WASSCE CHEMISTRY MAY/JUNE  2019 (SSCE WAEC MAY/JUNE 2019 CHEMISTRY)

1. The periodic table is na arrangement of element according to their

A. oxidation number

B. atomic number

C. Mass number

D. Number of neutrons

2. A solid substance with high melting and boiling points is likely to be

A. covalent compound

B. a dative covalent compound

C. an electrovalent compound

D. a non metal

3.Which of the following metal reacts slowly with cold water

WASSCE CHEMISTRY MAY/JUNE  2018 (SSCE WAEC MAY/JUNE 2018 CHEMISTRY)

1. Which of the following raw materials is used in the plastic industry?

A. Ethene

B. Methane

C. Sulphur

D. Hydrogen

2

2. Which of the following organic compounds can undergo both addition and substitution reactions?

A. Pentane

B. Benzene

C. Propane

WASSCE CHEMISTRY MAY/JUNE  2017 (SSCE WAEC MAY/JUNE 2017 CHEMISTRY)

1. Which of the following species determines the chemical properties of an atom?

A. Electron

B. Neutron

C. Nucleus

D. Proton

2

2. The following glasswares are used to measure the volume of liquids except

A. graduated beaker

B. pipette

C. test tube

WASSCE CHEMISTRY MAY/JUNE  2016 (SSCE WAEC MAY/JUNE 2016 CHEMISTRY)

1. The following atoms of carbon ¹²₆C, ¹³₆C and ¹⁴₆C can be described as?

A. Allotropes

B. Isomers

C. Isotopes

D. Isotones

2. An atom X consist of 6 protons, 6 electrons and 7 neutrons. Which of the following representations of the atom is correct?

WASSCE CHEMISTRY MAY/JUNE  2015 (SSCE WAEC MAY/JUNE 2015 CHEMISTRY)

1.The negatively charged particle in an atom is the

A. Electron

B. Neutron

C. Positron

D. Proton

2. How many orbits are contained in an atom with atomic number 13?

A. 7

B. 6

C. 5

D. 3

WASSCE CHEMISTRY MAY/JUNE  2014 (SSCE WAEC MAY/JUNE 2014 CHEMISTRY)

1. The shape of CH₄ is

A. linear

B. Planar

C. Pyramidal

D. tetrahedral

2. The crystal layers in graphite are held together by

A. covalent bond

B. electrostatic forces

C. ionic bond

D. van dar waal’s forces

3.  Hydrogen bonds are formed between molecules containing Hydrogen atom bonded to a

A. strongly electronegative atom

WASSCE CHEMISTRY MAY/JUNE  2013 (SSCE WAEC MAY/JUNE 2013 CHEMISTRY)

1. Which of the following instrument is used in detecting the presence of radiation?

A. Cathode ray tube

B. Geiger-Muller counter

C. mass spectrometer

D. X-ray tube

2. The molecule which has linear shape is

A. CH₄

B. NH₃

C. H₂S

D. CO₂

1. The number of orbitals in a p – sub level of an atoms is

A. 2

B. 3

C. 5

D. 6

2. Which of the following electron configurations represents that of a atom in its ground state 

A. $1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{1}}3{{p}^{1}}$

B.  $1{{s}^{2}}2{{s}^{1}}2{{p}^{1}}$

C. $1{{s}^{2}}2{{s}^{1}}2{{p}^{3}}$

D.$1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{0}}$

3. A beam of particles was passed between charged plates as illustrated in the diagram below

WASSCE CHEMISTRY MAY/JUNE  2011 (SSCE WAEC MAY/JUNE 2011 CHEMISTRY)

1. How many isotopes has hydrogen?

A. 2

B. 3

C. 4

D.5

2. Which of the following electrons configuration correctly represents an inert element?

A. 1s² 2s² 2p⁴

B. 1s² 2s² 2p⁶ 3s²

WASSCE CHEMISTRY MAY/JUNE 2010 (SSCE WAEC MAY/JUNE 2010 CHEMISTRY)

1. The electron configuration of carbon atom in its excited state is

A.  1s² 2s² 2px¹ 2py¹

B. 1s² 2s² 2px¹ 2py⁰

C. 1s¹ 2s² 2px¹ 2py¹ 2pz¹