In organic compounds, nitrogen is estimated by – (1) Carius method (2) Victor-Meyees method (3) Liebigs method (4) Dumas' method

In organic compounds, nitrogen is estimated by – (1) Carius method (2) Victor-Meyees method (3) Liebigs method (4) Dumas' method
by

1 Answer

Answer :

(4) Dumas' method Explanation: In Dumas' method, a known quantity of nitrogen containing organic compound is heated strongly with excess of copper oxide in an atmosphere of carbon dioxide to produce free nitrogen in addition to carbon dioxide and water.
by
selected

Related questions

In organic compounds, nitrogen is estimated by (1) Carius method (2) Victor-Meyer’s method (3) Liebig’s method (4) Dumas’ method

Description : In organic compounds, nitrogen is estimated by (1) Carius method (2) Victor-Meyer’s method (3) Liebig’s method (4) Dumas’ method

Last Answer :  Dumas’ method

In organic compounds, nitrogen is estimates by - (1) Dumas method (2) Carius method (3) Victor-meyer's method (4) Liebig's method

Description : In organic compounds, nitrogen is estimates by - (1) Dumas method (2) Carius method (3) Victor-meyer's method (4) Liebig's method

Last Answer : (1) Dumas method

The nitrogen content of proteins can be quantitatively determined by (a) Carius method (b) Kjeldahl's method (c) Victor Meyer's method(d) Rast method

Description : The nitrogen content of proteins can be quantitatively determined by (a) Carius method (b) Kjeldahl's method (c) Victor Meyer's method (d) Rast method

Last Answer : Kjeldahl's method

In Dumas’ method for estimation of nitrogen, 0.3g of an organic compound gave 50mL of nitrogen collected at 300K temperature and 715mm pressure. Calculate the percentage composition of nitrogen in the compound. (Aqueous tension at 300K=15 mm).

Description : In Dumas’ method for estimation of nitrogen, 0.3g of an organic compound gave 50mL of nitrogen collected at 300K temperature and 715mm pressure. Calculate the percentage composition of nitrogen in the compound. (Aqueous tension at 300K=15 mm).

Last Answer : Volume of nitrogen collected at 300K and 715mm pressure is 50 mL Actual pressure = 715-15 =700 mm Volume of Nitrogen at STP=273*700*50/300*760 =41.9 ml 22400 ml of Nitrogen at STP weighs = 28 g 41.9 ml of Nitrogen weighs = 28*41.9/22400 g % of Nitrogen = 28*41.9*100/22400*0.3 = 17.45 %

In an estimation of sulphur by carius method 0.468 g of an organic compound gave 0.668 g of barium sulphate. Find the percentage of sulphur in the compound.

Description : In an estimation of sulphur by carius method 0.468 g of an organic compound gave 0.668 g of barium sulphate. Find the percentage of sulphur in the compound.

Last Answer : Mass of the compound = 0.468 g Mass of the barium sulphate = 0.668 g % of sulphur = 32 X Mass of barium sulphate X 100/ 233 X Mass of the compound = 32 x 0.668x100/ 233 x0.468 = 19.60 %

What is the principle of Dumas method for the estimation of N in the organic compound?

Description : What is the principle of Dumas method for the estimation of N in the organic compound?

Last Answer : In Dumas method , Nitrogen present in organic compound on heating with CuO release free nitrogen gas ,which collected by the downword displacement of KOH. From the voiume of nitrogen gas collected at STP, Nitrogen could be estimated.

0.3780g of organic chloro compound gave 0.5740g of silver chloride in carius estimation .Calculate the percentage of chlorine present in the compound.

Description : 0.3780g of organic chloro compound gave 0.5740g of silver chloride in carius estimation .Calculate the percentage of chlorine present in the compound.

Last Answer : % of chlorine = 35.5*mass of AgCl formed * 100/143.5 * mass of the substance = 35.5*0.5740*100/143.5*0.3780 = 19.6 %

By which Carbon and hydrogen are estimated in organic compounds? -Do You Know?

Description : By which Carbon and hydrogen are estimated in organic compounds? -Do You Know?

Last Answer : The percentages of carbon and hydrogen in the compound are calculated from the masses of carbon dioxide and water. Estimation of carbon and hydrogen in an organic compound is based on their conversion to CO, and H20 respectively

By which Carbon and hydrogen are estimated in organic compounds?

Description : By which Carbon and hydrogen are estimated in organic compounds?

