Post Utme Economics Past Questions and Answers

Question 856:

Common salt is dissolved in water and the mixture is evaporated. The vapour given off is condenseD. The condensed vapour is a ____________

A. Salute
B. Suspension
C. Solvent
D. Solution

Question 857:

When some substances are heated, they change directly into gases without appearing in the liquid state. An examples is ____________

A. Copper
B. Iodine
C. Sodium
D. Sulphur

Question 858:

What is IUPAC name of the compound \(\mathrm{KMnO}_4\) ?

A. Potassium maganate
B. Potassium tetraoxo manganates (vii)
C. Potassium trioxomanganate (iv)
D. Potassium oxomanganate (iv)

Question 859:

Which of the following is the dimension of pressure?

A. \(\mathrm{MLT}^2\)
B. \(\mathrm{ML}^{-1} \mathrm{~T}^2\)
C. \(\mathrm{ML}^{-3}\)
D. \(\mathrm{ML}^{-3} \mathrm{~T}^{-2}\)

Question 860:

Which of the following statement is or are correct about a car moving round a circular track at a uniform speed? (i) Its velocity is uniform (ii) it undergoes an acceleration (iii) The friction between its tyres and the ground provides necessary centripetal force

A. (i) and (iii) only
B. (i) only
C. (iii) only
D. (ii) only