Chemistry is a crucial subject for students preparing for the MHT-CET exam, as it forms a significant part of the syllabus. Mastering Chemistry through practice questions and MCQs not only enhances your understanding but also boosts your confidence for the exam. Engaging with objective questions helps identify important concepts and improves your problem-solving skills, making it easier to score better in your exams.
What You Will Practise Here
Basic concepts of Chemistry: Atoms, Molecules, and Stoichiometry
Periodic Table: Trends and properties of elements
Chemical Bonding: Types of bonds and molecular geometry
Thermodynamics: Laws and applications in chemical reactions
Equilibrium: Concepts of chemical and ionic equilibrium
Organic Chemistry: Functional groups and reaction mechanisms
Environmental Chemistry: Impact of chemicals on the environment
Exam Relevance
Chemistry is a vital component in various examinations such as CBSE, State Boards, NEET, and JEE. In these exams, questions often focus on conceptual understanding and application of theories. Common patterns include multiple-choice questions that test your knowledge of definitions, formulas, and the ability to solve numerical problems. Familiarity with these patterns through practice can significantly enhance your performance.
Common Mistakes Students Make
Misunderstanding the periodic trends and their implications
Confusing different types of chemical bonds and their properties
Overlooking the significance of units in thermodynamic calculations
Neglecting to balance chemical equations correctly
Struggling with organic reaction mechanisms due to lack of practice
FAQs
Question: What are the best ways to prepare for Chemistry (MHT-CET) MCQs? Answer: Regular practice of MCQs, understanding key concepts, and revising important formulas are essential for effective preparation.
Question: How can I improve my speed in solving Chemistry objective questions? Answer: Time yourself while practicing and focus on solving questions efficiently to improve your speed.
Don't wait any longer! Start solving practice MCQs today to test your understanding and solidify your knowledge in Chemistry. Your success in the MHT-CET exam is just a few practice questions away!
Q. For a reaction with a rate constant of 0.02 M⁻¹s⁻¹ and initial concentration of 0.5 M, what is the time taken to reach 0.25 M in a second-order reaction? (2023)
A.
25 s
B.
50 s
C.
10 s
D.
20 s
Solution
Using t = 1 / (k[A₀]) * (1/[A] - 1/[A₀]), t = 1 / (0.02 * 0.5) * (1/0.25 - 1/0.5) = 25 s.
Q. For the exothermic reaction A + B ⇌ C + heat, what will happen if the temperature is increased? (2020)
A.
Equilibrium will shift to the right
B.
Equilibrium will shift to the left
C.
No change in equilibrium
D.
Equilibrium will shift to the center
Solution
For an exothermic reaction, increasing the temperature shifts the equilibrium to the left, favoring the reactants, as the system tries to absorb the added heat.
Correct Answer:
B
— Equilibrium will shift to the left
Q. For the exothermic reaction: N2(g) + 3H2(g) ⇌ 2NH3(g), what will happen if the temperature is increased? (2023)
A.
The equilibrium will shift to the right
B.
The equilibrium will shift to the left
C.
No change in equilibrium
D.
The reaction will stop
Solution
According to Le Chatelier's principle, increasing the temperature of an exothermic reaction shifts the equilibrium to the left, favoring the reactants.
Correct Answer:
B
— The equilibrium will shift to the left
Q. For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), what happens to the equilibrium if the volume of the container is decreased? (2022)
A.
Equilibrium shifts to the left
B.
Equilibrium shifts to the right
C.
No effect on equilibrium
D.
Equilibrium constant changes
Solution
Decreasing the volume increases the pressure, and according to Le Chatelier's principle, the equilibrium will shift towards the side with fewer moles of gas, which is the right side (2 moles of SO3).
Correct Answer:
B
— Equilibrium shifts to the right
Q. For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), what happens to the equilibrium position if SO3 is removed from the system? (2023)
A.
The equilibrium shifts to the left
B.
The equilibrium shifts to the right
C.
The equilibrium remains unchanged
D.
The reaction stops
Solution
Removing SO3 will decrease its concentration, causing the system to shift to the right to produce more SO3 in order to re-establish equilibrium, according to Le Chatelier's principle.
Correct Answer:
B
— The equilibrium shifts to the right
Q. For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), what will happen if the volume of the container is increased? (2020) 2020
A.
Equilibrium shifts to the right
B.
Equilibrium shifts to the left
C.
No change in equilibrium
D.
Reaction stops
Solution
Increasing the volume decreases the pressure, and according to Le Chatelier's principle, the equilibrium will shift to the side with more moles of gas, which is the left side in this case.
Correct Answer:
B
— Equilibrium shifts to the left
Q. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens to the equilibrium if the volume of the container is decreased? (2020)
A.
Equilibrium shifts to the right
B.
Equilibrium shifts to the left
C.
No change in equilibrium
D.
Equilibrium shifts to the side with more moles
Solution
Decreasing the volume increases the pressure, and according to Le Chatelier's principle, the equilibrium will shift to the side with fewer moles of gas, which is the right side in this case.
Correct Answer:
A
— Equilibrium shifts to the right
Q. For the reaction: 2SO2(g) + O2(g) ⇌ 2SO3(g), what happens to the equilibrium position if the volume of the container is decreased? (2020)
A.
Shifts to the left
B.
Shifts to the right
C.
No change
D.
Depends on temperature
Solution
Decreasing the volume increases the pressure, and according to Le Chatelier's principle, the equilibrium will shift towards the side with fewer moles of gas, which is the right side in this case.
Q. For the reaction: 2SO2(g) + O2(g) ⇌ 2SO3(g), what will happen if the volume of the container is increased? (2020)
A.
Equilibrium shifts to the right
B.
Equilibrium shifts to the left
C.
No change in equilibrium
D.
Equilibrium shifts to the center
Solution
Increasing the volume decreases the pressure, and according to Le Chatelier's principle, the equilibrium will shift to the side with more moles of gas, which is the left side in this case.
Correct Answer:
B
— Equilibrium shifts to the left
Q. For the reaction: A(g) + B(g) ⇌ C(g) + D(g), if the volume of the container is decreased, what will be the effect on the equilibrium? (2023)
A.
Shift to the left
B.
Shift to the right
C.
No effect
D.
Increase the concentration of A
Solution
Decreasing the volume increases the pressure. According to Le Chatelier's principle, the equilibrium will shift towards the side with fewer moles of gas. If there are more moles of gas on the left side, the equilibrium will shift to the left.
