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Chemistry and Industry - Jamb Chemistry Past Questions and Answers

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Jamb Chemistry Past Questions

Jamb Past Questions and Answers on Chemistry and Industry

Question 91:


If an element X of an atomic number Z and mass number Y is irradiated by an intense concentration of neutrons, the relevant nuclear equation is?

A. yzX + 10n → y - 1z + 1X
B. yzX + 10n → y + 1zX
C. yzX + 10n → yz + 1X
D. yzX + 10n → y + 1z - 1X


Question 92:


3CuO(s) + 2NH3(g) → 3Cu(s) + 3H2O(I) N2(g) (i).
2NH3(g) + 3Cl2(g) → 6HCl(g) + N2(g) (ii).
4NH3(g) + 3O2(g) → 6H2O(I) + 2N2(g) (iii).
The reactions represented by the equations above demonstrate the?

A. Basic properties of ammonia
B. Acidic properties of ammonia
C. Reducing properties of ammonia
D. Oxidizing properties of ammonia


Question 93:


The oxide that remains unchanged when heated in hydrogen is?

A. CuO
B. Fe2O3
C. PbO2
D. ZnO


Question 94:


0.25 mole of hydrogen chloride was dissolved in distilled water and the volume made up of 0.50 dm3. If 15.0 cm3 of the solution requires 12.50 cm3 of aqueous sodium trioxocarbonate (IV) for neutralization, calculate the concentration of the alkaline solution

A. 0.30 mol dm3
B. 0.40 mol dm3
C. 0.50 mol dm3
D. 0.60 mol dm3


Question 95:


The shapes of CO2, H2O and CH 4 respectively are

A. Bent, linear and tetrahedral
B. Bent, tetrahedral and linear
C. Linear, bent and tetrahedral
D. Tetrahedral, linear and bent






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