# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 910 - 916 of 1732

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## Question number: 910

### Question

Why we wear clothes made of wool in winters?

### Choices

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

a. | Because wool is very cheap. | |

b. | Because wool is a good insulator of heat. | |

c. | Because Woolen garments prevents the outside cold temperature from reaching the body and also prevents the body temperature from going outside by conduction. | |

d. | All of the above |

## Question number: 911

» Mathematics » Rational Numbers

### Question

Addition of rational numbers does not satisfy which of the following property?

### Choices

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

a. | Commutative | |

b. | Closure | |

c. | Associative | |

d. | None of the above |

## Question number: 912

» Mathematics » Lines and Angles

### Question

In vertex is

### Choices

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

a. | Q | |

b. | P | |

c. | R | |

d. | None of the above |

## Question number: 913

» Mathematics » Exponents and Powers

### Question

The value of is

### Choices

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

a. | 81 | |

b. | 6561 | |

c. | 243 | |

d. | 729 |

## Question number: 914

» Mathematics » Lines and Angles

### Question

The fixed end point of the is

### Choices

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

a. | No fixed end point | |

b. | Point B | |

c. | Point A | |

d. | Question does not provide sufficient data or is vague |

## Question number: 915

» Mathematics » Perimeter and Area

### Question

A sector of cut out from a circle has an area of sq cm. The radius of the circle is

### Choices

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

a. | 2.44 cm | |

b. | 2.25 cm | |

c. | 1.44 cm | |

d. | 3 cm |

## Question number: 916

» Mathematics » Symmetry

### Question

Which of the alphabet has many lines of symmetry?

### Choices

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

a. | O | |

b. | J | |

c. | Q | |

d. | T |