Identify the correct statement with respect to Biogas. (1) Mixture of gases from volcanoes (2) Gas produced from certain crude oil wells (3) Gas produced by incomplete combustion of biomass (4) Gas produced by fermentertian of biomass

Identify the correct statement with respect to Biogas. (1) Mixture of gases from volcanoes (2) Gas produced from certain crude oil wells (3) Gas produced by incomplete combustion of biomass (4) Gas produced by fermentertian of biomass
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(4) Gas produced by fermentertian of biomass Explanation: Biogas is produced by the anaerobic digestion or fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste, plant material, and crops. Biogas comprises primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
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Identify the correct stateme-nt with respect to Biogas. (1) Mixture of gases from volcanoes (2) Gas produced from certain crude oil wells (3) Gas produced by incomplete combustion of biomass (4) Gas produced by fermen-tation of biomass

Description : Identify the correct stateme-nt with respect to Biogas. (1) Mixture of gases from volcanoes (2) Gas produced from certain crude oil wells (3) Gas produced by incomplete combustion of biomass (4) Gas produced by fermen-tation of biomass

Last Answer : Gas produced by fermen-tation of biomass

Cocking need of villages are mostly met by the burning of . A) Biomass. C) Hydroelectric B) Crude oil. D) Neutral gas

Description : Cocking need of villages are mostly met by the burning of . A) Biomass. C) Hydroelectric B) Crude oil. D) Neutral gas

Last Answer : Biomass

Which of the following gases is produced due to incomplete combustion of fuel? (1) Carbon Dioxide (2) Carbon Monoxide (3) Methane (4) Ethane

Description : Which of the following gases is produced due to incomplete combustion of fuel? (1) Carbon Dioxide (2) Carbon Monoxide (3) Methane (4) Ethane

Last Answer : (2) Carbon Monoxide Explanation: Carbon monoxide (CO) is an odorless, colorless gas formed by the incomplete com bustion of fuels. It is produced from the partial oxidation of carbon-containing com pounds; it forms when there is not enough oxygen to produce carbon dioxide.

Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher __________ compared to the dry natural gas. (A) Unsaturated hydrocarbon content (B) Calorific value (C) Quantity of propane (D) Quantity of butane

Description : Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher __________ compared to the dry natural gas. (A) Unsaturated hydrocarbon content (B) Calorific value (C) Quantity of propane (D) Quantity of butane

Last Answer : (B) Calorific value

Coal is formed from – (1) crude oil (2) deposit of animal waste (3) coke (4) compressed and hardened biomass

Description : Coal is formed from – (1) crude oil (2) deposit of animal waste (3) coke (4) compressed and hardened biomass

Last Answer : (4) compressed and hardened biomass Explanation: A fossil fuel, coal forms when dead plant matter is converted into peat, which in turn is converted into lignite, then subbituminous coal, ... lastly anthracite: This involves biological and geological processes that take place over a long period.

Coal is formed from (1) crude oil (2) deposit of animal waste (3) coke (4) compressed and hardened biomass

Description : Coal is formed from (1) crude oil (2) deposit of animal waste (3) coke (4) compressed and hardened biomass

Last Answer : compressed and hardened biomass

The natural source of hydro-carbon is (1) Crude oil (2) Biomass (3) Coal (4) Carbohydrates

Description : The natural source of hydro-carbon is (1) Crude oil (2) Biomass (3) Coal (4) Carbohydrates

Last Answer : Crude oil

Acid rains are produced by (a) excess NO2 and SO2 from burning fossil fuels (b) excess production of NH3 by industry and coal gas (c) excess release of carbon monoxide by incomplete combustion (d) excess formation of CO2 by combustion and animal respiration.

Description : Acid rains are produced by (a) excess NO2 and SO2 from burning fossil fuels (b) excess production of NH3 by industry and coal  gas (c) excess release of carbon monoxide by incomplete  combustion (d) excess formation of CO2 by combustion and  animal respiration.

