Jamb Chemistry 2010 Past Questions and Answers

Question 11:

• JAMB 2010

₁²D + ₁³T → ₂⁴He + ₀¹n + energy
The reaction above illustrates

A. Alpha decay
B. Artificial transmutation
C. Nuclear fussion
D. Nuclear fission

Question 12:

• JAMB 2010

A noble gas with a high power of fog penetration used in aerodrome beacons is

A. Krpton
B. Argon
C. Helium
D. Neon

Question 13:

• JAMB 2010

Permanent hardness of water can be removed by

A. Filtration
B. Adding slaked lime
C. Adding caustic soda
D. Boiling

Question 14:

• JAMB 2010

Substance employed as drying agents are usually

A. Amphoteric
B. Hygroscopic
C. Efflorescent
D. Acidic

Question 15:

• JAMB 2010

Calculate the solubility in mol dm-3 of 40g of CuSO4 dissolved in 100g of water at 120oC.
[Cu = 64, S = 32, O = 16]

A. 4.00
B. 2.50
C. 0.40
D. 0.25