81.
Which of the following markets comes closest to perfect market?

82.
Mr. Raees Ahamd bought 50 litres of petrol when his monthly income was Rs.25000. Now his monthly income has risen to Rs.50,000 and he purchases 100 litres of petrol. His income elasticity of demand for petrol is

83.
Total utility is maximum when

84.
Under which of the following forms of market structure does a firm have no control over the price of its product?

85.
Which is a condition for existence of monopoly?

86.
When price elasticity of demand for normal goods is calculated, the value is always

87.
If the demand for a commodity is inelastic, an increase in its pice will cause the total expenditure of the consumers of the commodity to

88.
Which one of the following is the condition of equilibrium for the monopolist?

89.
In case of monopoly

90.
Income elasticity of demand for normal goods is always