Description : Which of the following has the highest flame speed? (A) CO (B) H2 (C) CH4 (D) C2H6
Last Answer : (B) H2
Description : Which of the following has the highest flame velocity? (A) H2 (B) CO (C) CH4 (D) C2H6
Last Answer : (A) H2
Description : Main constituent of natural gas is (A) CH4 (upto 90%) (B) C2H6 (C) C3H8 (D) H2
Last Answer : (A) CH4 (upto 90%)
Description : Gross calorific value will be equal to the net calorific value for (A) H2 (B) C2H2 (C) CO (D) C2H6
Last Answer : (C) CO
Description : Main constituent of natural gas is (A) CH4 (B) C2H2 (C) C2H4 (D) C2H6
Last Answer : (A) CH4
Description : Coke oven gas consists mainly of (A) H2 & CH4 (B) CO & CO2 (C) H2 & CO (D) CH4 & CO
Last Answer : (A) H2 & CH4
Description : Coke oven gas constitutes mainly of (A) H2 & CO (B) H2 & CH4 (C) CH4 & CO (D) H2 & CO2
Last Answer : (B) H2 & CH4
Description : Which of the following combustibles is absent in blast furnace gas? (A) H2 (B) CH4 (C) CO (D) None of these
Last Answer : (B) CH4
Description : . Water gas constitutes mainly of (A) CO & H2 (B) CO & N2 (C) CO2 & H2 (D) CH4 & H2
Last Answer : (A) CO & H2
Description : Main constituents of purified Lurgi gas are (A) H2 , CmHn & CO2 (B) CO, H2 & CH4 (C) CO2 , O2 & CO (D) N2 , H2 & CO2
Last Answer : (B) CO, H2 & CH4
Description : Blast furnace gas constitutes mainly of (A) N2 & CH4 (B) N2 & H2 (C) N2 & CO (D) CH4 & CO2
Last Answer : (C) N2 & CO
Description : Main constituent of the gas produced from a gobar gas plant is (A) CO2 (B) CH4 (C) H2 (D) CO
Description : Largest constituent of coke oven gas is (A) N2 (B) H2 (C) CH4 (D) CO
Description : The gas which contributes maximum to the heating value of natural gas is (A) CO (B) CO2 (C) H2 (D) CH4
Last Answer : (D) CH4
Description : The main type of sludge gas evolved during sewage treatment in Imhoff tank is (A) CO2 (B) CH4 (C) CO (D) H2
Description : Given, 3H2 + CO = CH4 + H2O, KP = 10 1.84 and, 4H2 + CO2 = CH4 + 2H2O, KP = 10 1.17 the KP for the reaction CO + H2O = CO2 + H2 is (A) 10 3.01 (B) 10 -0.67 (C) 10 -3.01 (D) 10 0.67
Last Answer : (D) 10 0.67
Description : Coke oven gas consists mainly of (A) H2 , & CH4 (B) CO, & CO2 (C) H2 , & CO (D) CH4 , & CO
Last Answer : (A) H2 , & CH4
Description : Producer gas consists mainly of (A) CO, CO2 N2 , H2 (B) CO, H2 (C) H2 , CH4 (D) C2H2 , CO2 , H2
Last Answer : (A) CO, CO2 N2 , H2
Description : Synthesis gas is a mixture of (A) CO and H2 (B) N2 and H2 (C) H2 , CH4 and CO (D) CO2 and H2
Last Answer : (A) CO and H2
Description : Producer gas is a mixture of (a) CO and H2 (b) CO and N2 (c) CH4 and H2 (d) CO2 and H2
Last Answer : Ans:(a)
Description : The producer gas basically consists of a) Only CH4 b) CO & CH4 c) CO, H2 & CH4 d) Only CO & H2
Last Answer : c) CO, H2 & CH4
Description : Which is not a green house gas? a) CFC b) CH4 c) CO d) H2
Last Answer : a) CFC
Description : Calorific value of gobar gas (containing CH4 = 60% , H2 = 10% ; CO2 = 30%) may be about __________ Kcal/Nm3 . (A) 1,800 (B) 3,200 (C) 5,400 (D) 10,200
Last Answer : (C) 5,400
Description : The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be (A) y (B) 0.95 y (C) 1.05 y (D) 1.8 y
Last Answer : (A) y
Description : Coke oven gas burns with a yellowish flame, because of the presence of (A) CO2 (B) CH4 (C) H2 (D) NH3
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
Description : Gobar gas contains mainly (a) CO2 + H2 (b) CO2 + H2O (c) CH4 only (d) CH4 + CO2.
Last Answer : (d) CH4 + CO2.
