Chemistry
2025 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CY 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 13–15 of 65. Imported answers require review unless explicitly marked reviewed.
Question 13
Open questionCYMCQ1 markNeeds review
Upon cooling from room temperature, the magnetic susceptibility of MnO slowly increases until 118 K, and then it decreases. This phenomenon is known as
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 14
Open questionCYMCQ1 markNeeds review
An aqueous solution of Co(ClO₄)₂·6H₂O is light pink in color. Addition of conc. HCl results in an intense blue colored solution due to the formation of a new species. The new species among the following is [Given: Atomic number of Co = 27]
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 15
Open questionCYMCQ1 markNeeds review
For an unambiguous single step synthesis of the following target molecule (TM), the best bond disconnection in its retrosynthesis analysis is
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer