# Direct and Inverse Proportions - Class 8 Maths MCQs (Free Practice Test)

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A select subset of questions has been made available here.

You can use this for preparation purpose.

Once you are ready, click on 'Take Quiz' to start the QUIZ.

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**Question :**

14 pumps of equal capacity can fill a tank in 6 days. If the tank has to be filled in 4 days, then the number of extra pumps needed, are

**Answer :**

21 | |

7 | |

24 | |

28 |

**Question :**

If two quantities x and y are related to each other in such a way that xy is a constant, then x and y are said to be in

**Answer :**

inverse variation | |

direct variation | |

variation | |

none of these |

**Question :**

If the value of two quantities are related in such a way that a change in one result is a corresponding change in the other, then two quantities are said to be in

**Answer :**

direct variation | |

inverse variation | |

variation | |

none of these |

**Question :**

If ten pipes through which water flows at the same rate can fill a tank in 28 minutes. If three pipes go out of order, how long will the remaining pipes take to fill the tank ?

**Answer :**

40 minutes | |

40 minutes | |

56 minutes | |

42 minutes |

**Question :**

The cost price of 4 kg of sugar is Rs. 60. What will be the cost price of 20 kg of sugar ?

**Answer :**

Rs. 200 | |

Rs. 300 | |

Rs. 400 | |

Rs. 450 |

**Question :**

x and y are in direct variation. I f y = 10 when x - 5, then value of y when x = 10, is

**Answer :**

2 | |

5 | |

10 | |

20 |

**Question :**

If two quantities x and y are related to each other in such a way that x/y remains a positive constant, then x and y are said to be in

**Answer :**

inverse variation | |

direct variation | |

variation | |

none of these |

**Question :**

5 bags of wheat weigh 200 kg. How many such bags of wheat will weigh 800 kg ?

**Answer :**

40 | |

20 | |

15 | |

10 |

**Question :**

A train 150 m long, is running at a speed of 90 km/hr. Then time taken by the train to cross a tree is

**Answer :**

3 sec | |

4 sec | |

5 sec | |

6 sec |

**Question :**

If a train 120 m long crosses a man in 15 seconds. Then the speed of the train is

**Answer :**

6 m/s | |

7 m/s | |

8 m/s | |

9 m/s |