Last Answer : Liebig’s method

By which Carbon and hydrogen are estimated in organic compounds?

Description : By which Carbon and hydrogen are estimated in organic compounds?

Last Answer : Liebig's method

The best method of determining sulphur in crude oil is by the __________ method. (A) Kjeldahl (B) Dumas (C) Bomb calorimeter (D) Junkers calorimeter

Description : The best method of determining sulphur in crude oil is by the __________ method. (A) Kjeldahl (B) Dumas (C) Bomb calorimeter (D) Junkers calorimeter

Last Answer : (C) Bomb calorimeter

(1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, react in the atmosphere in the presence of sunlight containing ultra violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Description : (1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, ... violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Last Answer : Water is not effective in extinguishing a fire caused by petrol because - (1) the flame is too hot for water to cool it down (2) water and petrol react chemically (3) water and petrol are ... (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

Which element found in all organic compounds? (1) carbon (2) nitrogen (3) calcium (4) none of them

Description : Which element found in all organic compounds? (1) carbon (2) nitrogen (3) calcium (4) none of them

Last Answer : (1) carbon Explanation: Carbon is found in all organic matter, but NOT in inorganic matter organic means chemical compounds with carbon in them. In a more general sense, organic refers to living things.

Of the nonmetallic elements the one least likely to be found in organic compounds is: w) nitrogen x) phosphorus y) chlorine z) selenium

Description : Of the nonmetallic elements the one least likely to be found in organic compounds is: w) nitrogen x) phosphorus y) chlorine z) selenium

Last Answer : ANSWER: Z -- SELENIUM

In organic compound, halogens are estimated by which method? -General Knowledge

Description : In organic compound, halogens are estimated by which method? -General Knowledge

Last Answer : The answer is 'Carius method'

In organic compound, halogens are estimated by which method? -General Knowledge

Description : In organic compound, halogens are estimated by which method? -General Knowledge

Last Answer : answer:

In organic compound, halogens are estimated by which method?

Description : In organic compound, halogens are estimated by which method?

Last Answer : Carius method

The ability of Vibrio fischerito produce bioluminescence chemicals only when a certain population density has been reached is an example of A.Liebig's law of the minimum B.Shelford's law of tolerance C.quorum sensingD.Heisenberg's principle of uncertainty

Description : The ability of Vibrio fischerito produce bioluminescence chemicals only when  a certain population density has been reached is an example of A.Liebig's law of the minimum B.Shelford's law of tolerance C.quorum sensing D.Heisenberg's principle of uncertainty

Last Answer : C.quorum sensing

Nitrogen containing organic compounds are called?

Description : Nitrogen containing organic compounds are called?

Last Answer : Alkalloids

Most of Nitrogen is used in the decomposition of __________ and thus plant shows deficiency symptoms : a. Amino acids b. Cellulose c. Carbon compounds d. Organic matter

Description : Most of Nitrogen is used in the decomposition of __________ and thus plant shows deficiency symptoms : a. Amino acids b. Cellulose c. Carbon compounds d. Organic matter

Last Answer : Cellulose

Proteins are most complex organic compounds, containing a. Carbon b. Hydrogen c. oxygen and nitrogen d. All of these

Description : Proteins are most complex organic compounds, containing a. Carbon b. Hydrogen c. oxygen and nitrogen d. All of these

Last Answer : All of these

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) Decomposition of organic nitrogen and conversion of dinitrogen to ammonium compounds (c) Enteric fermentation in cattle and nitrogen fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification

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

For organic compounds, group contribution method can be used for the estimation of (A) Critical properties (B) Specific gravity (C) Specific volume (D) Thermal conductivity

Description : For organic compounds, group contribution method can be used for the estimation of (A) Critical properties (B) Specific gravity (C) Specific volume (D) Thermal conductivity

Last Answer : (A) Critical properties

Whose name is given to alkylmagnesium halides: w) Victor Grignard x) Daniel Rutherford y) Dmitri Mendeleev

Description : Whose name is given to alkylmagnesium halides: w) Victor Grignard x) Daniel Rutherford y) Dmitri Mendeleev

Last Answer : ANSWER: W -- VICTOR GRIGNARD

The modern atomic theory was conceived by : w) Victor Grignard x) Daniel Rutherford y) Svante Arrhenius z) John Dalton

Description : The modern atomic theory was conceived by : w) Victor Grignard x) Daniel Rutherford y) Svante Arrhenius z) John Dalton

