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

1 Answer

Answer :

a) CH4, H2, NH3 and water vapor at 800°C

Related questions

Description : S.L. Miller an American scientist created electric discharge experiment in a closed flask containing `CH_(4),H_(2),NH_(3)` and water vapour at what te

Last Answer : S.L. Miller an American scientist created electric discharge experiment in a closed flask containing `CH_(4),H_(2),NH_ ... . `200^(@)C` D. `1000^(@)C`

Description : Pick up the correct statement from the following: (A) The free quartz suddenly expands at a temperature lower than 600°C (B) The lime stone resists fire upto about 800°C and at higher temperature it splits into ... (C) The sand stone with silicates resist a fire in a better way (D) All the above

Last Answer : Answer: Option D

Description : 5.Miller and Urey performed an experiment to p[rove origin of life.They took gases NH3 and H2 along with (a)N2 and H2O (b)H2O and CH4 (c)CH4 and N2 (d)CO2 and NH3

Last Answer : ANS.(B) H2O and CH4

Description : Who among the following demonstrated experimentally that simple organic molecules like sugar s and amino acids could be produced from inorganic molecules if early earth atmosphere is created (a) Donald Brown (b) A.I. Oparin (c) Oscar Miller (d) Stanley Miller

Last Answer : Ans:(d)

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 : Coke oven gas burns with a yellowish flame, because of the presence of (A) CO2 (B) CH4 (C) H2 (D) NH3

Last Answer : (B) CH4

Description : What is the maximum amount of NH3 gas formed by mixing of 14 g N2 and 6 g H2 gases is?

Last Answer : N2(g) + 3H2(g) ==> 2NH3(g) is the balanced equation for thisreaction.14 g N2 x 1 mole N2/28 g = 0.5 moles N2 present6 g H2 x 1 mole H2/2 g = 3 moles O2 presentIn this situation, the amount of N2 ... by the amount of N2.0.5 moles N2 x 2 moles NH3/1 mole N2 = 1 moles NH3 is themaximum amount of NH3.

Description : During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about __________ percent. (A) 38 (B) 68 (C) 82 (D) 98

Last Answer : (D) 98

Description : Tricresyl phosphate is chemically represented as (A) (CH3 C6 H4 )3 PO4 (B) Ca10 (PO4 )3F6 (C) (NH4 )2HPO4 (D) NH4H2PO4

Last Answer : (A) (CH3 C6 H4 )3 PO4

Description : During the carbonisation of coal (A) All tar is evolved at < 600°C (B) Evolution of H2 and formation of methane and aromatics occur at > 700°C (C) Hard semi-coke starts shrinking at 600°C (D) All (A), (B) and (C)

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

Description : Akiochi disease of rice is caused due to toxicity of — a. CH4 b. H2S c. CO2 d. NH4

Last Answer : b. H2S

Description : Main constituent of the gas produced from a gobar gas plant is (A) CO2 (B) CH4 (C) H2 (D) CO

Last Answer : (B) CH4

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 : Pick out the correct statement. (A) Reaction of NH3 with HNO3 to produce (NH4 )2NO3 is endothermic (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total ... (an intermediate during urea manufacture) is toxic to seeds and animals (D) Both (B) and (C)

Last Answer : (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate

Description : In an integrated steel plant, NH3 present in coke oven gas is normallyrecovered as (A) (NH4 )2SO4 (B) NH4Cl (C) (NH4 )2 NO3 (D) Liquid NH3

Last Answer : (A) (NH4 )2SO4

Description : Which molecule is more likely to exist in nature a molecule of CH3 or a molecule of CH4 Explain?

Last Answer : The molecule of methane is more stable, carbon is tetravalent.

Description : Urea is represented as (A) NH2 .CO.NH2 (B) NH3CO.CH3 (C) NH.CO2 .NH (D) NH3 .CO2 .NH3

Last Answer : (A) NH2 .CO.NH2

Description : Acetamide is a much weaker base than ammonia. This is because (a) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation. (b) ) ... NH2 group. (d) an H atom from the nitrogen is less easily lost from CH3CONH2 than from NH3.

Last Answer : the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation

Description : Point group D3h belong to the molecule a. BF3 b. NH3 c. CHCl3 d. CH3

Last Answer : a. BF3

Description : Why NH3 has a higher boiling point than CH4 and HCl?

Last Answer : Both NH3 and HCl exhibit hydrogen bonding as intermolecularforces, whereas CH4 does not. This makes CH4 have a lower boilingpoint. Since there are 3 hydrogen atoms in NH3 and only 1 inHCl(g), the intermolecular forces would be expected to be greaterin NH3 than in HCl.

Description : Which gas is released from paddy fields? a) CO2 b) H2S c) CH4 d) NH3

Last Answer : c) CH4

Description : The worst enemy of ozone is a) Liquid NH3 b) SO2 c) CH4 d) CO.

Last Answer : c) CH4

Description : Which of the following molecules has a dipole moment? w) BF3 x) NH3 y) CCL4 z) CH4

Last Answer : ANSWER: B -- NH3

Description : Major gaseous pollutant of the thermal power station is (1) H2 S (2) NH3 (3) NO2 (4) SO2

Last Answer : SO2

Description : . Water gas constitutes mainly of (A) CO & H2 (B) CO & N2 (C) CO2 & H2 (D) CH4 & H2

Last Answer : (A) CO & 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 : Gobar gas contains mainly (a) CO2 + H2 (b) CO2 + H2O (c) CH4 only (d) CH4 + CO2.

Last Answer : (d) CH4 + CO2.

Description : The main constituent of biogas is (a) H2 (b) H2S (c) N2 (d) CH4

Last Answer : (d) 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 : Which of the following has the highest flame speed? (A) CO (B) H2 (C) CH4 (D) C2H6

Last Answer : (B) H2

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 : Which of the following has the highest flame velocity? (A) H2 (B) CO (C) CH4 (D) C2H6

Last Answer : (A) H2

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 constitutes mainly of (A) H2 & CO (B) H2 & CH4 (C) CH4 & CO (D) H2 & CO2

Last Answer : (B) H2 & CH4

Description : Main constituent of natural gas is (A) CH4 (upto 90%) (B) C2H6 (C) C3H8 (D) H2

Last Answer : (A) CH4 (upto 90%)

Description : Which of the following has the highest heat of combustion? (A) H2 (B) CO (C) CH4 (D) C2H6

Last Answer : (D) C2H6

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 : 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 : Largest constituent of coke oven gas is (A) N2 (B) H2 (C) CH4 (D) CO

Last Answer : (B) H2

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

Last Answer : (B) CH4

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 : 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 : Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits.  (a) 02, N2, steam, C02  (b) Oz, N2, water vapour  (c) S02, NH3, C02, moisture  (d) 02, N2, H2, air  (e) steam vapours, H2, C02.

Last Answer : Answer : d

Description : In 1953 S.L. Miller created primitive earth conditions in the labortory and gave experimental evidence for origin of first form of life from pre-exist

Last Answer : In 1953 S.L. Miller created primitive earth conditions in the labortory and gave experimental evidence ... atmosphere containing `CH_(4)NH_(3)` etc.