# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 649 - 654 of 1732

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## Question number: 649

» Mathematics » Integers

### Question

Negative of a negative integer is

### Choices

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

a. | Zero | |

b. | Positive | |

c. | Negative | |

d. | None of the above |

## Question number: 650

## Question number: 651

» Mathematics » Algebraic Expressions

### Question

To get the value of a, ________ is to be multiplied on either side of equation (method of elimination).

### Choices

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

a. |
| |

b. | 0 | |

c. | 1 | |

d. | 6 |

## Question number: 652

» Mathematics » Congruence of Triangles

### Question

Which of the following statement (s) is/are false?

### Choices

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

a. | If the hypotenuse of one right triangle is equal to the hypotenuse of another triangle, then the triangles are congruent | |

b. | If two sides and one angle of a triangle are equal to the corresponding two sides and the angle of another triangle, then the two triangles are congruent | |

c. | Two triangles having same area are congruent | |

d. | All a. , b. and c. are correct |

## Question number: 653

» Mathematics » Exponents and Powers

### Question

The solution of is

### Choices

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

a. |
| |

b. | 3 | |

c. | 6 | |

d. | 1 |

## Question number: 654

» Mathematics » Triangle and Properties

### Question

Two chimneys 18 m and 13 m high stand upright in a ground. If their feet are 12 m apart, then the distance between their tops is

### Choices

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

a. | 18 m | |

b. | 5 m | |

c. | 13 m | |

d. | 31 m |