Spontaneity
4 previous year questions.
High-Yield Trend
Chapter Questions 4 MCQs
Given are two statements one is labelled as Assertion A and other is labelled as Reason R.
Assertion A : Magnesium can reduce Al2O3 at a temperature below 1350°C, while above 1350°C aluminium can reduce MgO.
Reason R : The melting and boiling points of magnesium are lower than those of aluminium.
In light of the above statements, choose the most appropriate answer from the options given below :
Match List I with List II
| List I | List II | ||
| A | Physisorption | i | Single Layer Adsorption |
| B | Chemisorption | ii | 20−40kJmol−1 |
| C | N2(g)+3H2(g)—⇢Fe(s)—⇢2NH3(g) | iii | Chromatography |
| D | Analytical Application or Adsorption | iv | Heterogeneous catalysis |
Choose the correct answer from the options given below:
| Process | ΔH/kJmol−1 | ΔS/JK−1 |
| A | -25 | -80 |
| B | -22 | 40 |
| C | 25 | -50 |
| D | 22 | 20 |
The number of non-spontaneous processes from the following is
About Spontaneity - JEE-MAIN
Spontaneity is a vital chapter for JEE-MAIN aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Spontaneity PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Spontaneity carry the most weight. Then, tackle the questions iteratively to solidify your understanding.