Match the LIST-I with LIST-II
LIST-I (Disinfectant byproducts (DBPs) of Chlorine) LIST-II (Chemical Composition) A. Dibromochloromethane I. CHBr2Cl B. Bromoform II. CHCl3 C. Bromodichloromethane III. CHBrCl2 D. Chloro form IV. CHBr3
Choose the correct answer from the options given below:
Understanding Chlorine Disinfectant Byproducts (DBPs)
This question requires matching specific Disinfectant Byproducts (DBPs) formed from chlorine disinfection in water treatment with their corresponding chemical compositions. DBPs are compounds formed when disinfectants like chlorine react with organic matter present in water.
Matching Lists: DBPs and Chemical Formulas
Let's break down the matching process based on the provided lists. We will refer to the items in LIST-I by their letters (A, B, C, D) and the items in LIST-II by their Roman numerals (I, II, III, IV).
| LIST-I (Disinfectant byproducts (DBPs) of Chlorine) | LIST-II (Chemical Composition) |
|---|---|
| A. Dibromochloromethane | I. $CHBr_2Cl$ |
| B. Bromoform | II. $CHCl_3$ |
| C. Bromodichloromethane | III. $CHBrCl_2$ |
| D. Chloroform | IV. $CHBr_3$ |
Analyzing Matches for Each DBP
A Dibromochloromethane Match Analysis
Item A is Dibromochloromethane. According to the correct answer pairing, Dibromochloromethane (A) is matched with option III, which represents the chemical formula '$CHBrCl_2$'. This formula indicates a molecule containing one carbon atom, one bromine atom, and two chlorine atoms.
B Bromoform Match Analysis
Item B is Bromoform. The correct answer indicates that Bromoform (B) matches with option IV, the chemical formula '$CHBr_3$'. This formula signifies a molecule composed of one carbon atom and three bromine atoms.
C Bromodichloromethane Match Analysis
Item C is Bromodichloromethane. Following the provided correct answer, Bromodichloromethane (C) is matched with option I, representing the chemical formula '$CHBr_2Cl$'. This chemical composition contains one carbon atom, two bromine atoms, and one chlorine atom.
D Chloroform Match Analysis
Item D is Chloroform. The correct answer pairs Chloroform (D) with option II, the chemical formula '$CHCl_3$'. This formula denotes a molecule consisting of one carbon atom and three chlorine atoms.
Finalizing the Correct Option
Based on the individual matches derived:
- A matches with III
- B matches with IV
- C matches with I
- D matches with II
This combination corresponds to the option A-III, B-IV, C-I, D-II.
Important Questions from Water Treatment
- Choose the correct statements about coagulation process.
A. Coagulation makes smaller colloids to adhere to each other to form large floc particles
B. Colloids are continually involved in Brownian moment.
C. Colloids are stable because of their surface charge.
D. Coagulants are preferably trivalent cations.
E. Coagulants are soluble in neutral pH.
Choose the most appropriate answer from the options given below: - Hardness of water is due to the presence of
- Which of the following is used as a coagulant for removal of phosphates in water ?
- Given the following parameters of a primary settling chamber :
Diameter = 50m, Depth = 2.5m, average detention time = 2 hours.
How much quantity of waste water is being treated ? - Calculate hardness in units of mg/l as CaCO$_3$ of a ground water sample having Ca$^{++}$ ion concentration of 100 mg/l.
