When Hydrogen starts burning in air, it produces? (1) Ammonia (2) Water (3) Methane (4) Carbonic Acid

When Hydrogen starts burning in air, it produces? (1) Ammonia (2) Water (3) Methane (4) Carbonic Acid
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(2) Water Explanation: Hydrogen burns in oxygen or air to form water. 2H2 + O2 = 2H2O
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When Hydrogen starts burning in air, it produces ? (1) Ammonia (2) Water (3) Methane (4) Carbonic Acid

Description : When Hydrogen starts burning in air, it produces ? (1) Ammonia (2) Water (3) Methane (4) Carbonic Acid

Last Answer : Water

Which of the following statements about respiratory acidosis are true? A. Compensation occurs by a shift of chloride out of the red blood cells. B. Renal compensation occurs rapidly. C. Retention of bicarbonate and increased ammonia formation are normal compensatory mechanisms. D. Narcotic administration is an unusual cause of respiratory acidosis. E. The ratio of bicarbonate to carbonic acid is less than 20:1.

Description : Which of the following statements about respiratory acidosis are true? A. Compensation occurs by a shift of chloride out of the red blood cells. B. Renal compensation occurs rapidly. C. Retention of ... of respiratory acidosis. E. The ratio of bicarbonate to carbonic acid is less than 20:1.

Last Answer : Answer: CE DISCUSSION: Renal compensation for acute hypoventilation is relatively slow. Depression of the respiratory center by morphine can lead to respiratory acidosis. Renal retention of bicarbonate, ... into red cells combine to increase the ratio of bicarbonate to carbonic acid to 20:1

The atmosphere of the primitive earth before origin of life consisted of: (a) Nitrogen, Oxygen, Ammonia, and Water vapour (b) Methane, Ammonia, Hydrogen, and Water vapour (c) Nitrogen, Oxygen, Water, and Carbon dioxide (d) Ammonia, Water, Oxygen, and Hydrogen

Description : The atmosphere of the primitive earth before origin of life consisted of: (a) Nitrogen, Oxygen, Ammonia, and Water vapour (b) Methane, Ammonia, Hydrogen, and Water vapour (c) Nitrogen, Oxygen, Water, and Carbon dioxide (d) Ammonia, Water, Oxygen, and Hydrogen

Last Answer : Ans:(b)

Pick out the wrong statement. (A) Addition of methane to the furnace atmosphere reduces decarburising by hydrogen (B) Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon gases carburise the surface of steel at annealing temperatures (C) Active nitrogen (formed by cracking ammonia at the metal surface) cause nitride formation with increase in surface hardness (D) None of these

Description : Pick out the wrong statement. (A) Addition of methane to the furnace atmosphere reduces decarburising by hydrogen (B) Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon ... the metal surface) cause nitride formation with increase in surface hardness (D) None of these

Last Answer : (D) None of these

Which of the following is NOT a means of preparing carbon dioxide? w) burning coke in the absence of air x) combustion of methane y) heating certain normal carbonates z) action of acids on carbonates

Description : Which of the following is NOT a means of preparing carbon dioxide? w) burning coke in the absence of air x) combustion of methane y) heating certain normal carbonates z) action of acids on carbonates

Last Answer : ANSWER: W -- BURNING COKE IN THE ABSENCE OF AIR 

Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces (A) Higher amount of methane (B) Lower amount of hydrogen (C) Both (A) and (B) (D) Higher amount of both methane and hydrogen

Description : Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces (A) Higher amount of methane (B) Lower amount of hydrogen (C) Both (A) and (B) (D) Higher amount of both methane and hydrogen

Last Answer : (C) Both (A) and (B)

Important buffer system of extracellular fluid is (A) Bicarbonate/carbonic acid (B) Disodium hydrogen phosphate/sodium dihydrogen phosphate (C) Plasma proteins (D) Organic Phosphate

Description : Important buffer system of extracellular fluid is (A) Bicarbonate/carbonic acid (B) Disodium hydrogen phosphate/sodium dihydrogen phosphate (C) Plasma proteins (D) Organic Phosphate

