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CHSE Odisha Elective Chemistry Practice Questions - Council of Higher Secondary Education, Odisha (CHSE Odisha) Higher Secondary (+2) Elective Chemistry (Science stream) Exam

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About this Exam

Prepare with the CHSE Odisha Elective Chemistry Practice Questions - Council of Higher Secondary Education, Odisha (CHSE Odisha) Higher Secondary (+2) Elective Chemistry (Science stream) Exam practice quiz. This question bank includes 100 questions covering number, solution, enthalpy, pressure, and water. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

Sample Questions

Question 1
The number of moles in 36 g of water (H2O; M = 18 g mol^-1) is:
2.0 mol
1.0 mol
0.5 mol
18 mol
Question 2
How many molecules are present in 0.5 mol of CO2? (NA = 6.022 x 10^23 mol^-1)
3.011 x 10^23
6.022 x 10^23
1.204 x 10^24
3.011 x 10^22
Question 3
A sample contains 40% C, 6.7% H and 53.3% O by mass. Its empirical formula is: (C=12, H=1, O=16)
CH2O
C2H4O
CH2O2
C2H6O
Question 4
In the reaction 2H2 + O2 → 2H2O, if 4 mol H2 and 1 mol O2 react, the limiting reagent is:
O2
H2
H2O
Neither; both are exactly stoichiometric
Question 5
Molarity of a solution prepared by dissolving 5.85 g NaCl (M = 58.5 g mol^-1) in water to make 500 mL solution is:
0.20 M
0.10 M
1.0 M
0.50 M

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Additional Information

CHSE Odisha Elective Chemistry Practice Questions - Council of Higher Secondary Education, Odisha (CHSE Odisha) Higher Secondary (+2) Elective Chemistry (Science stream) Exam

This practice set contains 100 questions from the matching question bank and focuses on number, solution, enthalpy, pressure, and water. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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Frequently Asked Questions

This quiz contains a total of 100 practice questions carefully selected to test your knowledge on this subject.
Yes, you will have exactly 0 minutes to complete the exam. A countdown timer will be visible once you start.
Yes, you can retake this practice test as many times as you need. The questions and options may be randomized on subsequent attempts to ensure comprehensive learning.

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