Last Answer : (a) excess NO2 and SO2 from burning fossil fuels

Acid rains are produced by (a) excess NO2 and SO2 from burning fossil fuels (b) excess production of NH3 by industry and coal gas (c) excess release of carbon monoxide by incomplete combustion (d) excess formation of CO2 by combustion and animal respiration.

Description : Acid rains are produced by (a) excess NO2 and SO2 from burning fossil fuels (b) excess production of NH3 by industry and coal gas (c) excess release of carbon monoxide by incomplete combustion (d) excess formation of CO2 by combustion and animal respiration.

Last Answer : (a) excess NO2 and SO2 from burning fossil fuels

_______ is highly poisonous gas produced as a result of incomplete combustion. a) oxygen b)carbon dioxide c)carbon mono oxide d)soot

Description : _______ is highly poisonous gas produced as a result of incomplete combustion. a) oxygen b)carbon dioxide c)carbon mono oxide d)soot

Last Answer : c)carbon mono oxide

Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases. (A) CO content (B) Dew point (C) CO2 content (D) O2 content

Description : Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases. (A) CO content (B) Dew point (C) CO2 content (D) O2 content

Last Answer : (A) CO content

Which of the following accounts for maximum energy loss in a boiler? (A) Flue gases (B) Ash content in the fuel (C) Incomplete combustion (D) Unburnt carbon in flue gases

Description : Which of the following accounts for maximum energy loss in a boiler? (A) Flue gases (B) Ash content in the fuel (C) Incomplete combustion (D) Unburnt carbon in flue gases

Last Answer : (A) Flue gases

Select the correct statement from the following. (a) Biogas is produced by the activity of aerobic bacteria on animal waste. (b) Methanobacterium is an aerobic bacterium found in rumen of cattle. (c) Biogas, commonly called gobar gas, is pure methane. (d) Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Description : Select the correct statement from the following. (a) Biogas is produced by the activity of aerobic bacteria on animal waste. (b) Methanobacterium is an aerobic bacterium found in rumen of ... sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Last Answer : (d) Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Consider the following statements: 1. Carbyne is an allotrope of carbon. 2. Gasoline, used as a fuel in motor vehicles is a mixture of petrol and alcohol. 3. Petroleum is also known as 'liquid gold'. 4. The various components of crude oil are separated by fractional distillation. The correct statements 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

Description : Consider the following statements: 1. Carbyne is an allotrope of carbon. 2. Gasoline, used as a fuel in motor vehicles is a mixture of petrol and alcohol. 3. Petroleum is also known as 'liquid gold'. 4. The various components of crude ... (b) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

Last Answer : Ans:(b)

The engine produces dark black smoke due to a) Burning of oil b) Due of incomplete combustion c) Due to moisture in fuel d) None of these Ans. b

Description : The engine produces dark black smoke due to a) Burning of oil b) Due of incomplete combustion c) Due to moisture in fuel d) None of these Ans. b

Last Answer : ans b

Natural gasoline is produced (A) From oil wells (B) In oil refineries (C) By natural gas stripping (D) None of these

Description : Natural gasoline is produced (A) From oil wells (B) In oil refineries (C) By natural gas stripping (D) None of these

Last Answer : (C) By natural gas stripping

Clay treatment is used to remove (A) Salt from the crude oil (B) Colour & dissolved gases from cracked gasoline (C) Wax from lube oil (D) None of these

Description : Clay treatment is used to remove (A) Salt from the crude oil (B) Colour & dissolved gases from cracked gasoline (C) Wax from lube oil (D) None of these

Last Answer : (C) Wax from lube oi

Given below is an incomplete table about certain hormones , their source glands and one major effect of each on the body in humans . Identify the corr

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During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water. (A) Decreases (B) Increases (C) Remains unchanged (D) Decreases linearly

Description : During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water. (A) Decreases (B) Increases (C) Remains unchanged (D) Decreases linearly

