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Question 1 of 26
1. Question
Silver trioxonitrate (V) on heating, gives
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Question 2 of 26
2. Question
The most reactive halogen is:
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Question 3 of 26
3. Question
0.79g of a gas as s.t.p occupied a volume of
250cm3 What is the relative molecular mass of the gas? [G.M.V. at s.t.p = 22.4dm3CorrectIncorrect -
Question 4 of 26
4. Question
The relationship between the density, D of a gas and the rate (r) at which the gas diffuses is
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Question 5 of 26
5. Question
The pressure exerted by a sample of a gas confined in 5.86dm3container at 200C is 4.1atm. What is the number of moles of the gas in the sample? [R = 0.082dm3 atm mol-1 K-1]
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Question 6 of 26
6. Question
50cm3 of hydrogen are sparked with 100cm3 of oxygen at 110∘C and 1atm. If the whole reaction mixture passes through an alkaline solution of pyrogallol, the volume of the residual gas is
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Question 7 of 26
7. Question
Inter-atomic combination involves the
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Question 8 of 26
8. Question
Which of the following is not a characteristics property of ionic compounds?
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Question 9 of 26
9. Question
The compound with the highest ionic character among the following is
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Question 10 of 26
10. Question
Why is the hydrogen gas not found in the atmosphere? It readily reacts with
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Question 11 of 26
11. Question
Apart from water, the other product(s) of the neutralization reaction between NaOH solution and nitrogen (IV) oxide is/are
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Question 12 of 26
12. Question
An acid and its conjugate base
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Question 13 of 26
13. Question
A complex salt is
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Question 14 of 26
14. Question
What happens to the conductivity of an electrolyte as its concentration reduces?
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Question 15 of 26
15. Question
If the cost of electricity required to deposit 1g of Aluminium is ₦4.00, how much would it cost to deposit 24g of copper? [A = 27, Cu = 64]
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Question 16 of 26
16. Question
The overall reaction in an electrochemical cell is
What is the symbolic representation of the cell?
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Question 17 of 26
17. Question
Which of the following metals can be used as sacrificial cathode for preventing corrosion of a length of iron pipe?
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Question 18 of 26
18. Question
A particle that contains 8 protons, 9 neutrons and
7 electrons could written asCorrectIncorrect -
Question 19 of 26
19. Question
The decreasing order of the magnitude of energy changes is
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Question 20 of 26
20. Question
0.92g of ethanol raised the temperature of 100g of water from 298K to 312.3K when burned completely. What is the heat of combustion of ethanol?
[C = 12; H = 1; O = 16; specific heat capacity of water = 4.2Jg-1K-1]CorrectIncorrect -
Question 21 of 26
21. Question
The highest level of molecular disorderliness is found in
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Question 22 of 26
22. Question
A reaction is spontaneous at all temperature if
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Question 23 of 26
23. Question
Which of the following reactions of marble with 100cm3 of 0.100moldm-3 HCl is fastest?
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Question 24 of 26
24. Question
In the reaction represented by the equation above, the rate of appearance of C is found experimentally to be independent of the concentration of A and to increase four folds when the concentration of B is doubled. The rate law for the reaction is
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Question 25 of 26
25. Question
How is the equilibrium constant for the forward reaction of an equilibrium (Kf) related to that of the reverse reaction (Kr)?
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Question 26 of 26
26. Question
What is the concentration of OH ions of an aqueous solution of pH 4.4?
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