1983 JAMB UTME Chemistry Past Questions

1983

An element is electronegative if

1983

Crude petroleum pollutant usually seen on some Nigerian creeks and waterways can be dispersed or removed by

1983

Which of the following happens during the electrolysis of molten sodium chloride?

1983

Sodium sulphate decahydrate (Na2SO4.10 H2O) on exposure to air loses all its water of crystallization.The process of loss is known as

1983

Which of the following pair of gases will NOT react further with oxygen at a temperature between 30oC AND 400oC

1983

Which volume of 0.5 M H 2SO4 will exactly neutralize 20 cm 3 of 0.1 M NaOH solution?

1983

Stainless steel is an alloy of

1983

Which of these metals, Mg, Fe, Pb and Cu will dissolve in dilute HCI?

1983

In the reactions(I) H2 (g) + 1/2O2(g) → H2O(l); ∆H = -286 KJ(II) C(s) + O2g) → CO2 (g); ∆H = -406 KJ the equations imply that

1983

2.5 g of a hydrate barium salt gave on heating, 2.13 g of the anhydrous salt. Given that the relative molecular mass of the of the anhydrous salt is 208, the number of molecules of water of crystallization of the barium…

1983

Increasing the pressure of a gas

1983

Which of the following separation processes is most likely to yield high quality ethanol (>95%) from palm wine?

1983

In the preparation of some pure crystals of Cu (NO3)2 starting with CuO, a student gave the following statements as steps he employed. Which of these shows a flaw in his report ?

1983

Some metals are extracted from their ores after some preliminary treatments by electrolysis (L), some of both processes (TL). Which set-up in the following for the extraction of ion, copper and aluminium is correct?

1983

The mass of an atom is determined by

1983

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

1983

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

1983

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

1983

3. 06 g of a sample of potassium trioxochlorate (V) (KCIO) was required to make a saturated solution with 10cm3 of water at 25oC. The solubility of the salt at 25oC is [K =39, Cl = 35.5, O = 16]

1983

When sodium dioxonitrate (lll) (NaNO2) dissolves in water, ∆H is positive. The process of dissolution is

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1983 JAMB UTME Chemistry Past Questions

An element is electronegative if

Crude petroleum pollutant usually seen on some Nigerian creeks and waterways can be dispersed or removed by

Which of the following happens during the electrolysis of molten sodium chloride?

Sodium sulphate decahydrate (Na2SO4.10 H2O) on exposure to air loses all its water of crystallization.The process of loss is known as

Which of the following pair of gases will NOT react further with oxygen at a temperature between 30oC AND 400oC

Which volume of 0.5 M H 2SO4 will exactly neutralize 20 cm 3 of 0.1 M NaOH solution?

Stainless steel is an alloy of

Which of these metals, Mg, Fe, Pb and Cu will dissolve in dilute HCI?

In the reactions(I) H2 (g) + 1/2O2(g) → H2O(l); ∆H = -286 KJ(II) C(s) + O2g) → CO2 (g); ∆H = -406 KJ the equations imply that

2.5 g of a hydrate barium salt gave on heating, 2.13 g of the anhydrous salt. Given that the relative molecular mass of the of the anhydrous salt is 208, the number of molecules of water of crystallization of the barium…

Increasing the pressure of a gas

Which of the following separation processes is most likely to yield high quality ethanol (&gt;95%) from palm wine?

In the preparation of some pure crystals of Cu (NO3)2 starting with CuO, a student gave the following statements as steps he employed. Which of these shows a flaw in his report ?

Some metals are extracted from their ores after some preliminary treatments by electrolysis (L), some of both processes (TL). Which set-up in the following for the extraction of ion, copper and aluminium is correct?

The mass of an atom is determined by

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

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

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

3. 06 g of a sample of potassium trioxochlorate (V) (KCIO) was required to make a saturated solution with 10cm3 of water at 25oC. The solubility of the salt at 25oC is [K =39, Cl = 35.5, O = 16]

When sodium dioxonitrate (lll) (NaNO2) dissolves in water, ∆H is positive. The process of dissolution is

Which of the following separation processes is most likely to yield high quality ethanol (>95%) from palm wine?