Description : Permanent hardness of water can be removed by (A) Adding alum (B) Adding lime (C) Adding chlorine (D) Zeolite process
Last Answer : (D) Zeolite process
Description : Mostly used coagulant, is (A) Chlorine (B) Alum (C) Lime (D) Bleaching powder
Last Answer : (B) Alum
Description : Alum is a (A) Coagulant (B) Flocculent (C) Catalyst (D) Disinfectant
Last Answer : (A) Coagulant
Description : A gas used as a disinfectant in drinking water is - (1) Hydrogen (2) Oxygen (3) Fluorine (4) Chlorine
Last Answer : (4) Chlorine Explanation: Water chlorination is the process of adding chlorine or chlorine compounds such as sodium hypochlorite to water.
Description : The temporary hardness of water can be removed by (A) Boiling (B) Adding lime (C) Adding alum (D) Filtration
Last Answer : (A) Boiling
Description : For controlling algae, the most commonly used chemical, is (A) Copper sulphate (B) Alum (C) Lime (D) Bleaching powder
Last Answer : (A) Copper sulphate
Description : To control the growth of algae in reservoirs, the compound which is used, is (A) Bleaching powder (B) Copper sulphate (C) Lime solution (D) Alum solution
Last Answer : (B) Copper sulphate
Description : Which of the following is the most widely used disinfectant in water treatment? (A) Chlorine (B) Irradiation of water by ultraviolet light (C) Cation exchanger (D) Coagulation
Last Answer : (A) Chlorine
Description : The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? (A) Chlorine (B) Alkalis (C) Benzene hexachloride (D) Alkyl benzene sulphonate (ABS)
Description : common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganat
Last Answer : Option D
Description : A common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganate
Description : Which disinfectant cannot be used in drinking water?
Last Answer : Which disinfectant cannot be used in drinking water? A. Chlorine B. Ozone C. Chloramine D. Phenyl
Description : Bleaching powder is used in drinking water as a/an – (1) disinfectant (2) antibiotic (3) antiseptic (4) coagulant
Last Answer : (1) disinfectant Explanation: Bleach refers to a number of chemicals which remove colour, whiten or disinfect, often via oxidation. Bleaches are used as household chemicals to whiten clothes and ... to control bacteria, viruses and algae and in any institution where sterile conditions are needed.
Description : Bleaching powder is used in drinking water as a/an (1) disinfectant (2) antibiotic (3) antiseptic (4) coagulant
Last Answer : disinfectant
Description : Permanent - hardness of water may be removed by addition of – (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante
Last Answer : (2) Sodium carbonate Explanation: Sodium carbonate (also known as washing soda or soda ash) is a sodium salt of carbonic acid. In domestic use, it is used as a water softener in laundering. It ... with the detergent being used. Sodium carbonate can be used to remove grease, oil and wine stains.
Description : The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine
Description : Which is the most widely used coagulant for the treatment of turbid water? (A) Alum (aluminium sulphate) (B) Lime (C) Ferric chloride (D) Sodium aluminate
Last Answer : (A) Alum (aluminium sulphate)
Description : Most widely and commonly used coagulant for the removal of suspended impurities in water is (A) Bleaching powder (B) Slaked lime (C) Alum (D) Copper sulphate
Last Answer : (C) Alum
Description : Temporary hardness of water can be removed by (A) Addition of alum (a coagulant) (B) Boiling (C) Filtration (through gravity sand filter) (D) Addition of lime
Last Answer : (B) Boiling
Description : Permanent – hardness of water may be removed by addition of (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante
Last Answer : Sodium carbonate
Description : The most widely used coagulant for removing suspended impurities from water is (A) Bleaching powder (B) Chlorine (C) Calcium sulphate (D) Alum
Last Answer : (D) Alum
Description : If water smells bad, then that odour can be removed by adding – (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen
Last Answer : (3) activated carbon Explanation: Adding powdered activated carbon to water or using of granular activated carbon (GAC) in the water filter can remove bad taste and foul odour. Powdered activated ... the activated carbon and retained, but the material doing the adsorption does not change size.
Description : If water smells bad, then that odour can be removed by adding - (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen
Last Answer : (3) activated carbon Explanation: Adding powdered activated carbon to water or using of granular activated carbon (GAC) in the water filter can remove bad taste and foulodor.
Description : If water smells bad, then that odour can be removed by adding (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen
Last Answer : activated carbon
Description : According to Bernoulli's equation for steady ideal fluid flow (A) Principle of conservation of mass holds (B) Velocity and pressure are inversely proportional (C) Total energy is constant throughout (D) The energy is constant along a streamline but may vary across streamlines
Last Answer : Answer: Option D
Description : Lime water reacts with chlorine to give a) bleaching powder b) baking powder c) baking soda d) washing soda
Last Answer : a) bleaching powder
Description : What's your trick for drinking more water throughout the day?
Last Answer : answer:No trick. I walk to the sink with my cup and fill it. Drinking water is just a routine to get into. it is self-discipline, pure and simple. Just do it. (I know one guy that – every time he goes to the bathroom to pee, also goes and gets a new cup of water. Easy in, easy out.
