LAUTECH POST-UTME PHYSICS (2010) AND CHEMISTRY (2010,2009)

LAUTECH 2010 PHYSICS POST-UTME PHYSICS

1. Determine the power in horse of a car that is exerting force of 5 x 10 5 N while moving at a constant speed of 10m/s.

A. 6khp

B. 7khp

C. 6.7khp

D. 7.6khp

2. T he frequency of a plane progressively were represented by the equation y = 4sin[200(22/7)t – 0.5t]

N:B 22/7 represents ‘pi’

A. 100Hz

B. 100m/s

C. 1000m/s

D. 1000Hz

3. T he dimension of stress is

A.

ML -2

B.

ML -1 T -2

C.

ML -3 T -2

D.

ML 2 T -2

4. T he half life of a radioisotope is 92 seconds. The N/No left after 2 hours is

A. 54.22

B. 0.368

C. 650.59

D.3.0 x 10 -24

5. H ow much energy is stored in a 20-mH coil when it carries a current of 0.2A ?

A.5 x 10 4 J

B.10 x 10 -4 J

C.8 x 10 4 J

D.4 x 10 4 J

6. I f a radioactive material has a half life of 18days , what fraction of the radioactive nucleic will remain after 54 days?

A. 1/3

B. 3

C. 1/8

D. 8

7. W hat is the magnitude of the electric field at a field point 2m from a point charge of 4nC ?

A. 9Nc

B.9Nm -1

C.0.9NF -1

D.9Nc -1
LAUTECH CHEMISTRY 2010 POST-UTME

1. Electrophiles are
A. Electron deficient species
B. Electron rich species
C. Free radical species
D. Negatively charged species

2. T he basic unit of synthetic rubber is
A. Isoprene
B. Pentane
C. Butadiene
D. Butene

3. T he empirical formula of a hydrocarbon that contains 93.3% carbon is
(C= 12, H= 13)
A. CH
B. CH 2
C. C 2 H
D. C 2 H 2

4. T he type of hybridization in all the carbon in the saturated hydrocarbon is
A. SP 3
B. SP 2
C. SP
D. PS 3

5. W hat are the oxidation number of manganese in the anions MnO 2- and MnO 4- ?
A. +7 and +6
B. +2 and +7
C. +4 and +4
D. +2 and +3

6. T he number of electrons in the K, L, M and N shells of calcium are respectively
A. 2, 8, 8, 2
B. 2, 2, 8, 8
C. 2, 8, 2, 8
D. 8, 8, 2, 2

LAUTECH 2009 CHEMISTRY POST-UTME

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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