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Chemistry Past Questions and Answers

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Chemistry Questions

Question 341:

The cracking process is very important in the petroleum industry because it.

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A Gives purer products
B Yields more lubricants
C Yields more engine fuels
D Yields more asphalt
E Yields more candle wax

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Question 342:

A gas that can behave as a reducing agent towards chlorine and as an oxidizing agent toward hydrogen sulphide is

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A O<sub style='font-size: smaller;'>2</sub>
B NO
C SO<sub style='font-size: smaller;'>2</sub>
D NH<sub style='font-size: smaller;'>3</sub>
E CO<sub style='font-size: smaller;'>2</sub>

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Question 343:

Which of the following solutions will give a white precipitate with barium chloride solution and a green flame test?

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A Na<sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4</sub>
B CuSO<sub style='font-size: smaller;'>4</sub>
C CaSO<sub style='font-size: smaller;'>4</sub>
D CaCI<sub style='font-size: smaller;'>2</sub>
E (NH<sub style='font-size: smaller;'>4</sub>)<sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4</sub>

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Question 344:

The mass of an atom is determined by

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A Its ionization potential
B Its electrochemical potential
C The number of protons and electrons
D The number of neutrons and protons
E The number of neutrons and electrons

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Question 345:

Which of the following is a neutralization reaction?

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A Addition of sodium chloride solution to potassium chloride solution
B Addition of trioxonitrate (V) acid (nitric acid) to distilled water
C Addition of trioxonitrate (V) acid (nitric acid) to tetraoxosulphate (IV) acid (sulphuric acid)
D Addition of trioxonitrate (V) acid (nitric acid) to potassium trioxonitrate (V) (potassium nitrate) solution
E Addition of trioxonitrate (V) acid (nitric acid) to potassium hydroxide solution

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