Description : Bleaching powder is prepared by passing – (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne
Last Answer : (1) Chlorine over slaked lime Explanation: Calcium hypochlorite (bleaching powder) is manufactured by the calcium process: 2Cl2 + 2Ca(OH)2 (slaked lime) Ca(OCl)2 + CaCl2 + 2H2O. Bleaching powder is actually a mixture of calcium hypochlorite and the basic chloride with some slaked lime.
Description : Bleaching powder is made from - (1) Sulphur dioxide and gypsum (2) Chlorine and Charcoal (3) Soda ash and lime (4) Lime and Chlorine
Last Answer : (4) Lime and Chlorine Explanation: The gas which is used in the preparation of bleaching powder is chlorine. It is a mixture of lime and calcium chloride.
Description : Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on (A) Slaked lime (B) Soda lime (C) Calcium perchlorate (D) None of these
Last Answer : (A) Slaked lime
Description : The most commonly used substance to speed up the sedimentation of sewage is (A) Lime (B) Sulphuric acid (C) Chlorine (D) Sodium bisulphite
Last Answer : (A) Lime
Description : How milk of lime reacts with chlorine?
Last Answer : Milk of lime reacts with chlorine to form hypochlorite, a constituent of bleaching powder.
Description : Bleaching powder is prepared by passing : (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne
Last Answer : Chlorine over slaked lime
Description : Alum is chemically (A) Copper sulphate (B) Aluminium sulphate (C) Ferrous sulphate (D) Ferric sulphate
Last Answer : (B) Aluminium sulphate
Description : I would like to know if there is anyone else out there who evaporates their tap water of chlorine for drinking purposes?
Last Answer : answer:I've recently been looking into the effects of chlorinated tap water on vegetable plants. One interesting point I found was that the typically mentioned 24 hour period to evaporate the chlorine was a ... the air-at least not at my house. Maybe putting the container in the oven would help.
Description : I've been noticing a stong smell of chlorine in my drinking water (Seattle) and wonder how to get it out?
Last Answer : A good water filter (such as brita) will remove most of it with activated charcoal. Leaving the water sitting out will also let the chlorine dissipate.
Description : For steady ideal fluid flow, the Bernoulli's equation states that the (A) Velocity is constant along a stream line (B) Energy is constant throughout the fluid (C) Energy is constant along a stream line, but may vary across stream lines (D) None of these
Last Answer : (C) Energy is constant along a stream line, but may vary across stream lines
Description : In an ideal mixed reactor (at steady state), the (A) Space time is equivalent to holding time for constant density systems (B) Composition throughout the reactor remains same (C) Exit stream has the same composition as the fluid within the reactor (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Ultraviolet rays can be used in water treatment as – (1) Flocculator (2) Precipitator (3) Hydrolyser (4) Disinfectant
Last Answer : (4) Disinfectant Explanation: UV radiation can be an effective viricide and bactericide. Disinfection using UV radiation is commonly used in wastewater treatment applications and is finding an increased usage in drinking water treatment.
Description : Which element is used as a disinfectant; as a bleaching agent and to purify water?
Last Answer : Chlorine
Description : Main use of hydrazine is (A) As a rocket fuel (B) In water treatment (C) As a disinfectant (D) As fire retardant
Last Answer : (A) As a rocket fuel
Description : Ultraviolet rays can be used in water treatment as (1) Flocculator (2) Precipitator (3) Hydrolyser (4) Disinfectant
Last Answer : Disinfectant
Description : What is disinfectant ?
Last Answer : Chemicals that destroy harmful germs when used on inert matter are called disinfectants. It is harmful to human body tissues. This is why it is used to disinfect inert matter. For example, fennel is used as disinfectant to disinfect sewers , floors , bathrooms, etc.
Last Answer : Autoclave On the machine 121 degrees At temperature Disinfectant To do Is.
Description : Are Spores harmed by disinfectant heat or cold?
Last Answer : Yes, potentially all 3 could harm spores.
Description : Why would bacteria not grow on an agar plate treated with a disinfectant?
Last Answer : What is the answer ?
Description : A dark purple compound used as an antiseptic and disinfectant is (a) Potassium nitrate (b) Sodium thiosulphate (c) Potassium permanganate (d) Calcium phosphate
Last Answer : Ans:(c)
Description : Penicillin is widely used as – (1) an antiseptic (2) a disinfectant (3) an antibiotic (4) an insecticide
Last Answer : (3) an antibiotic Explanation: Penicillin V is an antibiotic in the penicillin group of drugs. It fights bacteria in your body.
Description : KMnO4 can be used as a/an - (1) insecticide (2) fertiliser (3) pesticide (4) disinfectant
Last Answer : (4) disinfectant Explanation: Potassium permanganate is an inorganic chemical compound with the formula KMnO4. As an oxidant, potassium permanganate can act as an antiseptic. For example, dilute solutions ... infections of the hands or feet. It is used extensively in the water treatment industry.