Question : For a missile launched with a velocity less than the earth's escape velocity, the total energy is 

Option 1: either positive of negative

Option 2: Negative

Option 3: Zero

Option 4: Positive

Question : What will be the effect on inferior commodities when the income of the consumers rises?

Option 1: Negative effect

Option 2: Positive effect 

Option 3: No effect

Option 4: First increase then decrease 

Question : When demand for a good increases with an increase in income, such a good is called 

Option 1: superior good 

Option 2: giffin good 

Option 3: inferior good 

Option 4: normal good 

Question : In which of the following cases does the law of demand fail?

Option 1: Giffen goods

Option 2: Normal goods

Option 3: Inferior goods

Option 4: Both Giffen and inferior goods

Question : The country can improve its balance of payments by devaluation when the sum of elasticity of demand for exports and imports is _____________.

Option 1: less than unity

Option 2: equal to unity

Option 3: greater than unity

Option 4: zero