
Remedial - PT, Redox, Speed, ABS
Authored by Staff Seet Seok Beng Stella
Chemistry
7th Grade
Used 1+ times

AI Actions
Add similar questions
Adjust reading levels
Convert to real-world scenario
Translate activity
More...
Content View
Student View
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which statement is correct when a mixture of ammonium carbonate and aqueous potassium hydroxide is warmed?
A gas is produced which forms white precipitate in limewater.
A gas is produced which turns damp blue litmus paper red.
A gas is produced which turns damp red litmus paper blue.
A gas is produced which extinguishes a lighted splint with a “pop” sound.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In which equation(s) does the oxidation state of manganese decrease?
(1) MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O
(2) MnO4- + 8H+ + 5Fe2+ → 5Fe3+ + Mn2+ + 4H2O
(3) 2Mn(OH)2 + H2O2 → Mn2O3 + 3H2O
1, 2 and 3
1 and 2 only
2 and 3 only
3 only
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Using your knowledge of the halogens and their compounds, which statement(s) is/are correct?
(1) Silver astatide is an ionic compound.
(2) Bromine displaces astatine from a solution of potassium astatide.
(3) Astatine is a gas at room temperature.
1 and 2
1 and 3
2 only
3 only
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which property of aluminium suggests it is not a transition metal?
conducts electricity
high melting point
low density
malleable
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which diagram shows the graphs of reaction 1 & 2 (volume of hydrogen produced, V, against time, t) ?
Reaction 1:
10 g of magnesium ribbon with excess 2.0 mol/dm3 hydrochloric acid
Reaction 2:
5 g of magnesium powder with excess 2.0 mol/dm3 hydrochloric acid
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever
or continue with

Microsoft
%20(1).png)
Apple
Others
Already have an account?