GATE CY year:2017 PYQs & Answers — Page 3

Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 3 of 7

The major product obtained in the following reaction is

Your answerChoose one option.

Diagram for Chemistry question 21 (figure 2)

Diagram for Chemistry question 21 (figure 3)

Diagram for Chemistry question 21 (figure 4)

Diagram for Chemistry question 21 (figure 5)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In the two step reaction sequence given below, the starting bis-sulfone acts as

Your answerChoose one option.

a dienophile and synthetic equivalent of acetylene

a dienophile and synthetic equivalent of ethylene

a dipolarophile and synthetic equivalent of acetylene

a dipolarophile and synthetic equivalent of ethylene

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The major product formed in the following photochemical reaction is

Your answerChoose one option.

Diagram for Chemistry question 23 (figure 2)

Diagram for Chemistry question 23 (figure 3)

Diagram for Chemistry question 23 (figure 4)

Diagram for Chemistry question 23 (figure 5)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The product formed in the following reaction is

Your answerChoose one option.

a 1:1 mixture of

Diagram for Chemistry question 24 (figure 2)

and

Diagram for Chemistry question 24 (figure 3)

Diagram for Chemistry question 24 (figure 4)

Diagram for Chemistry question 24 (figure 5)

Diagram for Chemistry question 24 (figure 6)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The number of possible stereoisomers for cyclononene is __________

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The mobility of a univalent ion in aqueous solution is

at 300 K. Its diffusion coefficient at 300 K is

. The value of X is __________ (up to two decimal places)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For the following consecutive first order reactions

the time (in seconds) required for Y to reach its maximum concentration (assuming only X is present at time

) is __________ (up to two decimal places)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Under physiological conditions, the conversion of CO

to bicarbonate ion by carbonic anhydrase enzyme (MW = 30,000 g mol

) has a turnover number of

. The minimum amount of enzyme (in μg) required to convert 0.44 g of CO

to bicarbonate ions in 100 seconds is __________ (up to two decimal places)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Assume 1,3,5-hexatriene to be a linear molecule and model the π electrons as particles in a one-dimensional box of length 0.70 nm. The wavelength (in nm) corresponding to the transition from the ground-state to the first excited-state is __________

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The standard Gibbs free energy change of the reaction shown below is −2.7 kJ mol

Sn(s) + Pb

= Sn

+ Pb(s)

Given that

is −0.126 V, the value of

in V is __________ (up to two decimal places)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE CY year:2017 PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30