Chemistry
GATE CY topic:chemical-reactions PYQs
Build your understanding with focused practice from past exam papers.
Questions 451–460 of 650. Imported answers require independent review unless marked reviewed.
Question 51
Open questionCYNAT2 marksNeeds review
Assuming no interaction between vibrational and rotational energy levels in HF, the frequency (in cm
, rounded off to the nearest integer) of the R branch line originating from
in its IR spectrum is ______(Given: Rotational constant for HF = 19.35 cm
;
cm
)Log in to check the answer
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Open questionCYNAT2 marksNeeds review
The van der Waals constants
and
for gaseous CO are given as 1.49 L
atm mol
and 0.039 L mol
, respectively. The fugacity (in atm, rounded off to two decimal places) of CO at 35 °C and 95 atm is ________ (Given:
L atm K
mol
)Log in to check the answer
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Open questionCYNAT2 marksNeeds review
At 30 °C, the vapor pressure and density of a 1.0 M aqueous solution of sucrose are 31.207 mm Hg and 1.1256 g/mL, respectively. If the vapor pressure of pure water at 30 °C is 31.824 mm Hg, the activity coefficient (rounded off to three decimal places) of water in the given solution is ________ (Given: The molar mass of sucrose = 342.3 g mol
)Log in to check the answer
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Open questionCYNAT2 marksNeeds review
For the ring opening reaction of cyclopropane to propene at 25 °C, the pre-exponential factor is 4.3 × 10
s
. The entropy of activation (in J K
mol
, rounded off to two decimal places) is ________ (Given:
J s;
J K
;
J K
mol
)Log in to check the answer
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Open questionCYNAT2 marksNeeds review
In a reaction, reactant X is converted to products Y and Z consecutively with rate constants 6.0 × 10
min
and 9.0 × 10
min
, respectively. If the initial amount of X is 12.5 moles, the number of moles (rounded off to one decimal place) of Y formed after 10 minutes is ________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 1
Open questionGAMCQ1 markNeeds review
John Thomas, an ______ writer, passed away in 2018.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
______ I permitted him to leave, I wouldn’t have had any problem with him being absent, ______ I?
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
A worker noticed that the hour hand on the factory clock had moved by 225 degrees during her stay at the factory. For how long did she stay in the factory?
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
The sum and product of two integers are 26 and 165 respectively. The difference between these two integers is ______.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
The minister avoided any mention of the issue of women’s reservation in the private sector. He was accused of ______ the issue.
Your answerChoose one option.
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