# NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension: Questions 623 - 629 of 828

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## Question number: 623

### Question

If the product of two numbers is 21 and their difference is 4, then the ratio of the sum of their cubes to the difference of their cubes is

### Choices

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

a. | 185: 165 | |

b. | 158: 145 | |

c. | 165: 158 | |

d. | 185: 158 |

## Question number: 624

### Question

A lady reaches her office 20 min late by travelling at a speed of 20 km/h and reaches 15 min early by travelling at 30 km/h. By how much time will she be early or late, if she travels at 25 km/h?

### Choices

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

a. | 5 min late | |

b. | 1 min late | |

c. | 1 min early | |

d. | 5 min early |

## Question number: 625

» Biology » Reproduction

### Question

The most essential organ for fertilization is

### Choices

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

a. | Green sepals | |

b. | Mature ovule | |

c. | Colored petals | |

d. | Juicy fruit |

## Question number: 626

» Biology » Plant and Animal Nutrition

### Question

One of the most resistant known biological materials is

### Choices

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

a. | Lignin | |

b. | Sporopollenin | |

c. | Lignocellulose | |

d. | Hemicellulose |

## Question number: 627

### Question

The Puma, the Wardha, the Pranhita are the tributaries of

### Choices

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

a. | Godavari | |

b. | Mahanadi | |

c. | Tapi | |

d. | Narmada |

## Question number: 628

### Question

∆ABC is a triangle with AB = AC and BC = 9 cm. If the height from A to BC is 6 cm, then the height from C to AB (in cm), is

### Choices

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

a. | 6.0 | |

b. | 7.2 | |

c. | 7.5 | |

d. | 8.0 |

## Question number: 629

» Mathematics » Simple Interest and Compound Interest

### Question

If the simple interest for a certain sum at 7 % per annum for 2 years is Rs. 400. What will be the difference between the compound interest and simple interest?

### Choices

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

a. | Rs. 14 | |

b. | Rs. 16 | |

c. | Rs. 12 | |

d. | Rs. 10 |