Question 751:

• JAMB 1992

For a general equation of the nature xP + yQ ≈ mR + nS, the expression for the equilibrium constant is?

A. K (p)^x (Q)^y
B. (p)^x (Q)^y / (R)^m (S)ⁿ
C. (R)^m (S)ⁿ / (p)^x (Q)^y
D. M(R) n (S) / x(P) y (Q)

Question 752:

• JAMB 1992

Which of these statements is TRUE about carbon (IV) oxide?

A. It supports combustion
B. It is strongly acidic in water
C. It is very soluble in water
D. It supports the buring of magnesium to produce magnesium oxide

Question 753:

• JAMB 1992

Which of the following combination of gases is used for metal welding? i. Oxygen and ethyne, ii. Hydrogen and ethyne, iii. Hydrogen and oxygen, iv. Ethyne, hydrogen and oxygen.

A. I and ii
B. Ii and iv
C. I and iii
D. Ii and iv

Question 754:

• JAMB 1992

Which of the following oxides of nitrogen is unstable in air?

A. NO₂
B. NO
C. N₂O₄
D. N₂O_5-

Question 755:

• JAMB 1992

The gas formed when ammonium trioxonitrate (V) is heated with sodium hydroxide is?

A. Hydrogen
B. Nitrogen (IV) oxide
C. Oxygen
D. Ammonium