Last Answer : (B) Increases

The conductivity of crude oil-water mixture depends on the (A) pH value (B) Water percentage (C) Temperature (D) All (A), (B) and (C

Description : The conductivity of crude oil-water mixture depends on the (A) pH value (B) Water percentage (C) Temperature (D) All (A), (B) and (C

Last Answer : (D) All (A), (B) and (C

A 3 L gas mixture of propane `(C_(3)H_(8))` and butane `(C_(4)H_(10))` on complete combustion at 25 C produced 10 L `CO_(2.)` Assuming constant P and

Description : A 3 L gas mixture of propane `(C_(3)H_(8))` and butane `(C_(4)H_(10))` on complete combustion at 25 C produced 10 L `CO_(2.)` Assuming constant P and

Last Answer : A 3 L gas mixture of propane `(C_(3)H_(8))` and butane `(C_(4)H_(10))` on complete combustion at 25 C ... .5L` D. `C_(3)H_(8),0LandC_(4)H_(10),3L`

gas is the mixture mainly consisting of carbon monoxide and hydrogen in specially designed apparatus. a) CNG b) LPG c) Biomass d) None of the above

Description : gas is the mixture mainly consisting of carbon monoxide and hydrogen in specially designed apparatus. a) CNG b) LPG c) Biomass d) None of the above

Last Answer : Biomass

Biomass is obtained For mixture of gas. A) Corban monoxide. C) Hydrogen. B) Both A & C. D) None of the above

Description : Biomass is obtained For mixture of gas. A) Corban monoxide. C) Hydrogen. B) Both A & C. D) None of the above

Last Answer : Both A & C. 

If oxygen content in the flue gas rises too high, fuel is being wasted by (A) Incomplete combustion (B) Dry gas/stack gas loss (C) Moisture loss (D) None of these

Description : If oxygen content in the flue gas rises too high, fuel is being wasted by (A) Incomplete combustion (B) Dry gas/stack gas loss (C) Moisture loss (D) None of these

Last Answer : (B) Dry gas/stack gas loss

During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the (A) Incomplete combustion (B) Complete combustion (C) High oxygen in flue gas (D) None of these

Description : During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the (A) Incomplete combustion (B) Complete combustion (C) High oxygen in flue gas (D) None of these

Last Answer : (B) Complete combustion

When incomplete combustion loss is high, the flue gas analysis shows large amount of (A) CO2 (B) CO (C) O2 (D) C

Description : When incomplete combustion loss is high, the flue gas analysis shows large amount of (A) CO2 (B) CO (C) O2 (D) C

Last Answer : (B) CO

Fuel combustion is never cent per cent efficient due to (A) Incomplete combustion (B) Dry gas/stack gas loss (C) Moisture loss (D) All (A), (B) and (C)

Description : Fuel combustion is never cent per cent efficient due to (A) Incomplete combustion (B) Dry gas/stack gas loss (C) Moisture loss (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Incomplete combustion of a fuel is characterised by the high __________ in the flue gas. (A) Smoke (B) Temperature (C) Oxygen (D) Carbon monoxide

Description : Incomplete combustion of a fuel is characterised by the high __________ in the flue gas. (A) Smoke (B) Temperature (C) Oxygen (D) Carbon monoxide

Last Answer : (D) Carbon monoxide

__________ the exhaust gas is an indication of the incomplete combustion of fuel. (A) Low temperature of (B) High temperature of (C) High % of CO in (D) High % of CO2in

Description : __________ the exhaust gas is an indication of the incomplete combustion of fuel. (A) Low temperature of (B) High temperature of (C) High % of CO in (D) High % of CO2in

Last Answer : (C) High % of CO in

Pick out the wrong statement. (A) LPG is also used as fuel for automobiles & small furnaces and for cutting & welding of metals (B) The minimum temperature, at which a petroleum oil vapor catches fire and continues to burn, is called its flash point (C) Each ton of petroleum oil on distillation produces about 30-50 Nm3 of gas (D) Maximum yield of naphthalene is obtained on distillation of crude oil

