Description : One of the methods of purification of leach liquor is ion exchange, which involves (A) Exchange between two liquid phases (B) Exchange between a gaseous phase and a liquid phase (C) Exchange between a liquid phase and an organic resin phase (D) Exchange between a solid phase and a gas phase
Last Answer : (C) Exchange between a liquid phase and an organic resin phase
Description : How can you help in reducing the problem of waste disposal? Give any two methods? -Biology
Last Answer : By changing our lifestyle and change in attitude will reduce disposable waste. Reducing packaging. Recycling of waste. Preparing compost of biodegradable waste.
Description : How can you help in reducing the problem of waste disposal ? Give any two methods. -Biology
Last Answer : (i) Recycling : The solid wastes like paper, plastics and metals, etc. are recycled. (ii) Preparation of Compost: Biodegradable domestic wastes such as left over food, fruit and vegetable peels and leaves of potted plants, etc. can be converted into compost by burying in a pit dug into ground.
Description : State the types of radioactive waste generated in a nuclear power station. Explain the methods employed for their disposal.
Last Answer : Types of radioactive waste: The waste produced in nuclear power plant is in the form of solid, liquid & gases, 1. Solid Waste Disposal:- Solid wastes removed from the reactor are very ... are measured. If it is safe then released to atmosphere at high level through large height chimney.
Description : The sources of sulphur dioxide may be: 1. burning of coal 2. solid municipality waste disposal 3. burning of diesel 4. volcanoes The correct sources are: (a) 1, 2 and 4 only (b) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only
Last Answer : Ans:(b)
Description : The main source of carbon monoxide is (1) Industrial process (2) Fuel combustion (3) Transportation (4) Solid waste disposal
Last Answer : (3) Transportation Explanation: The main source of carbon monoxide is burning of fossil fuel
Description : The least preferred technique in the disposal of Municipal Solid Waste is - (1) Incineration (2) Composting (3) Land filling (4) Bricketting
Last Answer : (4) Bricketting Explanation: Some of the methods of solid waste disposal and management are : Open burning Dumping into the sea Sanitary Landfills Incineration Composting Ploughing in fields Hog feeding ... waste into fuel pellets or briquettes is the least preferred method of solid waste disposal.
Description : The least preferred technique in the disposal of Municipal Solid Waste is (1) Incineration (2) Composting (3) Land filling (4) Bricketting
Last Answer : Bricketting
Last Answer : Transportation
Description : What are the methods of treatment & disposal of radioactive wastes? (A) Evaporation & chemical precipitation (B) Biological methods & adsorption in ion exchange materials (C) Fixing into a solid mass with cement and sinking deep in the sea (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Which substance is found in nature in solid , liquid , gaseous state ?
Last Answer : Water is hard , liquid , gaseous in nature.
Description : What is the common names for solid liquid and gaseous states of water?
Last Answer : solid = iceliquid = watergaseous = water vapour
Description : Most substances are more dense in their solid form than in their liquid or gaseous form. What makes the solid phase more dense?
Last Answer : Solid has more energy
Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) boiling point (b) melting point (c) triple point (d) freezing point
Last Answer : Ans:(c)
Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) Boiling point (b) Melting point (c) Triple point (d) Freezing point
Description : The direction of heat flow between two objects depends on - (1) Their masses (2) Their heat contents (3) Their temperatures (4) Whether they are in solid, liquid or gaseous state
Last Answer : (3) Their temperatures Explanation: Heat always flows from a body at higher temperature to a body at a lower temperature.
