# NSO Level 1- Science Olympiad (SOF) Class 4: Questions 16 - 21 of 435

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## Question number: 16

### Question

In the number 5621, the digit ________ is in the ten’s place.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 2 | |

b. | 5 | |

c. | 6 | |

d. | 1 |

## Question number: 17

### Question

The missing number in the equivalent fraction is ________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 1 | |

b. | 6 | |

c. | 5 | |

d. | 3 |

## Question number: 18

### Question

The 2 containers contain the same amount of water. What is the change in the water level when ball is dropped in 2^{nd} container?

### Choices

Choice (4) | Response | |
---|---|---|

a. | Water level increased by 1 litre 100 ml | |

b. | Water level increased by 1 litre 400 ml | |

c. | Water level increased by 1 litre 300 ml | |

d. | Water level increased by 1 litre 200 ml |

## Question number: 19

### Question

Which of the following figures has the longest perimeter?

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |

## Question number: 20

### Question

Find the value of

### Choices

Choice (4) | Response | |
---|---|---|

a. | 1000 | |

b. | 115 | |

c. | 225 | |

d. | 213 |

## Question number: 21

### Question

The missing number in the number pattern below is

### Choices

Choice (4) | Response | |
---|---|---|

a. | 8521 | |

b. | 8821 | |

c. | 8215 | |

d. | 9521 |