What is the molar mass of an alkyne with the formula Cx H 14? (H = 1, C = 12)
- A. 86g
- B. 92g
- C. 98g
- D. 110g
- E. 112g
The following compounds contain the same type of bonds except
- A. sodium chloride
- B. hydrogen chloride
- C. magnesium chloride
- D. potassium chloride
- E. lithium chloride
When magnesium ribbon burns in air, the products are
- A. magnesium nitride and magnesium oxide
- B. magnesium nitride and carbon (ll) oxide
- C. magnesium oxide and steam
- D. magnesium nitride and soot
- E. magnesium oxide and carbon (ll) oxide
Destructive distillation of coal means
- A. heating coal in plentiful supply of air
- B. burning coal in air to produce water and carbon (IV) oxide
- C. heating coal in the absence of air
- D. heating coal in limited supply of air
- E. separating coal into various allotropes of carbon
Study the reaction represented by the equation: Alkanol + Alkanoic acid + conc. H\(_2\)SO\(_4\) → Alkanoate + water. The type of process involved in the reverse reaction is
- A. Neutralization
- B. dehydration
- C. hydrolysis
- D. decomposition
- E. hydrogenation
Which of the following is likely to have the highest degree of hardness?
- A. Carbonated water
- B. Distilled water
- C. Acidified water
- D. Rain water
- E. Lime water
Which of the following is not a halogen?
- A. Silicon
- B. Fluorine
- C. Astatine
- D. Bromine
- E. lodine
The gaseous product formed when ammonia is passed over heated copper (ll) oxide is
- A. oxygen
- B. nitrogen
- C. hydrogen
- D. nitrogen (l) oxide
- E. nitrogen (ll) oxide
Sodium chloride is used in the following processes except in the
- A. treatment of polluted water
- B. preservation of food
- C. separation of soap from glycerol
- D. manufacture of chlorine
- E. manufacture of caustic soda
Alkanols have unexpectedly high boiling points relative to their molar masses because of intermolecular
- A. hydrogen bonding
- B. metallic bonding
- C. covalent bonding
- D. ionic bonding
- E. van der Waals' forces
What is the molar of hydrogen sulphide gas in the reaction H2SO4(aq) + 3H2S(g) → 4S(s) + 4H2O (l)n represented by the following equation?
- A. Reducing agent
- B. A bleaching agent
- C. A dehydrating agent
- D. A sulphonating agent
- E. An oxidizing agent
Which of the following reactions is accompanied by the first ionization energy of an element X?
- A. X +(aq) → X 2+ (aq) + e-
- B. X - (g) → X(g) + e-
- C. X+ (g) → X2+ +e-
- D. X (g) → X+ (g) +e-
- E. X(s) → X + (g) + e-
The following compounds will decompose on heating except
- A. NaHCO3
- B. K2CO3
- C. MgCO3
- D. Ca(HCO3)2
- E. ZnCO3
In a chemical reaction, the reacting species possess energy of motion known as
- A. potential energy
- B. free energy
- C. bond energy
- D. kinetic energy
- E. hydration energy
Which of the following electronic structures belongs to a noble gas?
- A. 1s22s2
- B. 1s 22s22p4
- C. 1s22s22p63s23p6
- D. 1s22s22p2
- E. 1s22s22p 63s23p3
The positive of an element in the Periodic Table is determined by
- A. its density
- B. its atomic radius
- C. its relative atomic mass
- D. the number of protons in its atom
- E. the number of neutrons in its atom
Mg\(_2\) + 2HCI\(_{(aq)}\) → MgCI\(_{2(g)}\) + H\(_{2(g)}\).
From the equation above what mass of hydrogen would be produced if 12.0 g of magnesium reacted completely with dilute hydrochloric acid? (H = 1, Mg = 24)
- A. 1.0g
- B. 2.0g
- C. 6.0g
- D. 12.0g
- E. 24.0g
When water is dropped on calcium carbide, the gaseous product is an
- A. alkane
- B. alkene
- C. alkyne
- D. alkanol
- E. alkanal
How many faradays of electricity are required to liberate 9g aluminium? (AI = 27)
- A. 0.1
- B. 0.3
- C. 1.0
- D. 2.7
- E. 3.0
Glucose can be obtained from starch by
- A. hydrogenation
- B. dissoiation
- C. hydrolysis
- D. dialysis
- E. dehydration
If the volume of a given mass of gas at 0oC is 27.3cm3, what will be the volume of the gas at 10oC, pressure remaining constant?
- A. 2.73cm3
- B. 28.3cm3
- C. 37.3cm3
- D. 273cm3
- E. 283cm3