Description : Heat transfer rate to the charge/stock in a furnace does not depend upon the (A) Type of fuels viz. solid, liquid or gaseous (B) Flue gas temperature (C) Emissivity of refractory walls (D) Initial temperature of the charged stock
Last Answer : (A) Type of fuels viz. solid, liquid or gaseous
Description : Bomb calorimeter is used for the determination of calorific value of the __________ fuels. (A) Gaseous (B) Solid (C) Liquid (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : The optimum percentage of excess air for combustion depends upon the__________ of the fuel. (A) Type (solid, liquid or gaseous) (B) Calorific value (C) Sulphur content (D) Ignition temperature
Last Answer : (A) Type (solid, liquid or gaseous)
Description : Wobbe index' is a characteristic of (A) Solid fuels (B) Gaseous fuels (C) Liquid fuels (D) Fat coals
Last Answer : (B) Gaseous fuels
Description : In the context of the chemical process industries, the term BOD is normally associated with the (A) Characterisation of solid wastes (B) Organic concentration in gaseous effluents (C) Characterisation of liquid effluents (D) Characterisation of boiler feed water
Last Answer : (C) Characterisation of liquid effluents
Description : A stable interface between solid _________ liquid ____________ and gaseous ___________ promotes high rate of electrode processes. a) Fuel, electrolyte, electrode b) Electrode, fuel, electrolyte c) Electrode, electrolyte, fuel d) Fuel, electrode, electrolyte
Last Answer : c) Electrode, electrolyte, fuel
Description : What is the unique state at which solid, liquid and gaseous phase can go co-exist in equilibrium? a. Triple point b. Critical point c. Boiling point d. Pour point
Last Answer : Triple point
Description : Fuels that may classified conveniently in solid, liquid and gaseous. a. Unleaded fuel b. Diesel fuel c. Fossil fuel d. All of the above
Last Answer : Fossil fuel
Description : In which of the following form(s), the waster products are discharged into the biosphere? A. Gaseous B. Liquid C. Solid D. All of the above
Last Answer : D. All of the above
Description : ________ fuels produce least amount of harmful gases and do not leave behind solid residue on combustion. a) solid b)gaseous c)liquid d )semi-solid
Last Answer : b)gaseous
Description : What is waste disposal? -SST 10th
Last Answer : Waste disposal is the management of waste to prevent harm to the environment, injury or long term progressive damage to health. Disposal of waste is where the intention is to permanently store, the waste for the duration of its biological and chemical activity, such that it is rendered harmless.
Description : Give two reasons as to why there is a need for safe waste disposal. -Geography
Last Answer : 1. All type of waste pose a challenge to the environment. 2. Untreated waste materials discharged into stream cause depletion of aquatic life.
Description : What is the difference between waste disposal and waste management?
Last Answer : Waste management is collection, transportaion and reuse or recyle the waste whereas Waste disposal is simply to dispose off the waste somewhere.
Description : What is the difference between waste disposal and junk disposal?
Last Answer : the main difference between waste disposal and junk disposal is waste disposal is related to food waste or papers or plastic cans or home-based foods waste whereas junk disposal is related to the waste that may be of e-waste or electronic waste or any other mechanical wastes.
Description : What is the effects of improper waste disposal in students?
Last Answer : Need answer
Description : Proper Computer Waste Disposal?
Last Answer : Recycling of computers is tricky, because some state laws prohibit waste from electronics in landfills and some do not. Computer Monitors have a high concentration of lead of about 27%, and is considered ... reformat your hard drive to completely wipe it clean. Just deleting it to the recycle bin
Description : Where could I buy plastic bins for medical waste disposal?
Last Answer : Actually Amazon offers a complete line of containers for the medical industry. They also sell all types of accessories necessary as well. Plastic bins for medical waste disposal can be purchased online at Medicalartspress.com This company offeres many different sizes and types to choose from.
Description : What do they do at a Medical Waste Disposal plant?
Last Answer : Medical waste contains some infected material. A Medical Waste Disposal plant sterilizes medical waste before disposal to the normal city dump.
Description : Disposal of radioactive waste materials and spent fuel is a major and important technology. How the waste radioactive material is disposed off ?
Last Answer : Nonusable fission products are radioactive and take short/medium/long time for radioactive decay to reach safe level of radioactivity. Accordingly three methods of disposal are : (a) Zero or low ... are stored in water for several months to permit radioactive decay to an accepetable low level.
