(a) Difference between Advertising and Personal Selling :

(b) There are various techniques of sales promotion which are as follows : 

1. Bonus offers : It is the offer of an article free of cost or at nominal price on the purchase of a specified product. It is a practical persuasion to buy that helps to increase immediate sales and to clear accumulate stock. 

2. Exchange offer: In this method, customers are offered the facility of exchanging old products with the new one. For example, LG Ltd. offered to customers of washing machine that they could exchange their old washing machine and thereby pay less upto f 5000 on the new one. 

3. Coupons : Some organisations issue coupons to prospective buyers through newspapers, direct mail, dealers, package and door-to-door salesman. Coupons are used to introduce new products and to increase sales of established products. 

4. Clearance sale : Sales at reduced prices may be organised at important festivals or other occasions. For example, Khadi Gramodyog Bhavan offers special discount on Khadi products. 

5. Distribution of free samples : Free samples are distributed to selected people to gain consumer acceptance and to popularise the product. This is the effective technique for sale promotion as consumers can test the product before buying it.