Description : Nitrate is confirmed by ring test. The brown colour of the ring is due to formation of
Last Answer : Nitrate is confirmed by ring test. The brown colour of the ring is due to formation of A. ferrous nitrite ... C. ferrous nitrate D. `FeSO_(4).NO_(2)`
Description : Under anaerobic conditions, bacterium Pseudomonas changes (a) Nitrate to molecular nitrogen (b) Nitrate to ammonia (c) Nitrate to nitrite (d) Nitrite to nitrate
Last Answer : Ans. ((a))
Description : (3) Conversion of ammonia to nitrites Explanation: Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The oxidation of ammonia ... -oxidizing archaea (AOA). Nitrification is an important step in the nitrogen cycle in soil.
Last Answer : Acid rain is caused due to pollution of atmosphere by – (1) oxides of carbon and nitrogen (2) oxides of nitrogen and sulphur (3) oxides of nitrogen and phosphorous (4) None of these
Description : Which of the following molecules or ions involved in the Nitrogen Cycle do not contain oxygen atom? (1) Nitrite (2) Ammonia (3) Nitrate (4) Laughing gas
Last Answer : (2) Ammonia
Description : Chile saltpeter is the common name of: (1) Sodium nitrate (2) Potassium nitrite (3) Potassium nitrate (4) Sodium nitrite
Last Answer : (1) Sodium nitrate Explanation: Sodium Nitrate (NaNO3) is also known as Chile saltpeter or Peru saltpeter (due to the large deposits found in the Atacama desert in these countries) to ... , pyrotechnics and smoke bombs, glass and pottery enamels, food preservatives, and solid rocket propellant.
Description : Nitrogen in water is commonly found in the form of - (1) Nitrous oxide (2) Nitrate (3) Nitric oxide (4) Nitrite
Last Answer : (2) Nitrate Explanation: Nitrate (NO3) is the most common form of inorganic nitrogen in unpolluted waters. Nitrate moves readily through soils and into ground water, where concentrations can be much higher than in surface waters. Water in coastal areas mainly contains elementary nitrogen gas (N2).
Description : Nitrification is the biological process of converting – (1) N9 into nitrate (2) N2 into nitrite (3) Ammonia into nitrite (4) Ammonia into N2
Last Answer : (3) Ammonia into nitrite Explanation: Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The transformation of ammonia ... limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil.
Description : What is the chemical name for `Baking Soda'? (1) Sodium carbonate (2) Sodium bicarbonate (3) Sodium nitrite (4) Sodium nitrate
Last Answer : (2) Sodium bicarbonate Explanation: Sodium bicarbonate or sodium hydrogen carbonate is the chemical compound with the formula NaHCO3. Sodium bicarbonate is a white solid that is crystalline but often ... It has a slightly salty, alkaline taste resembling that of washing soda (sodium carbonate).
Description : If by radiation all nitrogenase enzyme are inactivated, then there will be no (a) fixation of nitrogen in legumes (b) fixation of atmospheric nitrogen (c) conversion from nitrate to nitrite in legumes (d) conversion from ammonium to nitrate in soil.
Last Answer : (a) fixation of nitrogen in legumes
Description : Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) ... fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification
Last Answer : (d) Anaerobic ammonium oxidation and denitrification
Description : Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as (A) Photochemical smog (B) Peroxyacetyl nitrate (PAN) or methyl nitrite (C) Benzopyrene (D) Polyacrylonitrile
Last Answer : (B) Peroxyacetyl nitrate (PAN) or methyl nitrite
Description : Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in (A) Coagulation and flocculation of colloids (B) Oxidation of carbonaceous matter to CO2 (C) ... to the nitrite and eventually to the nitrate (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Nitrification is the biological process of converting (1) N2 into nitrate (2) N2 into nitrite (3) Ammonia into nitrite (4) Ammonia into N2
Last Answer : Ammonia into nitrite
Last Answer : Sodium nitrate
Description : Nitrogen in water is commonly found in the form of (1) Nitrous oxide (2) Nitrate (3) Nitric oxide (4) Nitrite
Last Answer : Nitrate
Description : What is the chemical name for ‘Baking Soda’ ? (1) Sodium carbonate (2) Sodium bicarbonate (3) Sodium nitrite (4) Sodium nitrate
Last Answer : Sodium bicarbonate
Description : What is the chemical name for ‘baking soda’? (1) Sodium carbonate (2) Sodium bicarbonate (3) Sodium nitrite (4) Sodium nitrate
Description : Aniline reacts with nitrous acid at low temperatures to give (a) a N-nitrosoamine (b) a nitrile (c) a diazonium salt (d) a nitrite salt
Last Answer : a diazonium salt
Description : The comple `[Fe(H_(2)O)_(6)NO]^(2+)` is formed in the brown ring test fro nitrates when freshly prepared `FesO_(4)` solution is added to aqueous solut
Last Answer : The comple `[Fe(H_(2)O)_(6)NO]^(2+)` is formed in the brown ring test fro nitrates when ... electrons is Fe. D. All the above are correct statement.
