# NSO Level 2- Science Olympiad (SOF) Class 6: Questions 81 - 85 of 100

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## Question number: 81

» Motion and Measurement of Distances

Appeared in Year: 2013

### Question

If a pith ball is repelled by a rubber rod, what can be deduced about the charges on the pith ball and the rubber rod?

### Choices

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

a. | Either the rod or the pith ball is charged but not both. | |

b. | Only the pith ball is charged. | |

c. | Only the rod is charged. | |

d. | The rod and the pith ball carry charges of the same sign. |

## Question number: 82

Appeared in Year: 2013

### Question

Deficiency of which of these will cause anaemia?

### Choices

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

a. | Vitamin D and iron. | |

b. | Vitamin K and phosphorus | |

c. | Vitamin and iron | |

d. | Vitamin A and calcium |

## Question number: 83

Appeared in Year: 2013

### Question

Find out the wrong term in the number series below.

### Choices

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

a. |
| |

b. | 48 | |

c. | 24 | |

d. | 2 |

## Question number: 84

Appeared in Year: 2013

### Question

Which of the following statements is true about prime numbers?

### Choices

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

a. | There are a finite number of prime numbers. | |

b. | A whole number is either prime or it can be expressed as a product of primes. | |

c. | Every prime number is odd. | |

d. | There is no largest prime number. |

## Question number: 85

Appeared in Year: 2013

### Question

In given figure, which of the following switches need to be closed to change electrical energy to only sound energy?

### Choices

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

a. | A, B, C, and E | |

b. | A, B, D, and E | |

c. | A, C, and E | |

d. | A, B, and C |