Q. What is the effect of increasing the number of gas molecules in a container at constant volume?
A.
Pressure decreases
B.
Pressure increases
C.
Temperature decreases
D.
Volume increases
Solution
Increasing the number of gas molecules in a container at constant volume increases the frequency of collisions with the walls, thus increasing pressure.
Q. What is the effect of increasing the oxidation state of a transition metal on its ability to act as a Lewis acid?
A.
Increases
B.
Decreases
C.
No effect
D.
Varies unpredictably
Solution
Increasing the oxidation state of a transition metal generally increases its ability to act as a Lewis acid due to a higher positive charge attracting electron pairs more strongly.
Q. What is the effect of increasing the temperature on the rate of a chemical reaction?
A.
Decreases the rate
B.
Increases the rate
C.
No effect
D.
Depends on the reaction
Solution
Increasing temperature generally increases the kinetic energy of molecules, leading to more frequent and effective collisions, thus increasing the reaction rate.
Q. What is the effect of temperature on physisorption?
A.
Increases with temperature
B.
Decreases with temperature
C.
No effect
D.
Depends on the adsorbate
Solution
Physisorption typically decreases with increasing temperature because the kinetic energy of the molecules increases, overcoming the weak van der Waals forces.
Q. What is the effect of temperature on the rate of a chemical reaction?
A.
It decreases the rate
B.
It has no effect
C.
It increases the rate
D.
It can either increase or decrease the rate
Solution
According to the Arrhenius equation, an increase in temperature generally increases the kinetic energy of molecules, leading to a higher reaction rate.
The Chemistry (School & UG) category covers the fundamental to advanced concepts of Chemistry, structured to support Class 11–12 students, competitive exam aspirants, and undergraduate learners. The content emphasizes conceptual clarity, problem-solving skills, and strong alignment with NCERT and university syllabi.
In this category, you will study:
Physical Chemistry – atomic structure, thermodynamics, chemical kinetics, equilibrium, electrochemistry, and solutions
Inorganic Chemistry – periodic trends, chemical bonding, coordination compounds, metallurgy, and s-, p-, d-, and f-block elements
Numerical problem-solving – formula-based calculations, mole concept, and graph-based questions
Reaction mechanisms and derivations with step-by-step explanations
Comparisons, trends, and exceptions important for exams
NCERT-based theory, supported by diagrams, tables, MCQs, assertion–reason questions, numericals, and PYQs
The content is designed to build strong foundations, improve analytical and quantitative skills, and prepare students for school examinations, competitive exams, and undergraduate assessments.
Develop a clear, logical, and application-oriented understanding of Chemistry to excel academically and confidently tackle problem-based and conceptual questions at both school and UG levels.
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