Chemistry
2021 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CY 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 49–51 of 65. Imported answers require review unless explicitly marked reviewed.
Question 39
Open questionCYMCQ2 marksNeeds review
The major product formed in the following reaction [substrate shown; (i) LDA (1.1 equiv), (ii) PhCH₂Br (1.1 equiv), (iii) LiAlH₄ (3 equiv)] 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 answerQuestion 40
Open questionCYMCQ2 marksNeeds review
Hexane and heptane are completely miscible. At 25 °C, the vapor pressures of hexane and heptane are 0.198 atm and 0.06 atm, respectively. The mole fractions of hexane and heptane in the vapor phase for a solution containing 4 M hexane and 6 M heptane, respectively, are:
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 41
Open questionCYMCQ2 marksNeeds review
The correct order of Lewis acid strengths of BF₂Cl, BFClBr, BF₂Br and BBr₂ 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