20000+ Important MCQs for AIR FORCE

1) The ratio of cost price and marked price of an article is 2:3 and ratio of percentage profit and percentage discount is 3 : 2 what is the discount percentage ?

2) A trader mixes 25% kerosene to his petrol and then he sells the whole mixture at the price of petrol. if the cost price of kerosene be 50 % of the cost price of petrol, what is the net profit percentage ?

3) A trader procures his goods from a wholesaler, whose balance reads 1200 g from 1000 g . The trader sells all the procured goods to a customer after marking up the goods at 20% above the cost price. what is his overall percentage profit or loss in the whole transaction ?

4) A trader makes a profit equal to the selling price of 75 articles when he sold 100 of the articles. What % profit did he make in the transaction?

5) The cost of 2 tables is equal to the cost of 5 chairs. If the difference of the cost of one table and one chair is Rs. 1200, then the cost of one chair is ?

6) The influx of domestic sewage containing detergents cause nutrient enrichment in water bodies due to the presence of

7) The oil used in the froth floatation process is

8) Who invented the battery?

9) Malfunctioning of which of the following organs causes jaundice?

10) What frequency range is the High Frequency band?