Description : The brown ring test for `NO_(2)^(-)` and `NO_(3)^(-)` is due to the formation of complex ion with formula `:`
Last Answer : The brown ring test for `NO_(2)^(-)` and `NO_(3)^(-)` is due to the formation of complex ion with formula `:` A. ... )` D. `[Fe(H_(2)O)(NO)_(5)]^(2+)`
Description : The brown compound formed in the ring test for nitrates contains the ion
Last Answer : The brown compound formed in the ring test for nitrates contains the ion A. `[Fe(H_(2)O)_(5)NO]^(3+)` B. `[Fe( ... )NO]^(4+)` D. `[Fe(H_(2)O)_(5)NO]`
Description : Which statement(s) is /are correct about Brown ring test ?
Last Answer : Which statement(s) is /are correct about Brown ring test ? A. This test is given by `NO_(2)^(-) , ... D. Charge on NO in brown ring complex is `+1`.
Description : What happens when? a) A cleaned iron plate or iron nail is kept in 10g of copper sulphate solution. b) A pinch of mercuric oxide is kept in a test tube. c)A small crystal of silver nitrate is dissolved in distilled water and a drop of ammonium hydroxide & a pinch of glucose powder are added.
Last Answer : a) A cleaned iron plate or iron nail is kept in 10g of copper sulphate solution. After a few hours a coating of copper is seen on iron nail/plate. It is based on displacement reaction. ... on the inner walls of the test tube. Aldehyde group in glucose reduced silver nitrate to metallic silver.
Description : Distinguish between Green algae and brown algae.
Last Answer : GREEN ALGAE BROWN ALGAE 1. Mostly fresh water. 1. Mostly marine. 2. Chlorophyll a and chlorophyll b present. 2. Chlorophyll a and chlorophyll c present. 3. Fucoxanthin ... present. 4. Reserve food material is starch. 4. Reserve food material is laminarin.
Description : (2) brown bottles stops the passage of light through it Explanation: Silver Nitrate is stored in dark bottles in a laboratory to prevent chemical reactions as it is sensitive to light. It reacts to light to produce silver metal.
Last Answer : In upper layer of atmosphere ozone is formed by - (1) the action of ultraviolet rays on oxygen (2) the combination of oxygen molecules (3) subjecting oxygen to high pressure (4) the action of nitrogen on oxygen in atmosphere
Description : Silver nitrate solution is kept in brown bottles in laboratory because (1) it reacts with ordinary white bottles (2) brown bottles stops the passage of light through it (3) brown bottles do not react with it (4) brown bottles react with it
Last Answer : brown bottles stops the passage of light through it
Description : The rapid plasma reagin test and VDRL test are both used _____. a. In The Diagnosis Of Syphilis. b. To Detect Toxic Shock Syndrome. c. To Gauge The Extent Of Dental Decay. d. To Distinguish Ureaplasmal And Mycoplasmal Urethritis.
Last Answer : a. In The Diagnosis Of Syphilis.
Last Answer : Nitrite Yojani 1.
Description : In the diazotisation of anline with sodium nitrite and hydrochloride acid, an excess of hydrochloric acid is used primarily to
Last Answer : In the diazotisation of anline with sodium nitrite and hydrochloride acid, an excess of ... nitrous acid D. neutralize the base liberated
Description : Dinitrogen gas is evolved when sodium nitrite is heated below `500^(º)C`
Last Answer : Dinitrogen gas is evolved when sodium nitrite is heated below `500^(º)C` A. alone B. ... chloride C. with sodium chloride D. with potassium nitrate
Description : A compound is made by mixing cobalt (III) nitrite and potassium nitrite solutions in the ratio of 1:3. The aqueous solution of the compound showed 4 p
Last Answer : A compound is made by mixing cobalt (III) nitrite and potassium nitrite solutions in the ratio of 1:3. The aqueous ... )]` D. `K[Co(NO_(2))_(4)]`
Description : Consider the following reaction, Nitrite + Acetic acid + Thiourea `to Na_(2) uarr + HSCN +2H_(2)O`. Formation of the product in the above reaction can
Last Answer : Consider the following reaction, Nitrite + Acetic acid + Thiourea `to Na_(2) uarr + HSCN +2H_(2)O ... (4)// HCl`, when colourless solution is formed.
