metal, Which one is it?

• A) lead oxide
• B) Magnesium oxide
• C) Copper oxide
• D) Tin oxide

Which of the following statements about intermolecular distances and cohesive forces between gas is correct? They are

• A. Both large
• B. Both negligible
• C. Constant and negligible
• D. Large and negligible

The rate of production of hydrogen gas from the reaction between zinc granules and hydrochloric acid can be increased by

• A. cooling the reaction mixture
• B. using zinc powder instead of zinc granules
• C. using zinc rod instead of zinc granules
• D. carrying out the reaction at a higher pressure

CH₂ CH₂ + H₂SO₄→ CH₃- CH₂-OSO₃H. The reaction illustrated by the equation above is an example of

• A. substitution
• B. oxidation
• C. reduction
• D. addition

In order to remove one electron from a 3S orbital of gaseous sodium atom, about 496KJMol-1 of energy is required. This energy is referred to as

• A. electron affinity
• B. ionization energy
• C. activation evergy
• D. electronegativity

Which of the following properties increases down a group in the Periodic Table?

• A. Atomic radius
• B. Electronegativity
• C. Electon affinity
• D. Ionization energy

Iron can be protected from corrosion by coating the surface with

• A) gold
• B) silver
• C) copper
• D) zinc