The correct statements about Zeolites are:
1. They are good shape selective catalysts
2. They contain Al-O-Si framework
3. They are not found in nature
4. They are used as catalysts for cracking hydrocarbons in the petrochemical industry.
The correct statements about Zeolites are:
1. They are good shape selective catalysts
2. They contain Al-O-Si framework
3. They are not found in nature
4. They are used as catalysts for cracking hydrocarbons in the petrochemical industry.
Show Hint
I & II only
II & III only
I, II & IV only
I, II, III & IV
The Correct Option is C
Approach Solution - 1
Statement II: Correct. Zeolites have a three-dimensional Al-O-Si framework with well-defined pores and cavities.
Statement III: Incorrect. Zeolites \textit{are} found in nature (e.g., volcanic rocks) and can also be synthesized artificially.
Statement IV: Correct. Zeolites (especially ZSM-5) are extensively used in petroleum refining for catalytic cracking of hydrocarbons.
Thus, the correct combination is I, II, and IV only, making option (3) correct.
Approach Solution -2
Step 1: Understand the structure of Zeolites.
Zeolites are crystalline aluminosilicates composed of a three-dimensional framework of \(\text{Al-O-Si}\) tetrahedra.
This framework creates pores and cavities, giving zeolites their unique properties.
Step 2: Analyze the given statements.
1. Zeolites are good shape selective catalysts.
- Correct. Their porous structure allows selective catalysis based on molecular size.
2. They contain Al-O-Si framework.
- Correct. The fundamental structure of zeolites is an aluminosilicate framework.
3. They are not found in nature.
- Incorrect. Zeolites occur naturally as minerals, though synthetic versions are also widely used.
4. They are used as catalysts for cracking hydrocarbons in the petrochemical industry.
- Correct. Zeolites are extensively used as catalysts in fluid catalytic cracking due to their acidity and shape selectivity.
Step 3: Conclusion.
The correct statements are I, II & IV only.
Top Questions on Metallurgy
- In LD process, silicon removal takes place before carbon removal since:
Match the following processes with their physical principles:
- Back Scattered electrons are used in:
- Which of the following is a common defect in wire drawing processes, particularly when excessive friction is present at the die-workpiece interface?
- What is the relationship between the frequency of the sound waves and the ability to detect smaller defects in Ultrasonic testing?
Questions Asked in AP EAPCET exam
- The number of all five-letter words (with or without meaning) having at least one repeated letter that can be formed by using the letters of the word INCONVENIENCE is:
- AP EAPCET - 2025
- Binomial Expansion
- If \(\alpha, \beta, \gamma\) are the roots of the equation \[ x^3 - 13x^2 + kx + 189 = 0 \] such that \(\beta - \gamma = 2\), then find the ratio \(\beta + \gamma : k + \alpha\).
- In a container of volume 16.62 m$^3$ at 0°C temperature, 2 moles of oxygen, 5 moles of nitrogen and 3 moles of hydrogen are present, then the pressure in the container is (Universal gas constant = 8.31 J/mol K)
- AP EAPCET - 2025
- Ideal gas equation
- If \[ A = \begin{bmatrix} x & 2 & 1 \\ -2 & y & 0 \\ 2 & 0 & -1 \end{bmatrix}, \] where \( x \) and \( y \) are non-zero real numbers, trace of \( A = 0 \), and determinant of \( A = -6 \), then the minor of the element 1 of \( A \) is:}
- AP EAPCET - 2025
- Complex numbers
- Two objects of masses 5 kg and 10 kg are placed 2 meters apart. What is the gravitational force between them?
(Use \(G = 6.67 \times 10^{-11}\, \mathrm{Nm^2/kg^2}\))- AP EAPCET - 2025
- Gravitation