Waec Chemistry Past Questions For Year 2004

Question 6

A metal X forms two chlorides with the formulae XCI2 and XCI3. Where is X in the Periodic Table?

What type of bonding exists between X and chlorine in each of the chlorides?

waec 2004

• A. metallic bonding
• B. ionic bonding
• C. covalent bonding
• D. dative bonding

Question 7

A metal X forms two chlorides with the formulae XCI₂ and XCI₃. Where is X in the Periodic Table?

waec 2004

• A. Group ll
• B. Group llI
• C. d-block
• D. s-block

Question 8

One of the characteristics of transition metals is

waec 2004

• A. reducing ability
• B. ductility
• C. ability to conduct electricity
• D. formation of coloured ions

Question 9

A nuclide emits a beta-particle (e) in the process, that atomic number

waec 2004

• A. increases by 1 while the mass numer remains constant
• B. decreases by 2 while the mass number remains constant
• C. remains constant while the mass number decreases by 2
• D. remains constant while the mass number increases by 1

Question 10

What volume of hydrogen would be left over when 300cm³ of oxygen and 1000cm of hydrogen are exploded in a sealed tube? [2H_2(g) + O_2(g) → 2H₂ O_g]

waec 2004

• A. 200 cm³
• B. 400 cm³
• C. 600cm³
• D. 700cm³