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Chemistry FUN Quiz
Test Description: The challenger is expected to have learnt Acid, Bases Salt and QA properly. There are 10 questions.
Instructions: Answer all questions to get your test result.
1) What colour would the precipitate formed be if a few drops of Aqueous Ammonia is added to solution Zinc Nitrate?
A
Blue precipitate formed,
B
White precipitate formed.
C
No precipitate formed.
D
Red-brown precipitate formed.
2) A few drops of aqueous Sodium Hydroxide is added to a testtube of Iron(II) Nitrate solution and was left standing at the table for a few minutes. What is the precipitate's colour?
A
Green
B
Red-Brown
C
White
D
Blue
3) A colourless pungent gas evolved upon warming after aqueous Sodium Hydroxide was added to a solution of aqueous Ammonium Sulfate. What is the gas that evolved?
A
Methane
B
Hydrogen
C
Sulfur Dioxide
D
Ammonia
4) Dilute Nitric Acid is added to Solution X, followed by aqueous Silver Nitrate. It is observed that there is a white precipitation forming. What could X possibly be?
A
Silver Chloride
B
Sodium Chloride
C
Copper (II) Sulfate
D
Ammonium Sulfate
5) Aqueous Ammonia is added to Solution Y and the resulting precipitate is found to be insoluble in excess Aqueous Ammonia . What could Solution Y possibly be?
A
Lead(II) Nitrate and Aluminium Carbonate
B
Lead(II) Nitrate and Aluminium Sulfate
C
Zinc Nitrate and Lead(II) Chloride
D
Lead(II) Sulfate and Aluminium Nitrate
6) Uranium exists commonly as Uranium-235 and Uranium-238. These are called isotopes. What would clearly define an isotope?
A
An isotope has the same number of proton and electrons but different number of neutrons.
B
An isotope has the same number of nucleons but different number of electrons.
C
An isotope has the same number of neutrons and electrons but different number of protons.
D
An isotope has the same number of neutrons but different number of electrons and protons.
7) Francium reacts vigorously with water to produce a strong alkaline solution. What would the formula of francium hydroxide most probably be?
A
Fr2OH
B
Fr(OH)2
C
FrOH
D
Fr(OH)3
8) Which of the following would give a half-filled set of p-orbital if an electron is removed?
A
P
B
C
C
O
D
S
9) 4. Which of the following would have the highest chances of forming a 2+ ion?
A
1s22s22p63s23p3
B
1s22s22p63s23p64s2
C
1s22s22p63s23p1
D
1s22s22p63s23p64s1
10) What would the electronic configuration of Ar3+?
A
[Ne] 3s2 3p4
B
[Ne] 3s2 3p1
C
[Ne] 3s2 3p3
D
[Ne] 3s2 3p6
*select an answer for all questions
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