Last Answer : Answer : A

The Sun produces most of its energy by-------? A. Nuclear fusion (Answer) B. nuclear fission C. Burning hydrogen D. None of these

Description : The Sun produces most of its energy by-------? A. Nuclear fusion (Answer) B. nuclear fission C. Burning hydrogen D. None of these

Last Answer : A. Nuclear fusion (Answer)

Consider the production of ammonia from methene and air as raw materials. The catalysts used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis. (A) (i) - Ni/Al2O3 ; (ii) - Cu - ZnO/Al2O3 (B) (i) - Fe/Al2O3 ; (ii) - Cu - ZnO/Al2O3 (C) (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3 (D) (i) - Fe/Al2O3 ; (ii) - Ni/Al2O3

Description : Consider the production of ammonia from methene and air as raw materials. The catalysts used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis. (A) (i) - Ni/Al2O3 ; (ii) - Cu - ZnO/ ... (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3 (D) (i) - Fe/Al2O3 ; (ii) - Ni/Al2O3

Last Answer : (C) (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3

Which of the following molecules would have the smallest molar enthalpy of vaporization? w) Water x) Formaldehyde y) Methane z) Ammonia

Description : Which of the following molecules would have the smallest molar enthalpy of vaporization? w) Water x) Formaldehyde y) Methane z) Ammonia

Last Answer : ANSWER: Y -- METHANE

Complete hydrolysis of proteins produces : (a) Ammonia and carbon dioxide (b) Urea and uric acid (c) A mixture of amino acids (d) Glycogen and a fatty acid

Description : Complete hydrolysis of proteins produces : (a) Ammonia and carbon dioxide (b) Urea and uric acid (c) A mixture of amino acids (d) Glycogen and a fatty acid

Last Answer : A mixture of amino acids

Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water

Description : Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water

Last Answer : (C) Anhydrous ammonia, air and water

Which one of the following group of gases contribute to the "Green House Effect"? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetrailouride and Nitrous oxide

Description : Which one of the following group of gases contribute to the "Green House Effect"? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetrailouride and Nitrous oxide

Last Answer : (1) Carbon dioxide and Methane Explanation: The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When ranked by their direct contribution to the greenhouse ... 72 %, Carbon Dioxide: 9- 26 %, Methane: 4-9 % and Ozone: 3-7 %.

An important green-house gas other than methane being produced from the agricultural fields is– (1) Nitrous oxide (2) Ammonia (3) Sulphur dioxide (4) Arsine

Description : An important green-house gas other than methane being produced from the agricultural fields is– (1) Nitrous oxide (2) Ammonia (3) Sulphur dioxide (4) Arsine

Last Answer : (1) Nitrous oxide Explanation: Nitrous oxide (N2O) and methane (CH4) are the two major greenhouse gasses (GHG) emitted by agricultural activities. N2O accounts for around 8% of the warming impact of current human GHG emissions.

An important green-house gas other than methane being produced from the agricultural fields is (1) Nitrous oxide (2) Ammonia (3) Sulphur dioxide (4) Arsine

Description : An important green-house gas other than methane being produced from the agricultural fields is (1) Nitrous oxide (2) Ammonia (3) Sulphur dioxide (4) Arsine

Last Answer : Nitrous oxide

Which one of the following group of gases contribute to the “Green House Effect”? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetraflouride and Nitrous oxide

Description : Which one of the following group of gases contribute to the “Green House Effect”? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetraflouride and Nitrous oxide

Last Answer : Carbon dioxide and Methane

The gas that usually causes explosions in coal mines is - (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Description : The gas that usually causes explosions in coal mines is - (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Last Answer : (4) Methane Explanation: Methane is extremely flammable and may form explosive mixtures with air. Methane is violently reactive with oxidizers, halogens, and some halogen-containing compounds. Methane gas explosions are responsible for many deadly mining disasters.

The gas usually causing explosions in coal mines is – (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Description : The gas usually causing explosions in coal mines is – (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Last Answer : (4) Methane Explanation: Firedamp is flammable gas found in coal mines. It is the name given to a number of flammable gases, especially methane.

