Revised Answer Key CSIR UGC NET 2020 Exam Download Now Posted by DIWAKAR EDUCATION HUB Categories Important Updates Date February 6, 2021 Comments 0 comment Answer Key – Click Here To Download Url To Download PDF of Life Science Question Answer PDF Fill Your Details & Click on Submit Button Let us know how to get back to you. First Name * Last Name * Email Address * Whats App /Telegram Number * Share: DIWAKAR EDUCATION HUB Previous post UGC NET Paper-1 Current Affairs Magazine Download PDF For Free For May June Exam February 6, 2021 Next post CSIR NET Cut-off 2020 All Subjects February 6, 2021 You may also like GATE Life Science Important Question Answer 2024-Books & Test Series 18 June, 2023 CSIR NET Chemical Science [Chemisty] Important Question Answer 2023 Book 10 June, 2023 Question 32.P implies q biconditional negation of p or q is a tautology 10 June, 2023 Ans- The negation of compound statements works as follows: The negation of “P and Q” is “not-P or not-Q”. The negation of “P or Q” is “not-P and not-Q”.a compound proposition that is always true is called tautology