Match the items of Column I with the applications given in Column IIColumnI ColumnII a. Zeolite i. Solar cell b. Indium tin oxide ii. CO2 capture c. LiCoO2 iii. Fuel cell d. Pt alloy iv. Battery
a – ii; b – i; c – iv; d – iii
Let's match the substances in Column I with their common applications listed in Column II. Understanding the properties of each substance helps in identifying its primary use.
Zeolite Application
Zeolites are porous materials with a cage-like structure. Their unique structure and surface properties make them excellent adsorbents and catalysts. They are widely used in various applications, including separation processes. One significant application is the capture of carbon dioxide (\(\text{CO}_2\)) from gas mixtures, making them relevant for environmental applications and industrial gas separation.
- Zeolite is commonly used for adsorption and separation.
- A key application is \(\text{CO}_2\) capture.
- Thus, Zeolite (a) matches with \(\text{CO}_2\) capture (ii).
Indium Tin Oxide Application
Indium Tin Oxide (ITO) is a transparent conductive oxide. This means it is electrically conductive while also being transparent to visible light. This combination of properties is crucial for various optoelectronic applications. A major use of ITO is in electrodes for displays and photovoltaic devices.
- ITO is transparent and conductive.
- It is used as a transparent electrode.
- This property makes it essential for devices like solar cells and touch screens.
- Thus, Indium tin oxide (b) matches with Solar cell (i).
LiCoO2 Application
\(\text{LiCoO}_2\) (Lithium Cobalt Oxide) is a well-known compound used as a cathode material in rechargeable lithium-ion batteries. Its layered structure allows for reversible insertion and extraction of lithium ions, which is the fundamental principle behind the operation of these batteries.
- \(\text{LiCoO}_2\) is a cathode material.
- It is widely used in lithium-ion batteries.
- Thus, \(\text{LiCoO}_2\) (c) matches with Battery (iv).
Pt Alloy Application
Pt alloys (Platinum alloys) are mixtures of platinum with other metals. Platinum and its alloys are renowned for their excellent catalytic properties, high stability, and resistance to corrosion. They are extensively used as catalysts in various chemical reactions, including those involved in energy conversion devices.
- Platinum and its alloys are excellent catalysts.
- They are particularly important in electrochemical reactions.
- A significant application is in fuel cells, where they catalyze the reactions that produce electricity.
- Thus, Pt alloy (d) matches with Fuel cell (iii).
Summary of Matches
Based on the above analysis, the correct matches are:
| Column I (Substance) | Column II (Application) | Match |
|---|---|---|
| a. Zeolite | ii. \(\text{CO}_2\) capture | a – ii |
| b. Indium tin oxide | i. Solar cell | b – i |
| c. \(\text{LiCoO}_2\) | iv. Battery | c – iv |
| d. Pt alloy | iii. Fuel cell | d – iii |
This matching corresponds to the option: a – ii; b – i; c – iv; d – iii.
Important Questions from Main Group Elements and Their Compounds
- __________ nitrides are termed by transition + inner transition metals.
- A non-metal ‘X’ occurs in nature in free state. It combines with hydrogen to form a gas, which is colourless and highly toxic. Apart from this, ‘X’ is oxidized to ‘$\text{XO}_2$’ which is a colourless, pungent and irritating gas. ‘X’ represents :
For the following reaction sequence,
X and Y, respectively, areThe reaction of $PCl_3$ with $PhLi$ in 1:3 molar ratio yields X as one of the products, which on further treatment with $CH_3I$ gives Y. The reaction of Y with $n-BuLi$ gives product Z. The products X, Y and Z, respectively, are
- Conversion of boron trifluoride to tetrafluoroborate accompanies
