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Question 1 of 22
1. Question
When \(\;\; \scriptsize CuSO_{4}\) solution is treated with ammonia solution drop by drop till it is added in excess, a precipitate is first formed which then dissolves in excess to give a deep blue solution. The deep blue solution is
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Question 2 of 22
2. Question
If 7.0 g of ethane at s.t.p occupies 5.6 dm3, what volume will 7.5 g of ethane at the same condition occupy? (C = 12; H =1; GMV at s.t.p = 22.4 dm3)
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Question 3 of 22
3. Question
Which of the alcohol below is likely to be oxidized to give the acid below:
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Question 4 of 22
4. Question
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Question 5 of 22
5. Question
Which of these elements has the highest first ionization energy?
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Question 6 of 22
6. Question
Which of the following is responsible for the conduction of electricity in a gas enclosed in a glass tube containing two electrodes at a reduced pressure and to which a high voltage is applied?
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Question 7 of 22
7. Question
The type of reaction an alkanoic acid cannot undergo is
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Question 8 of 22
8. Question
What is the pH of 2.5 x 10-3 mol dm-3 barieum hydroxide solution?
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Question 9 of 22
9. Question
The complete oxidation of proan -1-ol yields
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Question 10 of 22
10. Question
Which of the following will change the equilibrium constant of the reaction
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Question 11 of 22
11. Question
Which of the following elements will not undergo the above reaction?
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Question 12 of 22
12. Question
A physical change is exemplified by the
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Question 13 of 22
13. Question
The number of neutrons in the deuterium atom is/are
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Question 14 of 22
14. Question
Which of these is correct about methyl orange?
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Question 15 of 22
15. Question
Which of these does not affect the rate of a particular chemical reaction?
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Question 16 of 22
16. Question
An ideal gas changing volume as temperature rises can be represented by the diagram below:
The point marked x on the graph is
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Question 17 of 22
17. Question
How many isomeric dichlorobenzenes are obtainable?
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Question 18 of 22
18. Question
By accurate description, ozone in the reaction
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Question 19 of 22
19. Question
150 cm 3 of nitrogen II oxide were sparked with 100 cm 3 of oxygen, what volume of nitrogen IV oxide will be produced at s.t.p?
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Question 20 of 22
20. Question
Which of the following ions will interact with water to give a solution of pH < 7?
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Question 21 of 22
21. Question
In the electrolysis of acidified water using platinum electrodes, 1dm3 of oxygen was collected at s.t.p passing 4.5amperes into the electrolytic cell. Calculate the time require to set this amount of gas free. [molar volume of gas at s.t.p 22.4dm3 ;1 Faraday 9650]
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Question 22 of 22
22. Question
Two plugs of glass wool soaked in concentrated ammonia and concentrated hydrochloric acid are placed at the opposite ends of a long tube such that the distance between them is 100 cm2. The ratio of the distance covered by ammonia to that covered by hydrochloric acid when white smoke is first noticed is
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