Last Answer : ANSWER: Z -- JOHN DALTON

Nitrogen in plant sample is estimated by: a. Refreshrometer b. Kjeldhal’s apparatus c. Spectrophotometer d. All of above

Description : Nitrogen in plant sample is estimated by: a. Refreshrometer b. Kjeldhal’s apparatus c. Spectrophotometer d. All of above

Last Answer : Kjeldhal’s apparatus

For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia acid absorbed in 60 mL of `M/10`

Description : For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia acid absorbed in 60 mL of `M/10`

Last Answer : For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia ... ` B. `10%` C. `3%` D. `5%`

How do I know what physical states I should use for different organic compounds?

Description : How do I know what physical states I should use for different organic compounds?

Last Answer : answer:look in the textbook at the states in which the compounds are labelled in example reactions. They are extremely unlikely to be different in an exam. If they are, it will be a A* mark ... will just be mostly intuitive but then, most people never get a feel for organic chemistry hahahah.

What is the difference in the molecular formula of any two consecutive members of a homologous series of organic compounds? -Chemistry

Description : What is the difference in the molecular formula of any two consecutive members of a homologous series of organic compounds? -Chemistry

Last Answer : —CH2— is the difference in the molecular formula of any two consecutive members of a homologous series of organic compounds.

What are the two differences between organic compounds and inorganic compounds ?

Description : What are the two differences between organic compounds and inorganic compounds ?

Last Answer : The two differences between organic and inorganic compounds are mentioned below: 1. All organic compounds must have carbon in their molecules. Such as: CH 4, C 2 H 3 OH etc. But molecules of ... On the other hand, due to ionic bonds, the reaction of inorganic compounds is faster. Thank you!

Soap Organic Compounds or Inorganic Compounds ?

Description : Soap Organic Compounds or Inorganic Compounds ?

Last Answer : Soap is an organic compound because it is derived from organic compounds. Soap is made by adding caustic soda to organic compounds. . .. CH2-OCO-R .. | CH-OCO-R ............................................ ... .... CH2-OH oil or fat + caustic soda --- > soap + glycerol here R = Cn H 2n + 1 n = 12-18

How do you prepare organic compounds urea ?

Description : How do you prepare organic compounds urea ?

Last Answer : Scientist Friedrich Volar prepares the organic compound urea by heating the inorganic compound ammonium cyanate. Thanks!

What is the name of the first organic compound prepared from inorganic compounds ?

Description : What is the name of the first organic compound prepared from inorganic compounds ?

Last Answer : The first organic compound made from inorganic compound is called urea.

What class of organic compounds is acetylene ?

Description : What class of organic compounds is acetylene ?

Last Answer : Acetylene alkyne class organic compounds.

Are organic compounds electrolytic or covalent substances ?

Description : Are organic compounds electrolytic or covalent substances ?

Last Answer : Organic compounds are covalent substances.

What is the reason for the high number of organic compounds ?

Description : What is the reason for the high number of organic compounds ?

Last Answer : The reasons for the high number of organic compounds are: 1) Cation of carbon element 2) Electronegativity and bonding strength of carbon 3) Equivalence of organic compounds

(3) They are not easily combustible Explanation: Typical organic compounds are combustible by nature as they contain carbon. Organic compounds mostly consist of carbon, hydrogen, halogen, and phosphorus.

Description : (3) They are not easily combustible Explanation: Typical organic compounds are combustible by nature as they contain carbon. Organic compounds mostly consist of carbon, hydrogen, halogen, and phosphorus.

Last Answer : 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

Organic compounds are - (1) Covalent compounds (2) Ionic compounds (3) Co-ordination compounds (4) Interstitial compounds

Description : Organic compounds are - (1) Covalent compounds (2) Ionic compounds (3) Co-ordination compounds (4) Interstitial compounds

Last Answer : (1) Covalent compounds Explanation: Organic compounds are always covalent compounds because it is more energetically favorable for carbon to covalently bond. Organic compounds, such as carbohydrates, lipids, proteins and nucleic acids, are all examples of covalent compounds.

