Question Library
Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.
Showing 1–8 of 8 verified questions
Sort by:
Chemistry
UTME / JAMB 2021
Halogen Family
Solution
Which of the following is a non-metal that remains liquid at room temperature?
A
Chlorine
B
Phosphorus
C
Bromine
D
Helium
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2021
Halogen Family
Solution
The reactivity of fluorine is due to?
A
its high electro negativity
B
small size of fluorine atom
C
availability of D-orbitals
D
strong f-f bond
medium Difficulty
Study Explanation
Chemistry
WAEC / WASSCE 2016
Halogen Family
Solution
Which of the following arrangements shows increasing order of reactivity of the halogens?
A
F2 > Cl2 > Br2 >I2
B
I2 2 22
C
F2 2 22
D
I2 > Br2 > Cl2 > F2
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2010
Halogen Family
Solution
The final products of the reaction between methane and chlorine in the presence of ultraviolet light are hydrogen chloride and?
A
tricloromethane
B
dichloromethane
C
tetrachloromethane
D
chloromethane
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2010
Halogen Family
Solution
The haloalkanes used in dry-cleaning industries are?
A
trichloromethane and tetrachloromethane
B
chloroethene and dichloroethene
C
trichloroethene and tetrachloroethene
D
chloroethane and dichloroethene
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2000
Halogen Family
Solution
In which order are the following salts sensitive to light?
A
Agl > AgCl > AgBr
B
AgCl > Agl > AgBr
C
AgBr > AgCl > Agl
D
AgCl > AgBr > Agl
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 1994
Halogen Family
Diagram
Solution
In the diagram above, R is a mixture of?
A
potassium tetraxochlorate (VII) and concentrated H2SO4
B
potassium trioxochlorate (V) and concentrated H2SO4
C
potassium tetratoxomanganate (VII) and concentrated HCI
D
manganese (IV) oxide and concentrated HCI
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 1987
Halogen Family
Diagram
Solution
The times taken for iodine to be liberated in the reaction between sodium thiosulphate and hydrochloric acid at various temperature are as follows. These results suggest that
A
for a 10o rise in temperature, rate of reaction is double
B
for a 10 o rise in temperature, rate of reaction is halved
C
time taken for iodine to appear does not depend on temperature
D
for a 10 o rise in temperature rate of reaction is tripled
medium Difficulty
Study Explanation