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LAUTECH 2009 CHEMISTRY POST-UTME CHEMISTRY LADOKE AKINTOLA UNIVERSITY

LAUTECH 2009 CHEMISTRY POST-UTME

CHEMISTRY

LADOKE AKINTOLA UNIVERSITY

2009

______________________________________________

1. How many unpaired electrons are there in the electronic configuration of an element with atomic number 8?

A. 2

B. 3

C. 4

D. 5

2. Brass and bronze are both metallic alloys. Which of the following constituents is common to both alloys ?

A. Lead

B. Copper

C. Tin

D. Zinc

3. The major process of manufacturing caustic soda on industrial scale is

A. Reduction of brine

B. Fusion of sodium and hydroxide

C. Electrolysis of brine

D. Concentration of brine

4. One mole of propane is mixed with five moles of oxygen . The mixture is ignited and the propane burns completely . What is the volume of the products at s.t.p?

[G.M.V. = 22.4dm 3 mole -1 ]

A. 112.0dm 3

B. 67.2dm 3

C. 56.0dm 3

D. 4.8dm 3

5. The order of decreasing s-character of Sp, Sp 3 & Sp 2 is

A. Sp , Sp 2 , Sp 3

B. Sp 3 , Sp 2 , Sp

C. Sp 2 , Sp , Sp 3

D. Sp , Sp 3 , Sp 2

6. Which of these is not a hydroscopic salt ?

A. Calcium oxide

B. Magnesium chloride

C. Copper(II)oxide

D. Sodium trioxonitrate(V)

7. T he Secondary valence is called

A. Oxidation state

B. Lewis base

C. Coordination number

D. chelates

8. T he formula of the compound formed in a reaction between a trivalent metal , M and a tetravalent non-metal X is

A. MX

B. M 3 X 4

C. M 4 X 3

D. M 3 X 2

9. W hich of these compounds is not used as a fertilizer ?

A. Sodium hydroxide

B. Carbamide

C. Ammonium trioxonitrate

D. Potassium tetraoxosulphateVI

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LAUTECH 2009 CHEMISTRY POST-UTME CHEMISTRY LADOKE AKINTOLA UNIVERSITY

LAUTECH 2009 CHEMISTRY POST-UTME

CHEMISTRY

LADOKE AKINTOLA UNIVERSITY

2009

______________________________________________

1. How many unpaired electrons are there in the electronic configuration of an element with atomic number 8?

A. 2

B. 3

C. 4

D. 5

2. Brass and bronze are both metallic alloys. Which of the following constituents is common to both alloys ?

A. Lead

B. Copper

C. Tin

D. Zinc

3. The major process of manufacturing caustic soda on industrial scale is

A. Reduction of brine

B. Fusion of sodium and hydroxide

C. Electrolysis of brine

D. Concentration of brine

4. One mole of propane is mixed with five moles of oxygen . The mixture is ignited and the propane burns completely . What is the volume of the products at s.t.p?

[G.M.V. = 22.4dm 3 mole -1 ]

A. 112.0dm 3

B. 67.2dm 3

C. 56.0dm 3

D. 4.8dm 3

5. The order of decreasing s-character of Sp, Sp 3 & Sp 2 is

A. Sp , Sp 2 , Sp 3

B. Sp 3 , Sp 2 , Sp

C. Sp 2 , Sp , Sp 3

D. Sp , Sp 3 , Sp 2

6. Which of these is not a hydroscopic salt ?

A. Calcium oxide

B. Magnesium chloride

C. Copper(II)oxide

D. Sodium trioxonitrate(V)

7. T he Secondary valence is called

A. Oxidation state

B. Lewis base

C. Coordination number

D. chelates

8. T he formula of the compound formed in a reaction between a trivalent metal , M and a tetravalent non-metal X is

A. MX

B. M 3 X 4

C. M 4 X 3

D. M 3 X 2

9. W hich of these compounds is not used as a fertilizer ?

A. Sodium hydroxide

B. Carbamide

C. Ammonium trioxonitrate

D. Potassium tetraoxosulphateVI

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