Description : Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is (A) H2 (B) CH4 (C) CO2 (D) N2
Last Answer : (B) CH4
Description : Which of the following is not a practical method of low level radioactive waste disposal? (A) Dilution with inert material (B) Discharging to atmosphere through tall stacks after dilution (C) Disposing off in rivers & oceans (D) Filling in steel crates and shooting it off out of earth's gravity
Last Answer : (D) Filling in steel crates and shooting it off out of earth's gravity
Description : Pick up the incorrect statement from the following. Intake of water supply should (A) Be nearer to the treatment plant (B) Receive water from purer zone of the source (C) Be located downstream of waste water disposal point (D) Remain easily accessible during floods
Last Answer : (C) Be located downstream of waste water disposal point
Description : The Nuclear Waste Policy Act of 1982 and amendments require what Federal agency to site, construct and operate a geologic repository for disposal of high-level nuclear waste?
Last Answer : ANSWER: U.S. DEPARTMENT OF ENERGY
Description : State the health hazards caused by improper disposal of e-waste.
Last Answer : Ans: When we dispose off e-waste improperly, hazardous chemicals like lead, cadmium, beryllium, mercury and brominated flame retardants pollute the air at a high risk. It also contaminates soil and ... and also genetic mutations. E-waste contains dangerous chemicals that may cause cancer as well.
Description : Explain the procedure adopted for the disposal of Nuclear Waste.
Last Answer : Following the procedure adopted for the disposal of Nuclear Waste: Nuclear waste disposal in nuclear power station: The waste produced in nuclear power plant is in the form of solid, liquid & ... . If it is safe then released to atmosphere at high level through large height chimney.
Description : Define gaseous waste. -SST 10th
Last Answer : It includes fuel exhausts containing carbon dioxide, nitrogen oxides, carbon monoxide, etc., and smog which is formed as a hazy mixture of gases when fuel exhaust reacts with sunlight.
Description : State the main objective of the treatment of gaseous waste. -SST 10th
Last Answer : The objectives of the treatment of gaseous waste is to drain the harmful particles and allow clean air to escape through chimneys.
Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid ... pressure at temperature above 430° C. (4) It is a thermo chemical decomposition of organic waste
Last Answer : (2) The process occurs at a temperature above 430°C at atmospheric pressure. Explanation: Pyrolysis is a thermo-chemical decomposition of organic material at elevated temperatures in the ... . Pyrolysis generally takes place well above atmospheric pressure at temperatures exceeding above 430 °C.
Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant ... high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste
Last Answer : The process occurs at a temperature above 430°C at atmospheric pressure.
Description : (i) What is understood by biodegradable waste ? (ii) State one source of gaseous waste. -Geography
Last Answer : (i) Biodegradable waste is a type of waste which can be broken down in a reasonable amount of time, into its base compounds by micro organisms and other living things regardless of what those ... CO2. Methane comes out from cattle shed. Swamps, coal mines etc. Volcanic erruptions gives out SO2.
Description : (i) State the main objective of the treatment of gaseous waste. -Geography
Last Answer : (i) Objectives of the treatment of gaseous waste is to drain the harmful particles and allow clean air to escape through chimneys. (ii) Two deseases of gaseous pollution are lung cancer and asthma.
Description : Describe different methods of gaseous exchange in plants?
Last Answer : Plants have no special organs for exchange of gases. In plants gaseous exchange occurs in each part. The different methods are as under: - Through Stomata: - Gaseous exchange takes place ... gaseous exchange. Through Diffusion: - The aquatic plants obtain oxygen by diffusion from water.
Description : What difference in bonding between the solid state and gaseous state of iodine?
Last Answer : Iodine molecule has covalent bonds.
Description : The medicines are most effective, if they are administered in the (a) colloidal state (b) solid state (c) solution state (d) gaseous state
Last Answer : Ans:(a)