Match List-I with List-II and select the correct answer using the code given below the lists: List - I (Name) List - II (Formula) Code:A. Bleaching powder 1. NaHCO 3 B. Baking soda 2. Na 2CO 3. 10H 2O C. Washing soda 3. Ca(OH) 2 D. Slaked lime 4. CaOCl 2
A-4, B-1, C-2, D-3
Matching Chemical Names with Formulas: A Detailed Explanation
This solution explains the matching of common chemical names provided in List-I with their corresponding chemical formulas in List-II. Understanding these chemical identities is crucial in chemistry.
Understanding the Components of List-I and List-II
Let's break down each item from both lists to establish the correct matches:
- List-I (Names): Contains common chemical substances.
- List-II (Formulas): Contains the chemical formulas representing these substances.
Step-by-Step Matching Process
1. Bleaching Powder (A)
Bleaching powder is commonly used for disinfection and bleaching. Its chemical composition is primarily Calcium Oxychloride.
The chemical formula for Bleaching powder is CaOCl2.
Therefore, Bleaching powder (A) matches with formula CaOCl2 (4).
2. Baking Soda (B)
Baking soda, also known as bicarbonate of soda, is a common ingredient in baking and cleaning.
Its chemical name is Sodium Bicarbonate, and its formula is NaHCO3.
Thus, Baking soda (B) matches with formula NaHCO3 (1).
3. Washing Soda (C)
Washing soda, used in laundry and cleaning, is the hydrated form of Sodium Carbonate.
Its chemical name is Sodium Carbonate decahydrate, represented by the formula Na2CO3.10H2O.
Consequently, Washing soda (C) matches with formula Na2CO3.10H2O (2).
4. Slaked Lime (D)
Slaked lime is produced by adding water to quicklime (Calcium Oxide).
It is chemically known as Calcium Hydroxide, with the formula Ca(OH)2.
Hence, Slaked lime (D) matches with formula Ca(OH)2 (3).
Summary of Matches
The correct pairings between List-I and List-II are:
- A: Bleaching powder -
CaOCl2(4) - B: Baking soda -
NaHCO3(1) - C: Washing soda -
Na2CO3.10H2O(2) - D: Slaked lime -
Ca(OH)2(3)
Final Answer Selection
Based on the detailed matching process, the correct sequence is A-4, B-1, C-2, D-3. This corresponds to the first option provided.
| List - I (Name) | List - II (Formula) |
| A. Bleaching powder | 4. CaOCl2 |
| B. Baking soda | 1. NaHCO3 |
| C. Washing soda | 2. Na2CO3.10H2O |
| D. Slaked lime | 3. Ca(OH)2 |
The combination that correctly matches all items is A-4, B-1, C-2, D-3.
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केल्विन पैमाने पर जल का हिमांक कितना होता है?