Description : Pick out the wrong statement. (A) LPG is also used as fuel for automobiles & small furnaces and for cutting & welding of metals (B) The minimum temperature, at which a petroleum oil vapor catches ... about 30-50 Nm3 of gas (D) Maximum yield of naphthalene is obtained on distillation of crude oil

Last Answer : (B) The minimum temperature, at which a petroleum oil vapor catches fire and continues to burn, is called its flash point

The maximum CO2 is emitted into the atmosphere by (A) Combustion (B) Urea (C) Biomass burning (D) Trees

Description : The maximum CO2 is emitted into the atmosphere by (A) Combustion (B) Urea (C) Biomass burning (D) Trees

Last Answer : (A) Combustion

Pick out the correct statement. (A) Higher hold up of the solid in the rotary dryer results in better exposure of the solids to the gas (B) The 'Hatta number' is important in problems involving gas absorption without chemical reaction (C) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion (D) Total reflux in case of distillation operation requires infinite number of plates for a binary system separation

Description : Pick out the correct statement. (A) Higher hold up of the solid in the rotary dryer results in better exposure of the solids to the gas (B) The 'Hatta number' is ... reflux in case of distillation operation requires infinite number of plates for a binary system separation

Last Answer : (C) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion

Greenhouse effect is the comulative result of the influences of certain gases. Identify the gas which is not involved in this influence:

Description : Greenhouse effect is the comulative result of the influences of certain gases. Identify the gas which is not involved in this influence:

Last Answer : Greenhouse effect is the comulative result of the influences of certain gases. Identify the gas ... . Carbon dioxide C. Chloroflurocarbons D. Nitrogen

Gasoline is 1. Same as diesel oil 2. Same as petrol 3. Obtained from natural gas 4. Obtained from crude oil The correct answers are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Description : Gasoline is 1. Same as diesel oil 2. Same as petrol 3. Obtained from natural gas 4. Obtained from crude oil The correct answers are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Last Answer : Ans:(b)

Crude oil produced by Indian oil fields are predominantly __________ in nature. (A) Paraffinic (B) Naphthenic (C) Asphaltic (D) Mixed base

Description : Crude oil produced by Indian oil fields are predominantly __________ in nature. (A) Paraffinic (B) Naphthenic (C) Asphaltic (D) Mixed base

Last Answer : (C) Asphaltic

Highest quality bitumen is produced from the __________ crude oil. (A) Paraffinic (B) Naphthenic (C) Intermediate (D) Mixed

Description : Highest quality bitumen is produced from the __________ crude oil. (A) Paraffinic (B) Naphthenic (C) Intermediate (D) Mixed

Last Answer : (B) Naphthenic

Pick out the wrong statement. (A) A slight haze at the top of chimney indicates good combustion in the furnace (B) A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature (C) Electrostatic precipitator is the most efficient dust collection equipment for removal of submicronic dust particles present in flue gas (D) None of these

Description : Pick out the wrong statement. (A) A slight haze at the top of chimney indicates good combustion in the furnace (B) A bag filter incurs very small pressure drop and is very efficient for ... dust collection equipment for removal of submicronic dust particles present in flue gas (D) None of these

Last Answer : (B) A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature

How is biogas produced? Why it is called ‘Gobar gas plant’ in rural area? -SST 10th

Description : How is biogas produced? Why it is called ‘Gobar gas plant’ in rural area? -SST 10th

Last Answer : (i) Biogas is produced from shrubs, farm waste, animal and human wastes.It is mostly used for domestic consumption in rural areas. (ii) Decomposition of organic matter yields gas, which has higher thermal ... It prevents the loss of trees and manure due to burning of fuel wood and cow dung cakes.

A ultra-super critical boiler technology is today the option of choice for most new……. fired power stations. a) Coal b) Natural gas c) Biogas d) Oil

Description : A ultra-super critical boiler technology is today the option of choice for most new……. fired power stations. a) Coal b) Natural gas c) Biogas d) Oil

Last Answer : a) Coal

Name the gases present in biomass.

