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Class 8 Maths Chapter 13 Direct And Inverse Proportions Quiz 1 (25 MCQs)

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1. The scale of a map is 1:2, 00, 00, 000. If two cities are 6cm apart on the map, then the actual distance between them is
2. 6 pipes fill a tank in 120 minutes, then 5 pipes can fill it in ..... minutes
3. In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length of the ship is 28 m how long is the model ship?
4. Copies of a book cost Rs 600. What will 400 copies cost?
5. Identify whether the given relation is Direct or Indirect Proportion?Area of cultivated land and the crop harvested
6. What type of variation does this scenario represent?The outside temperature and the number of layers of clothes you need to wear outside to feel comfortable
7. What is the relationship between two quantities in an inverse proportion?
8. Time taken will be less if the speed is increased (with the same distance covered). This sentence relates to
9. Explain how you can identify an inverse proportion from a given set of data.
10. If 15 workers can build a wall in 48 hours, how many workers will be required to do the same work in 30 hours?
11. 12 men can dig a pond in 8 days. How many men can dig it in 6 days?
12. The scale of a map says that 6 cm represents 15 km. What distance on the map represents an actual distance of 6 kilometers?
13. 8 cows can graze a field in 28 days. How long would 4 cows take to graze the same field?
14. There are 100 students in a hostel. Food provision for them is for 20 days. How long will these provisions last, if 25 more students join the group?
15. The time needed to travel a certain distance varies inversely with the rate of speed. If it takes 6 hours to travel a certain distance at 40 miles per hour, how long will it take to travel the same distance at 55 miles per hour?
16. Identify whether the given relation is Direct or Indirect Proportion?The number of workers on a job and the time to complete the job
17. Persons had food provision for 24 days. If 20 persons left the place, the provision will last for:
18. At Sec 2 camp, there is sufficient food for 48 students to last 6 days. If 12 students are absent from the camp, how many more days can the food last?
19. The value of y varies directly with x. Which function represents the relationship between x and y if y = 14 when x = 6.
20. If 'A' can finish a work in 'n' days then part of work finished in 1 day is
21. Sonam is going to a picnic with her family. They are using a road map with a scale of 1 cm representing 12 km to travel to a place A. If they travel on the road for 48 km, what would be the distance covered in the map?
22. X and y are in direct proportion if
23. Boyle's Law states that, for a fixed amount of gas, the volume of the gas at a constant temperature is inversely proportional to the pressure. If a certain gas occupies 9.84 liters at a pressure of 50 centimeters of mercury (cm Hg), what is the approximate pressure when the volume is increased to 12 liters?
24. 8 g of sandal wood cost Rs 40. What will 10 g cost?
25. A car travelling at a uniform speed covers a distance of 50 km in 30 minutes. How far will it travel in 3 hours?
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