The gas that usually causes explosions in coal mines is (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Description : The gas that usually causes explosions in coal mines is (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Last Answer : Methane

State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases’are mixed. -Chemistry

Description : State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases’are mixed. -Chemistry

Last Answer : This is the Answer:

Why normal rain is slightly acidic? A. due to presence of dust in air B. carbon dioxide and water in clouds react to form carbonic acid (Answer) C. Ozone depletion D. All of these

Description : Why normal rain is slightly acidic? A. due to presence of dust in air B. carbon dioxide and water in clouds react to form carbonic acid (Answer) C. Ozone depletion D. All of these

Last Answer : B. carbon dioxide and water in clouds react to form carbonic acid (Answer)

What is the signal of carbonic acid ?

Description : What is the signal of carbonic acid ?

Last Answer : H2CO3 is the signal of organic.

The compound used in prickly-heat powder to prevent excessive sweating is – (1) Boric acid (2) Phosphoric acid (3) Carbonic acid (4) Sulphonic acid

Description : The compound used in prickly-heat powder to prevent excessive sweating is – (1) Boric acid (2) Phosphoric acid (3) Carbonic acid (4) Sulphonic acid

Last Answer : (1) Boric acid Explanation: Boric acid (H3BO3), also called hydrogen borate, boracie acid, orthoboric acid and acidum boricum, is used in prickly heat powders to prevent excessive sweating. Boric ... dressings or salves. As an antibacterial compound, boric acid can also be used for acne treatment.

The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Description : The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Last Answer : (4) Sulphuric acid Explanation: Sodium bicarbonate and organic acid (Formic acid, Acetic acid, Carbonic acid, etc) react vigorously to liberate carbon dioxide. For example, Sodium bicarbonate (NaHCO3) when treated with acetic acid reacts vigorously to liberate carbon dioxide.

Milk tastes sour when it is left in open for some time. This happens due to the formation of (1) Lactic acid (2) Citric acid (3) Acetic acid (4) Carbonic acid

Description : Milk tastes sour when it is left in open for some time. This happens due to the formation of (1) Lactic acid (2) Citric acid (3) Acetic acid (4) Carbonic acid

Last Answer : (1) Lactic acid Explanation: Milk contains a sugar called lactose, a disaccharide (compound sugar) made by the glycosidic bonding between glucose and glactose (monosaccharides). When milk is heated to ... multiplies. These convert the lactose into lactic acid, which imparts the sour taste to curd.

Milk tastes sour when kept in the open for sometime due to the formation of – (1) lactic acid (2) citric acid (3) acetic acid (4) carbonic acid

Description : Milk tastes sour when kept in the open for sometime due to the formation of – (1) lactic acid (2) citric acid (3) acetic acid (4) carbonic acid

Last Answer : (1) lactic acid Explanation: Like many other things, milk contains bacteria, Milk also naturally contains a kind of sugar known as "lactose." The bacteria that live in milk get energy from this ... sugars to reproduce, they change it from "lactose sugar" into "lactic acid," which tastes sour.

The compound used in pricklyheat powder to prevent excessive sweating is (1) Boric acid (2) Phosphoric acid (3) Carbonic acid (4) Sulphonic acid

Description : The compound used in pricklyheat powder to prevent excessive sweating is (1) Boric acid (2) Phosphoric acid (3) Carbonic acid (4) Sulphonic acid

Last Answer : Boric acid

The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Description : The acid which fails to liberate carbon dioxide from sodium bicarbonate is : (1) Acetic acid (2) Formic acid (3) Carbonic acid (4) Sulphuric acid

Last Answer : Sulphuric acid

Milk tastes sour when kept in the open for sometime due to the formation of (1) lactic acid (2) citric acid (3) acetic acid (4) carbonic acid

Description : Milk tastes sour when kept in the open for sometime due to the formation of (1) lactic acid (2) citric acid (3) acetic acid (4) carbonic acid

Last Answer :  lactic acid

The gas used in a refrigerator to cool water is------? A. Nitrogen B. Carbon dioxide C. Methane D. Ammonia (Answer)

