Description : How can you separate hydrogen peroxide into hydrogen and oxygen?
Last Answer : This is easily done. Just expose hydrogen peroxide to air. The oxygen in the air will oxidize the hydrogen peroxide into its component gases. It happens far too slowly for industrial or most other ... nor oxygen is produced in this manner in industry. The enzyme catalyst is called catalase .
Description : Substances containing all the four elements: carbon, hydrogen nitrogen and oxygen are 1. Morphine 2. Nucleic acids 3. Starch 4. Quinine Select the correct answer by using the code below, (a) 2, 3 and 4 only (b) 1, 2 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only
Last Answer : Ans:(b)
Description : The enzyme using some other substance, not oxygen as hydrogen acceptor is (A) Tyrosinase (B) Succinate dehydrogenase (C) Uricase (D) Cytochrome oxidase
Last Answer : Answer : B
Description : An enzyme catalyzing oxidoreduction, using oxygen as hydrogen acceptor is (A) Cytochrome oxidase (B) Lactate dehydrogenase (C) Malate dehydrogenase (D) Succinate dehydrogenase
Last Answer : Answer : A
Description : Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at eathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.
Last Answer : (1) Copper at eathode and oxygen at anode. Explanation: Copper is deposited at the cathode and is dissolved at the anode. Consequently the concentration of copper ions in solution remains constant. This can be used as a method of purification of copper as only pure copper is deposited at the cathode
Description : The gas which was identified in the Sun using spectroscopy before its discovery on earth, is a) oxygen b) hydrogen c) helium d) nitrogen
Last Answer : c) helium
Description : Anaerobic respiration is a. Respiration using electron acceptors other than molecular oxygen b. Respiration using neutron acceptors other than molecular hydrogen c. Respiration using proton acceptors other than molecular nitrogen d. None of the above
Last Answer : a. Respiration using electron acceptors other than molecular oxygen
Description : Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at cathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.
Last Answer : Copper at cathode and oxygen at anode.
Description : All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure. (A) Oxygen (B) Nitrogen (C) Air (D) Hydrogen
Last Answer : (D) Hydrogen
Description : Why does hydrogen iodide in an aqueous solution conduct an electricity?
Last Answer : Hydrogen iodide is dissociated in water.
Description : Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution
Last Answer : (4) They are bad conductor of electricity in aqueous solution Explanation: Acids are good conductors of electric current in aqueous solution. When acids come in contact with water, they liberate OH ions, resulting in conduction of electricity.
Description : State the condition for using the method of centrifugation to separate contents of a mixture.State the principle involved in this process. -Chemistry
Last Answer : The basic principle of centrifugation is that the denser particles remain at the bottom and the lighter particles will remain at the top. it can be used with like colloids to separate suspended particles are separated by churning the liquid at high speed
Description : each lung is fed oxygen by a separate bronchus. -General Knowledge
Last Answer : The given statement is true.
Description : (a) Draw a schematic representation of transport and exchange of oxygen and carbon dioxide during transportation of blood in human beings and label on it: Lung capillaries, Pulmonary artery to ... the advantage of separate channels in mammals and birds for oxygenated and deoxygenated blood? -Biology
Last Answer : (a) A schematic representation of transportation and exchange of oxygen and carbon dioxide during transportation of blood in human beings (b) It is necessary to separate oxygenated and deoxygenated ... . The separation of oxygenated and deoxygenated blood provides high oxygen supply to the organs.
Description : How much electricity does a portable oxygen concentrator use?
Last Answer : Portable oxygen concentrators are energy efficient and use as much electricity as a television. Most portable oxygen concentrators can run 4 hours on battery life alone.
Description : What chemical reaction is toxic hydrogen peroxide will spontaneously break down into water and oxygen?
Last Answer : The chemical reaction is:2 H2O2 = 2 H2O + O2
Description : The gas which turns into liquid at the lowest temperature among the following is – (1) hydrogen (2) oxygen (3) helium (4) nitrogen
Last Answer : (1) hydrogen Explanation: Liquid hydrogen (LH2) is the liquid state, of the element hydrogen. Hydrogen is found naturally in the molecular H2 form. To exist as a liquid, H2 must ... method of obtaining liquid hydrogen involves a compressor resembling a jet engine in both appearance and principle.
Description : The gas which turns into liquid at the lowest temperature among the following is (1) hydrogen (2) oxygen (3) helium (4) nitrogen
Last Answer : hydrogen
Description : Heavy water is so called because it contains - (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms
Last Answer : (1) Heavy isotope of hydrogen Explanation: Heavy water, formally called deuterium oxide, is a form of "water that contains a larger than normal amount of the hydrogen isotope deuterium, (also known as ... ) rather than the common hydrogen-1 isotope that makes up most of the hydrogen in normal water.
Description : Heavy water is so called because it contains (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms
Last Answer : Heavy isotope of 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
Description : The scientist who found that water is a compound of hydrogen and oxygen?
Last Answer : Henry Cavendish
Description : How would one combine the gasses oxygen and hydrogen to form water?
Last Answer : Well, I know it would be two parts hydrogen to one part oxygen, but how the process actually occurs, I can’t tell you.
Description : Oxygen is very flammable. Hydrogen is even more so. So why doesn't water burn?
Last Answer : Because there’s no carbon apparently. Huh. http://blogs.howstuffworks.com/2009/08/11/why-doesnt-water-burn/
Description : What is the ratio of hydrogen to oxygen in water ?