Description : Which was absent in the atmosphere at the time of origin of life? (a) NH3 (b) H2 (c) O2 (d) CH4
Last Answer : O2
Description : From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask. (a) CH4, H2, NH3 and water vapor at 800°C (b) CH3, H2, NH4 and water vapor at 800°C (c) CH4, H2, NH3 and water vapor at 600°C (d) CH3, H2, NH3 and water vapor at 600°C
Last Answer : a) CH4, H2, NH3 and water vapor at 800°C
Description : The main constituent of biogas is (a) H2 (b) H2S (c) N2 (d) CH4
Last Answer : (d) CH4
Description : If h1 = inner film co-efficient and /h2 = outer film co-efficient, then the overall heat transfer co-efficient is (A) Always less than h1 (B) Always between h1 and h2 (C) Always higher than h2 (D) Dependent on metal resistance
Last Answer : (B) Always between h1 and h2
Description : A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2 . It means that (A) 21% excess air has been used for combustion (B) 21% excess oxygen has ... (C) Complete combustion of fuel has taken place (D) No excess air has been used for combustion
Last Answer : (C) Complete combustion of fuel has taken place
Description : Blast furnace gas burns with a bluish flame, because of the presence of (A) CO (B) CH4 (C) CO2 (D) S
Last Answer : (A) CO
Description : A sample of natural gas containing 80% methane (CH4 ) and rest nitrogen (N2 ) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is (A) CO2 : 6 ... 96, N2 :72.06 (D) CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74
Last Answer : (B) CO2 : 7.42, CO : 1.86, O2 : 4.64, N2 :86.02
Description : Gobar gas constitutes mainly of (A) CH4 & CO2 (B) CO & CO2 (C) CH4 & N2 (D) CO & N
Last Answer : (A) CH4 & CO2
Description : Blast furnace gas is a very poisonous gas because of its predominantly high __________ content. (A) H2O (B) CO2 (C) CO (D) CH4
Description : The principal gas evolved from sludge digestion tank is (A) CO (B) CO2 (C) CH4 (D) N2
Last Answer : (C) CH4
Description : Pick out the endothermic reaction out of the following. (A) C+ ½O2 = CO (B) CO + 3H2 = CH4 + H2O (C) CaCO3 = CaO + CO2 (D) CO + ½O2 = CO2
Last Answer : (C) CaCO3 = CaO + CO2
Description : A coal with high ash content is undesirable, as (A) It is abrasive to the coal pulveriser (i.e. ball mill) and the combustion chamber (B) The ash in molten condition gets absorbed in the pores of the ... and stick to the boiler tubes thereby reducing the heat transfer (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : What is the order of C-H bond length in C2H6 and C2H4 and C2H2 ?
Last Answer : c2h6>c2h4 >c2h2
Description : Arrange the following in the increasing order of C-C bond length- C2H6 , C2H4, C2H2
Last Answer : Ans. C2H2 < C2H4 < C2H6
Description : Automobile exhaust gas that causes major respiratory problem is a) CO b) CH4 C) NO2 d) Chlorine.
Last Answer : a) CO
Description : Pollutants released from paddy field is a) CO2 b) CO c) H2O2 d) CH4.
Last Answer : d) CH4.
Description : The worst enemy of ozone is a) Liquid NH3 b) SO2 c) CH4 d) CO.
Last Answer : c) CH4
Description : Major aerosol pollutant in Jet Plane emission is a) SO2 b) CO c) CH4 d) CFC.
Last Answer : d) CFC.
Description : The heat of combustion of carbon and monoxide are -394 and -285 KJ `mol^(-1)` respectively. The heat of formation of CO in KJ `mol^(-1)` is :-
Last Answer : The heat of combustion of carbon and monoxide are -394 and -285 KJ `mol^(-1)` respectively. The heat of formation ... B. `-109` C. `+218` D. `-218`
Description : Given standard enthalpy of formation of `CO(-110 "KJ mol"^(-1))` and `CO_(2)(-394 "KJ mol"^(-1))`. The heat of combustion when one mole of graphite bu
Last Answer : Given standard enthalpy of formation of `CO(-110 "KJ mol"^(-1))` and `CO_(2)(-394 "KJ mol"^(-1))`. The heat ... B. `-284` KJ C. `-394` KJ D. `-504` KJ
Description : The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to ... to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.
Last Answer : Combustion of fossil fuel
Description : If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be __________ Kcal. (A) -19.4 (B) -30.2 (C) 55.2 (D) -55.2
Last Answer : (A) -19.4
Description : Which of the following compounds has the highest boiling point? w) CH4 x) CCL4 y) HI z) IF5
Last Answer : ANSWER: Z -- IF5