Description : The gas used in a refrigerator to cool water is------? A. Nitrogen B. Carbon dioxide C. Methane D. Ammonia (Answer)

Last Answer : D. Ammonia (Answer)

Pick out the wrong statement. (A) Dehydration of ammonium carbamate to produce urea is endothermic (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable (C) Gypsum (CaSO4 . 2H2O) is obtained as a by-product in the wet process for manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate

Description : Pick out the wrong statement. (A) Dehydration of ammonium carbamate to produce urea is endothermic (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India ... manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate

Last Answer : (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable

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

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

Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces (A) Ammonium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these

Description : Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces (A) Ammonium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these

Last Answer : (A) Ammonium phosphate

Magnesium ribbon on burning in air produces a) magnesium oxide ,water and light c) magnesium oxide and heat b) magnesium oxide , heat and light d) magnesium oxide, water and heat

Description : Magnesium ribbon on burning in air produces a) magnesium oxide ,water and light c) magnesium oxide and heat b) magnesium oxide , heat and light d) magnesium oxide, water and heat

Last Answer : b) magnesium oxide , heat and light

In fermentation reactions occurring in yeast, two products of metabolism are ______ and ______. a. Acid; Hydrogen Gas b. Hydrogen Gas; Sucrose c. Ethyl Alcohol; Methane d. Carbon Dioxide; Ethyl Alcohol

Description : In fermentation reactions occurring in yeast, two products of metabolism are ______ and ______. a. Acid; Hydrogen Gas b. Hydrogen Gas; Sucrose c. Ethyl Alcohol; Methane d. Carbon Dioxide; Ethyl Alcohol

Last Answer : a. Acid; Hydrogen Gas

The gas which may cause explosion in sewers, is A. Carbondioxide B. Methane C. Ammonia D. Carbon monoxide

Description : The gas which may cause explosion in sewers, is A. Carbondioxide B. Methane C. Ammonia D. Carbon monoxide

Last Answer : ANS: B

The common refrigerant used in domestic Refrigerator is-------? A. Neon B. Spirit C. Freon/Ammonia (Answer) D. Methane

Description : The common refrigerant used in domestic Refrigerator is-------? A. Neon B. Spirit C. Freon/Ammonia (Answer) D. Methane

Last Answer : C. Freon/Ammonia (Answer)

A major component of gobar gas is (a) ammonia (b) methane (c) ethane (d) butane.

Description : A major component of gobar gas is (a) ammonia (b) methane (c) ethane (d) butane.

Last Answer : (b) methane

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)

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)

Which of the following is NOT a primary green house gas in the earth's atmosphere? (1) Methane (2) Ozone (3) Nitrous oxide (4) Hydrogen

Description : Which of the following is NOT a primary green house gas in the earth's atmosphere? (1) Methane (2) Ozone (3) Nitrous oxide (4) Hydrogen

Last Answer : (4) Hydrogen Explanation: Greenhouse gases are those that absorb and emit infrared radiation in the wavelength range emitted by Earth.

Biogas majorly contains - (1) Ethane (2) Methane (3) Hydrogen (4) CO

Description : Biogas majorly contains - (1) Ethane (2) Methane (3) Hydrogen (4) CO

Last Answer : (2) Methane Explanation: Biogas is a mixture of different gases, major portion in biogas being methane (CH4) and carbon dioxide (CO2). It also contains traces of other gases like hydrogen (H2), Moisture (H2O) , hydrogen sulfide (H2S) etc.

L.P.G. is mostly liquefied (1) hydrogen (2) Oxygen (3) butane (4) methane

Description : L.P.G. is mostly liquefied (1) hydrogen (2) Oxygen (3) butane (4) methane

Last Answer : (3) butane Explanation: Liquefied petroleum gas or liquid petroleum gas (LPG) is mostly propane (C3H8), or butane (C4H10). They are most commonly mixtures of these two hydrocarbon gases that ... northern hemisphere winter, the mixes contain more propane, while in summer, they contain more butane.