Description : How many grams are there in 4.50 moles of barium nitrite?
Last Answer : Feel Free to Answer
Description : What is Tin II nitrite?
Last Answer : Tin (ii) Nitrite also called Stannous Nitrite, has the formula Sn(NO2)2 and a molar mass of 210.721
Description : How many iron(II) ions combine with Nitrogen to form iron(II)nitrite?
Last Answer : Iron(II) Nitrite Fe(NO2)2 Molecular Weight -- EndMemo
Description : Which of the following is a vasodilator drug used for hypertension that lacks a direct effect on autonomic receptors but may provoke anginal attacks? (a) Amyl nitrite (b) Hydralazine (c) Isosorbide mononitrate (d) Nifedipine (e) Nimodipine
Last Answer : Ans: B
Description : Which of the following drugs used for the treatment of angina by inhalation has a very rapid onset and a brief duration of effect ? (a) Amyl nitrite (b) Hydralazine (c) Isosorbide mononitrate (d) Nifedipine (e) Nimodipine
Last Answer : Ans: A
Description : Which of the following is approved for the treatment of hemorrhagic stroke ? (a) Amyl nitrite (b) Hydralazine (c) Isosorbide moninitrate (d) Nifedipine (e) Nimodipine
Last Answer : Ans: E
Description : The agent given sublingually in an acute attack of angina pectoris is (a) Glyceryl trinitrate (b) Amyl nitrite (c) Erythrital tetranitrate (d) Pentaerythritol tetranitrate
Description : Which of the following is an iron ore? (1) Bauxite (2) Magnetite (3) Lignite (4) Nitrite
Last Answer : (2) Magnetite Explanation: Magnetite is a 'mineral, one of the two common naturally occurring oxides of Iron. It is the most magnetic of all the naturally occurring minerals on Earth.
Description : What does airbag, used for safety of car driver, contain? A. Sodium bicarbonate B. Sodium azide C. Sodium nitrite D. Sodium peroxide
Last Answer : B. Sodium azide
Description : The antidotal effect of sodium nitrite in cyanide poisoning is dependent upon: A. Chemical combination of sodium nitrite with cyanide B. Vasodilatation caused by sodium nitrite C. ... haemoglobin to methaemoglobin by sodium nitrite D. Facilitation of cyanocobalamine formation by sodium nitrite
Last Answer : C. Conversion of haemoglobin to methaemoglobin by sodium nitrite
Description : The antidotal action of sodium nitrite in cyanide poisoning is based on: A. Physical antagonism B. Chemical antagonism C. Physiological antagonism D. Noncompetitive antagonism
Last Answer : B. Chemical antagonism
Description : Which of the following drug can result in result in cyanide poisoning? A. Amyl nitrite B. Hydroxycobalamine C. Sodium nitroprusside D. Sodium thiosulphate
Last Answer : C. Sodium nitroprusside
Description : Which of the process is known as nitrification? (1) Reaction of Nitrogen Monoxide with oxygen to form nitric acid (2) Reaction of nitrogen dioxide with water to form nitric acid (3) Conversion of ammonia to nitrites (4) Conversion of nitrite to nitric oxide
Last Answer : Conversion of ammonia to nitrites
Description : Which of the following is an iron ore ? (1) Bauxite (2) Magnetite (3) Lignite (4) Nitrite
Last Answer : Magnetite
Description : A salt gives white residue in charcoal cavity test but in cobalt nitrate test it gives pink mass. It represents :
Last Answer : A salt gives white residue in charcoal cavity test but in cobalt nitrate test it gives pink mass. It represents : A. ` ... `Mg^(+2)` D. `PO_(4)^(-3)`
Description : A 'breath test' used by traffic police to check drunken driving uses: (1) potassium dichromate-sulphuric acid (2) potassium permanganate-sulphuric acid (3) turmeric on filter paper (4) silica gel coated with silver nitrate
Last Answer : (1) potassium dichromatesulphuric acid Explanation: The main constituent of alcohol is Ethanol and the concentration of ethanol in a sample can be determined by back titration with acidified potassium ... contact with the yellow dichromate-coated crystals, the color changes from yellow to green.