Description : Name the gases present in biomass.

Last Answer : The gas present in biomass is a mixture of – Methane (70-75%) Carbon dioxide (10-15%) Water vapours (5-10%)

The biogas used for cooking is a mixture of which of the following? (1) Carbon dioxide and oxygen (2) Isobutane and propane (3) Methane and Carbon monoxide (4) Methane and carbon dioxide

Description : The biogas used for cooking is a mixture of which of the following? (1) Carbon dioxide and oxygen (2) Isobutane and propane (3) Methane and Carbon monoxide (4) Methane and carbon dioxide

Last Answer : (4) Methane and carbon dioxide Explanation: Biogas is essentially a mixture of Methane (CH4, around 55-75%) but also contains Carbon Dioxide (CO3), around 25- 30%), varying quantities of Water ( ... ) and Carbon Monoxide (CO). Methane is the valuable component under the aspect of using biogas fuel.

The biogas used for cooking is a mixture of which of the following ? (1) Carbon dioxide and oxygen (2) Isobutane and propane (3) Methane and carbon monoxide (4) Methane and carbon dioxide

Description : The biogas used for cooking is a mixture of which of the following ? (1) Carbon dioxide and oxygen (2) Isobutane and propane (3) Methane and carbon monoxide (4) Methane and carbon dioxide

Last Answer :  Methane and carbon dioxide

What is the balanced equation for the incomplete combustion of hexene C6H12?

Description : What is the balanced equation for the incomplete combustion of hexene C6H12?

Last Answer : The chemical equation is:2 C6H6 + 15 O2 = 12 CO2 + 6 H2O

State two disadvantages of incomplete combustion.

Description : State two disadvantages of incomplete combustion.

Last Answer : Incomplete combustion leads to unburnt carbon in the form of soot which pollutes the atmosphere, blackens cooking utensils.

Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the (A) Requirement of large volume combustion chamber (B) Risk of explosion (C) Chances of clinker formation (D) Incomplete combustion of coal

Description : Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the (A) ... chamber (B) Risk of explosion (C) Chances of clinker formation (D) Incomplete combustion of coal

Last Answer : (B) Risk of explosion

High excess air in combustion of fuels results in (A) Increased fuel consumption (B) Incomplete combustion (C) Smoky flame (D) None of these

Description : High excess air in combustion of fuels results in (A) Increased fuel consumption (B) Incomplete combustion (C) Smoky flame (D) None of these

Last Answer : (A) Increased fuel consumption

The major carbon compound formed from the incomplete combustion of a hydrocarbon in air is (a) carbon dioxide (b) carbon monoxide (c) water (d) alkyl chains

Description : The major carbon compound formed from the incomplete combustion of a hydrocarbon in air is (a) carbon dioxide (b) carbon monoxide (c) water (d) alkyl chains

Last Answer : carbon monoxide

Wutomobile catalytic converters cause the carbon monoxide and hydrocarbons which result from incomplete combustion to be converted into what two substances?

Description : Wutomobile catalytic converters cause the carbon monoxide and hydrocarbons which result from incomplete combustion to be converted into what two substances?

Last Answer : ANSWER: CARBON DIOXIDE (CO2) AND WATER (H2O)

Pick out the wrong statement. (A) Activity co-efficient is dimensionless. (B) In case of an ideal gas, the fugacity is equal to its pressure. (C) In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component. (D) The fugacity co-efficient is zero for an ideal gas

Description : Pick out the wrong statement. (A) Activity co-efficient is dimensionless. (B) In case of an ideal gas, the fugacity is equal to its pressure. (C) In a mixture of ideal gases, the fugacity of ... equal to the partial pressure of the component. (D) The fugacity co-efficient is zero for an ideal gas

Last Answer : (D) The fugacity co-efficient is zero for an ideal gas