1.what will be the effect on demand for tea, if the price of coffee Rises
2.the quantity demanded of a commodity X decreases the household income increases what type of a good is x ?
3. if the demand for a commodity Y increases as the price of another commodity X , Rises what is the relation between the two goods ?
4. how does an increase in income affect the quantity demanded of a inferior good ?
5. what is the mean of contraction in demand ?what is mean by increase in quantity demanded ?and what do you understand by change in demand
6. define increase and decrease in demand .
Answers
Answer:
The conditions are:
1. Price of substitute goods falls.
2. Price of complementary goods rises.
3. Income of a consumer falls in case of normal goods.
4. Income of a consumer rises in case of inferior goods.
5. When a preference becomes unfavourable.

Q10. Differentiate between increase in demand and expansion in demand (increase in quantity demanded).
Answer:

Q11. Differentiate between decrease in demand and contraction in demand (decrease in quantity demanded).
Answer:

EXERCISE: NCERT TEXTBOOK QUESTIONS SOLVED
Q4. What do you mean by a normal good? Or
when good is called ‘normal goods’?
Answer: For normal good, with a raise in income,the demand of the commodity also rises and vice versa. Shortely direct relationship exists the income of a coustomer and demand of normal good.For example, a new car, new clothings.
Q5. What do you mean by an ‘inferior good’? Give some examples.
Or
Give the meaning of inferior good