Description : 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
Last Answer : (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 ... (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
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
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.
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
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.
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
Description : The natural source of hydro-carbon is (1) Crude oil (2) Biomass (3) Coal (4) Carbohydrates
Last Answer : Crude oil
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
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
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
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
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)
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
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
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.
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
Description : 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
Last Answer : Given below is an incomplete table about certain hormones , their source glands and one major effect of ... Placenta" , "Glucagon" , "Calcitonin"):}`
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
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
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`
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
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.
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
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
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
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)
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
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
Description : What is the process of corneal transplan- tation called?
Last Answer : Keratoplasty
Description : The maximum CO2 is emitted into the atmosphere by (A) Combustion (B) Urea (C) Biomass burning (D) Trees
Last Answer : (A) Combustion
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
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
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
Description : Highest quality bitumen is produced from the __________ crude oil. (A) Paraffinic (B) Naphthenic (C) Intermediate (D) Mixed
Last Answer : (B) Naphthenic
Description : The total agricultural land in a village is 1200 hectares. This is distributed among 320 families who form four groups in the following pattern. It is assumed that the land is distributed equally within each group. Identify the group of small ... B 180 300 C 30 300 D 10 300 (1) A (2) B (3) C (4) D
Last Answer : B 180 300
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.
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
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%)
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.
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
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
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.
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
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
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
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)
Description : Given below is an incomplete table on hormones, their source glands and one major effect of each human body. Identify the option representing correct grouping of hormone its gland and ... hormone (b) Placenta Insulin Vasopressin (c) Ovary Insulin Calcitonin (d) Placenta Glucagon Calcitonin
Last Answer : (a) Ovary Glucagon Growth hormone
Description : In what sequence are the following obtained from a natural gas well? 1. Natural Gas 2. Water 3. Crude oil Codes: (a) 1, 3, 2 (b) 1, 2, 3 (c) 3, 2, 1 (d) 2, 1, 3
Last Answer : Ans:(a)
Description : Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API)? (A) Diesel (B) Gasoline (C) Atmospheric gas oil (D) Vacuum gas oil
Last Answer : (C) Atmospheric gas oil