Last Answer : The ratio of hydrogen to oxygen in water is 2: 1
Last Answer : In water Oxygen, Of hydrogen Ratio 1 : 2
Description : 10 g of hydrogen and 64 g of oxygen were filled in a steed vessel and exploded. Amount of water produced in this reaction will be :-
Last Answer : 10 g of hydrogen and 64 g of oxygen were filled in a steed vessel and exploded. Amount of water produced in ... mole B. 3 mole C. 4 mole D. 1 mole
Description : If water sample are taken from sea, rivers or lake, they will be found to contain hydrogen and oxygen in the approximate ratio 1 : 8. This indicates t
Last Answer : If water sample are taken from sea, rivers or lake, they will be found to contain hydrogen ... proportion C. Reciprocal proportions D. None of these
Description : Why does it takes several redox reactions in a cell to water from hydrogen and oxygen?
Last Answer : hydrogen and oxygen combine explosively in a single reaction
Description : What data does a sample of pure water irrespective of its source contains 11.1 hydrogen and 88.9 oxygen support?
Last Answer : It might have supported Proust's law or the law of definitecomposition, or law of constant composition. But unfortunately thedata used are not accurate. The correct proportions, based onrelative atomic masses of hydrogen and oxygen being 1.008 and15.999 give the results as 11.2% and 88.8%.
Description : What is the Ratio of hydrogen to oxygen in water by volume is?
Last Answer : The ratio is 2:1.. There are two Hydrogen atoms for every Oxygenatom in a water molecule.
Description : What kind of bond is formed when the attraction between the hydrogen atom in one water molecule and the oxygen molecule in another?
Last Answer : Feel Free to Answer
Description : When adding electric energy to water molecules can it cause the bonds between Hydrogen and oxygen to break?
Last Answer : What is the answer ?
Description : In the water molecule are electrons are equally shared by hydrogen atoms and oxygen atoms?
Description : What are the differences in the properties of water hydrogen and oxygen?
Description : What is the most abundant gas in our atmosphere oxygen hydrogen nitrogen water?
Last Answer : It is nitrogen, followed by oxygen.
Description : Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen? (1) Nascent Hydrogen (2) Water (3) Hydrogen (4) Ozone
Last Answer : (2) Water Explanation: Hydrogen peroxide (H2O2) is a water molecule with an extra oxygen atom. It is very unstable and breaks down readily into water and a single oxygen molecule. So in nutshell, when Hydrogen peroxide readily loses active oxygen, Water is formed.
Description : Hydrogen is not found in atmosphere because – (1) it is highly inflammable (2) it is the lightest gas (3) it is absorbed by plants (4) it immediately combines with oxygen to form water
Last Answer : (2) it is the lightest gas Explanation: Hydrogen is a chemical element with symbol H and atomic number 1. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydrogen ... hydrogen in its plasma state. Air is the name given to the atmosphere used in breathing and photosynthesis.
Description : In an acid base reaction which product is produced along with a salt? (1) Hydrogen gas (2) Oxygen gas (3) Carbon dioxide (4) Water
Last Answer : (4) Water Explanation: When an acid and a base are placed together, they read to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water.
Description : A gas used as a disinfectant in drinking water is - (1) Hydrogen (2) Oxygen (3) Fluorine (4) Chlorine
Last Answer : (4) Chlorine Explanation: Water chlorination is the process of adding chlorine or chlorine compounds such as sodium hypochlorite to water.
Description : Pick up the correct statement from the following: A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated ... river C. Solubility of oxygen in sewage is 95% of that of distilled water D. All the above
Last Answer : ANS: D
Description : An organic compound contain 69% carbon and 4.8% hydrogen, the remaining being oxygen. Calculate the masses of carbon dioxide and water produced when 0.20g of this substance is subjected to complete combustion.
Last Answer : Calculation of mass of CO2 produced: Mass of compound =0.20g %C =12 x C 69=12*mass of CO2 formed*100/44*0.2 Mass of CO2 formed =69*44*.2/12*100 = 0.506g Similarly, % H =2* mass of H2Oformed*100/18* ... compound 4.8=2* mass of H2Oformed*100/18* 0.2 Mass of H2Oformed =4.8*18*0.2/2*100 =0.0864g
Description : According to Oparin, which one of the following was not present in the primitive atmosphere of the earth? (a) Methane (b) Oxygen (c) Hydrogen (d) Water vapour
Last Answer : b) Oxygen
Description : The high boiling points of alcohols, as compared to the corresponding alkanes, are due to (a) Hydrogen bonding (b) Heavy oxygen atom (c) Water solubility (d) None of these
Last Answer : Hydrogen bonding
Description : Water contains (A) One hydrogen atom and one oxygen atom (B) Two hydrogen atoms and one oxygen atom (C) One hydrogen atom and two oxygen atoms D) Three hydrogen atoms and two oxygen atoms
Last Answer : Answer: Option B
Description : Water consists of hydrogen and oxygen by weight in the ratio?
Last Answer : 1:8.
Description : The residual product discharged by the hydrogen-oxygen cell is ____________ a) Hydrogen peroxide b) Alcohol c) Water d) Potassium permanganate
Last Answer : c) Water
Description : Carbohydrates are composed of ____ and ____. a. carbon, water c. zinc, aluminum b. hydrogen, oxygen d. gold, calcium
Last Answer : a. carbon, water
Description : If 16 grams of oxygen are produced by the electrolysis of water, how many grams of hydrogen are produced at the same time?
Last Answer : ANSWER: 2 GRAMS
Description : Which of the following gases cannot be collected by water displacement? w) Nitrogen x) Oxygen y) Hydrogen z) Hydrogen Chloride
Last Answer : ANSWER: Z -- HYDROGEN CHLORIDE