Reasoning Aptitude > Logical Reasoning
ESSENTIAL PART : LOGICAL REASONING MCQs
A guitar does not exist without strings, so
strings are an essential part of a guitar. A band is not necessary to a guitar (choice a). Guitar playing can be learned without a teacher (choice b). Songs are byproducts of a guitar (choice c).
The necessary part of a book is its pages; there is no book without pages. Not all books are fiction (choice a), and not all books have pictures (choice c). Learning (choice d) may or may not take place with a book.
A person or animal must take in oxygen for
respiration to occur. A mouth (choice a) is not essential because breathing can occur through the nose. Choices b and d are clearly not essential and can be ruled out.
An election does not exist without voters. The election of a president (choice a) is a byproduct. Not all elections are held in November (choice c), nor are they nationwide (choice d).
All shoes have a sole of some sort.Not all shoes are made of leather (choice b); nor do they all have laces (choice c).Walking (choice d) is not essential to a shoe.
A diploma is awarded at graduation, so graduation is essential to obtaining a diploma. Employment may be a byproduct (choice c). A principal and a curriculum (choices a and b) may play a role in the awarding of some diplomas, but they are not essential.
Water is essential for swimming”without
water, there is no swimming. The other choices
are things that may or may not be present.
Words are a necessary part of language. Slang is not necessary to language (choice b). Not all languages are written (choice c).Words do not have to be spoken in order to be part of a language (choice a).
A desert is an arid tract of land. Not all deserts are flat (choice d). Not all deserts have cacti or oases (choices a and c).
Without students, a school cannot exist; therefore, students are the essential part of schools. The other choices may be related, but they are not essential.