Which of the following is the best fuel in terms of energy released per gram of fuel? (1) Hydrogen (2) Methane (3) Ethanol (4) Butane

Description : Which of the following is the best fuel in terms of energy released per gram of fuel? (1) Hydrogen (2) Methane (3) Ethanol (4) Butane

Last Answer : (1) Hydrogen Explanation: The amount of energy released increases with the number of bonds present in the chemical substance or fuel. That is because each bond has a certain amount of energy stored in it therefore the more bonds ... KJ/g; Methane: 55.6 KJ/ g; Ethanol: 29.7 KJ /g; Butane: 49.6KJ/g.

Biogas majorly contains? (1) Ethane (2) Methane (3) Hydrogen (4) CO

Description : Biogas majorly contains? (1) Ethane (2) Methane (3) Hydrogen (4) CO

Last Answer : (2) Methane Explanation: Biogas is a mixture of different gases, major portion in biogas being methane (CH4) and carbon dioxide (CO2). It also contains traces of other gases like hydrogen (H2), Moisture (H2O), hydrogen sulphide (H2S) etc.

Which of the following gases is mixed with oxygen for breathing by divers in aqualungs? (1) Methane (2) Nitrogen (3) Helium (4) Hydrogen

Description : Which of the following gases is mixed with oxygen for breathing by divers in aqualungs? (1) Methane (2) Nitrogen (3) Helium (4) Hydrogen

Last Answer : (2) Nitrogen Explanation: For some diving, has mixtures other than normal atmospheric air (21 % oxygen, 78% nitrogen, 1% trace gases) can be used, so long as the diver is properly ... reducing the likelihood of decompression sickness or allowing longer exposure to the same pressure for equal risk.

Domestic cooking gas consists mostly of (1) methane and ethane (2) liquefied butane and isobutene (3) hydrogen and acetylene (4) ethylene and carbon monoxide

Description : Domestic cooking gas consists mostly of (1) methane and ethane (2) liquefied butane and isobutene (3) hydrogen and acetylene (4) ethylene and carbon monoxide

Last Answer : (2) liquefied butane and isobutene Explanation: Domestic gas is another name for Liquefied Petroleum Gas (LPG). Varieties of LPG bought and sold include mixes that are primarily propane (C3H8), primarily ... propane and butane, depending on the season - in winter more propane, in summer more butane.

Indane gas is a mixture of which gases? (1) butane and hydrogen (2) butane and propane (3) butane and oxygen (4) methane and oxygen

Description : Indane gas is a mixture of which gases? (1) butane and hydrogen (2) butane and propane (3) butane and oxygen (4) methane and oxygen

Last Answer : (2) butane and propane

Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Description : Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Last Answer : (2) Methane Explanation: Bio gas is a clean unpolluted and cheap source of energy in rural areas. It consists of 55-70% methane which is inflammable. Bio gas is produced from cattle dung in ... called digestion. It helps in reducing the deforestation as it arrests for cutting of trees for firewood.

Gobar gas mainly contains – (1) Carbon dioxide (2) Carbon monoxide (3) Hydrogen sulphide (4) Methane

Description : Gobar gas mainly contains – (1) Carbon dioxide (2) Carbon monoxide (3) Hydrogen sulphide (4) Methane

Last Answer : (4) Methane Explanation: Biogas or Lobar gas is produced by the anaerobic digestion or fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste, plant material ... (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.

Chlorine free radicals react with methane by : (a) donating their free-radical electron to methane to form chloromethane. (b) abstracting a hydrogen atom from methane, and producing HCl and a methyl radical. (c) forming a carbanion intermediate that rapidly dissociates to produce chloromethane. (d) forming a carbonium ion intermediate that rapidly dissociates to form chloromethane

Description : Chlorine free radicals react with methane by : (a) donating their free-radical electron to methane to form chloromethane. (b) abstracting a hydrogen atom from methane, and producing ... produce chloromethane. (d) forming a carbonium ion intermediate that rapidly dissociates to form chloromethane

Last Answer : abstracting a hydrogen atom from methane, and producing HCl and a methyl radical