Which one of the following organic compound is used to remove stains of iron compounds? (1) Oxalic acid (2) Benzoic acid (3) Phthalic acid (4) Cinnamic acid

Description : Which one of the following organic compound is used to remove stains of iron compounds? (1) Oxalic acid (2) Benzoic acid (3) Phthalic acid (4) Cinnamic acid

Last Answer : (1) Oxalic acid Explanation: Oxalic acid is a reducing agent and its conjugate base, known as oxalate is a chelating agent for metal cations. Oxalic acid's main applications include cleaning or ... agents is due to its forming a stable, water soluble salt with ferric iron, ferrioxalate ion.

Which one of the following organic compounds has fruity smell? (1) Alcohol (2) Aldehyde (3) Ester (4) Ether

Description : Which one of the following organic compounds has fruity smell? (1) Alcohol (2) Aldehyde (3) Ester (4) Ether

Last Answer : (3) Ester Explanation: Esters are common in organic chemistry and biological materials, and often have a characteristic pleasant, fruity odour. This leads to their extensive use in the fragrance and ... ester as the reaction product. Esters are widespread in nature and are widely used in industry.

What is sublimation? What kind of organic compounds can be purified by this technique?

Description : What is sublimation? What kind of organic compounds can be purified by this technique?

Last Answer : Process of change of solid substance directly into vapour phase without the intermediate liquid state is called sublimation. This technique is used to separate sublimable compounds.Like camphor ,ammonium chloride.

In stable organic compounds, carbon will always form (a) 2 bonds (b) 4 bonds (c) 3 bonds (d) 5 bonds

Description : In stable organic compounds, carbon will always form (a) 2 bonds (b) 4 bonds (c) 3 bonds (d) 5 bonds

Last Answer : 4 bonds

One of the major sources of organic compounds isNatural gas (b) Fermentation (c) Sea water (d) Atmosphere

Description : One of the major sources of organic compounds is Natural gas (b) Fermentation (c) Sea water (d) Atmosphere

Last Answer : Natural gas

Which of the following is not a characteristic of organic compounds? (a) They usually have low melting points. (b) They usually are only slightly soluble or insoluble in water. (c) If water soluble they seldom conduct an electric current. (d) Bonds which bind the atoms together are nearly always ionic.

Description : Which of the following is not a characteristic of organic compounds? (a) They usually have low melting points. (b) They usually are only slightly soluble or insoluble in water. (c) If water ... they seldom conduct an electric current. (d) Bonds which bind the atoms together are nearly always ionic.

Last Answer : Bonds which bind the atoms together are nearly always ionic.

Which of the following materials is the chief source of natural organic compounds? w) petroleum x) coal y) natural gas z) carbon dioxide

Description : Which of the following materials is the chief source of natural organic compounds? w) petroleum x) coal y) natural gas z) carbon dioxide

Last Answer : ANSWER: W -- PETROLEUM

Which of the following organic compounds is known as a saturated chain hydrocarbon ? w) an aromatic compound x) an alkene y) an alkyne z) an alkane

Description : Which of the following organic compounds is known as a saturated chain hydrocarbon ? w) an aromatic compound x) an alkene y) an alkyne z) an alkane

Last Answer : ANSWER: Z -- AN ALKANE

To which class of organic chemical compounds does rhamnose (pron; ram-nose) belong?

Description : To which class of organic chemical compounds does rhamnose (pron; ram-nose) belong?

Last Answer : ANSWER: SUGARS or CARBOHYDRATE 

A family of organic compounds containing only carb and hydrogen and having only single bonds are the: w) alkenes and alkanes x) alkanes and cycloalkanes y) alkynes (pron: AL-kines) and alkenes z) cycloalkanes and alkenes

Description : A family of organic compounds containing only carb and hydrogen and having only single bonds are the: w) alkenes and alkanes x) alkanes and cycloalkanes y) alkynes (pron: AL-kines) and alkenes z) cycloalkanes and alkenes

Last Answer : ANSWER: B -- ALKANES AND CYCLOALKANES

A family of organic compounds whose molecules will add water under an acid catalysis and change into alcohols are the: w) alkenes x) alkanes y) aromatic hydrocarbons z) cycloalkanes

Description : A family of organic compounds whose molecules will add water under an acid catalysis and change into alcohols are the: w) alkenes x) alkanes y) aromatic hydrocarbons z) cycloalkanes

Last Answer : ANSWER: W -- ALKENES

Ketones are organic compounds. Name the functional group that all ketone molecules contain.

Description : Ketones are organic compounds. Name the functional group that all ketone molecules contain.

Last Answer : ANSWER: CARBONYL GROUP pr C DOUBLE BOND O