Match List I with List II:
List I:
A. Coke
B. Diamond
C. Fullerene
D. Graphite
List II:
1. Carbon atoms are sp³ hybridised
2. Used as a dry lubricant
3. Used as a reducing agent
4. Cage like molecules
Choose the correct answer from the options given below:
(A) A-4, B-1, C-2, D-3
(B) A-3, B-1, C-4, D-2
(C) A-3, B-4, C-1, D-2
(D) A-2, B-4, C-1, D-3
Answer (2)
To solve this question, we need to match substances from List I with their correct descriptions from List II based on the properties and uses of carbon allotropes.
List I: A. Coke B. Diamond C. Fullerene D. Graphite
List II:
Carbon atoms are sp³ hybridized
Used as a dry lubricant
Used as a reducing agent
Cage-like molecules
Let's look at each item from List I and determine its correct match from List II:
Coke (A): Coke is a carbon-rich solid material derived from destructive distillation of coal or petroleum and is commonly used in metallurgy. It is well known for being a reducing agent in the process of steel making. Thus, it matches with 3. Used as a reducing agent .
Diamond (B): In diamond, each carbon atom forms four single covalent bonds with other carbon atoms in a tetrahedral arrangement. This structure is an example of sp³ hybridization . Therefore, it matches with 1. Carbon atoms are sp³ hybridized .
Fullerene (C): Fullerenes are a form of carbon arranged in a hollow sphere, ellipsoid, or tube, and are often referred to as 'buckyballs' due to their cage-like structure. Therefore, fullerenes match with 4. Cage-like molecules .
Graphite (D): Graphite has a layered structure where sheets of carbon atoms are arranged in a hexagonal lattice and can slide over each other easily, which makes it an excellent dry lubricant . Hence, it matches with 2. Used as a dry lubricant .
Thus, the correct matching for the given lists is:
(B) A-3, B-1, C-4, D-2
This solution involves understanding the distinct structural and functional characteristics of various carbon allotropes, which explains how each item is connected to its crucial applications or properties.
The correct matching of substances from List I to descriptions in List II is: A-3 (Coke - Used as a reducing agent), B-1 (Diamond - Carbon atoms are sp³ hybridized), C-4 (Fullerene - Cage-like molecules), D-2 (Graphite - Used as a dry lubricant). The chosen answer option is (B).
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