The element which is purified by melt- ing?

The element which is purified by melt-
ing?
by

1 Answer

Answer :

Lead
by

Related questions

Mass spectrometry- how to identify if the mass spectrograph of a purified sample is a certain chemical given main mass components?

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Which of the following cannot be purified by sublimation? (a) Iodine (b) Camphor (c) Citric acid (d) Naphthalene

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Which of the following can be purified by the electrolytic method? (a) Sodium (Na) (b) Copper (Cu) (c) Boron (B) (d) Chlorine (C12)

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Camphor can easily be purified by the process of (a) Sublimation (b) Distillation (c) Crystallisation (d) Sedimentation

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Colloids are purified by (a) Peptisation (b) Coagulation (c) Condensation (d) Dialysis

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How can petroleum be purified?

Description : How can petroleum be purified?

Last Answer : Fractional distillation

Which are the two lower chambers of the heart from which purified blood flows out?

Description : Which are the two lower chambers of the heart from which purified blood flows out?

Last Answer : Ventricles

The haemodialyzer has semi-permeable lining of tubes which help to: (a) To maintain osmotic pressure of blood. (b) To filter nitrogenous wastes from the dialyzing solution. (c) In passing the waste product, in the dialyzing solution. (d) To pump purified blood back into the body of the patient.

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Last Answer : (c) In passing the waste product, in the dialyzing solution.

How can water be purified in the laboratory?

Description : How can water be purified in the laboratory?

Last Answer : In the laboratory, water can be purified by a process called distillation.

What is the role of purified linseed oil in oil painting?

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Last Answer : It makes the paint flow better. It’s the equivalent of using water with watercolors or acrylics.

How schools in Nazi Germany were 'cleansed' and 'purified'? -History 9th

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In which plant phytochrome is isolated and purified? -Biology

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In which plant phytochrome is isolated and purified? -Biology

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Which purified oil does Aviation fuel for jet aeroplanes consist? -General Knowledge

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Which purified oil does Aviation fuel for jet aeroplanes consist? -General Knowledge

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Sewage water is purified by

Description : Sewage water is purified by

Last Answer : Sewage water is purified by A. Microorganisms B. light C. Fishes D. Aquatic plants.

A colloidal solution can be purified by the following method :

Description : A colloidal solution can be purified by the following method :

Last Answer : A colloidal solution can be purified by the following method : A. dialysis B. peptization C. filtration D. oxidation

Sewage water can be purified for recycling with action of :

Description : Sewage water can be purified for recycling with action of :

Last Answer : Sewage water can be purified for recycling with action of : A. Aquatic plant B. Micro organism C. Penicillin D. Fishes

Sewage water is purified for recycling by the action of

Description : Sewage water is purified for recycling by the action of

Last Answer : Sewage water is purified for recycling by the action of A. Light B. Microorganisms C. Aquatic plants D. Fishes

Among the metals Ti,V,W,Zr th and Au the number of metals purified van arkel method are…….

Description : Among the metals Ti,V,W,Zr th and Au the number of metals purified van arkel method are…….

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Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.

Description : Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.

Last Answer : Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.

In which of the following the impure metal not purified by the oxidation of impurites

Description : In which of the following the impure metal not purified by the oxidation of impurites

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`Ti` can be purified by Van Arkel process. `TiI_(4)` is a volatile compound which decomposes at a high temperature.

Description : `Ti` can be purified by Van Arkel process. `TiI_(4)` is a volatile compound which decomposes at a high temperature.

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Cassiterite ore `(SnO_(2))` is purified by

Description : Cassiterite ore `(SnO_(2))` is purified by

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When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes are

Description : When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes are

Last Answer : When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes ... "),("Pure Zinc","ImPure Zinc"):}`

Silver containing lead as an impurity is not purified by

Description : Silver containing lead as an impurity is not purified by

Last Answer : Silver containing lead as an impurity is not purified by A. Poling B. Distillation C. cupellation D. Levigation

When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are :

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Assertion : Nickel can be purified by Mond process. Reason : `Ni(CO)_(4)` is a volatile compound which deomposed at `460K` to give pure `Ni`.

Description : Assertion : Nickel can be purified by Mond process. Reason : `Ni(CO)_(4)` is a volatile compound which deomposed at `460K` to give pure `Ni`.

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In the extraction of aluminium by Hall-Heroult process purified `Al_(2)O_(3)` is mixed with `CaF_(2)` to

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(A) Led, tin and bismuth are purified by liquation method. (R ) Lead, tin and bismuth have low m.p. as compared to impuriites.

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Which of the following pari of metals is purified by VanArkel method

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Sea water can be purified by the process of

Description : Sea water can be purified by the process of

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Which purified oil does Aviation fuel for jet aeroplanes consist?

Description : Which purified oil does Aviation fuel for jet aeroplanes consist?

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The first enzyme isolated, purified and crystallied from Jack bean (Canavalia) by summer in 1926 was (A) Urease (B) Insulin (C) Ribonuclease (D) Zymase

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Alkaloids are usually purified by extraction with (A) Ether (B) Dil HCl (C) NaOH (D) Chloroform

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Why purified macromolecules are used as vaccines ?

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Last Answer : To avoid the risk associated with attenuated and killed whole organism vaccines. 80.Name some purified macromolecules derived from pathogens. They are capsular polysaccharides, inactivated exotoxins and recombinant microbial antigens.

(4) Decomposition of manganese dioxide Explanation: One of the two chemical methods starts from natural manganese dioxide and converts it using dinitrogen tetroxide and water to manganese nitrate solution. Evaporation of the water leaves the crystalline nitrate salt. At temperatures of 400°C, the salt decomposes, releasing N2O4 and leaving a residue of purified manganese dioxide.

Description : (4) Decomposition of manganese dioxide Explanation: One of the two chemical methods starts from natural manganese dioxide and converts it using dinitrogen tetroxide and water to manganese nitrate ... 400°C, the salt decomposes, releasing N2O4 and leaving a residue of purified manganese dioxide.

Last Answer : The mass number of a nucleus is - (1) always less than its atomic number (2) the sum of the number of protons and neutrons present in the nucleus (3) always more than the atomic weight (4) a fraction

Sea water can be purified by the process of – (1) distillation (2) evaporation (3) filtration (4) fractional distillation

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Last Answer : (1) distillation Explanation: The traditional process used in desalination operations is vacuum distillation- essentially the boiling of water at less than atmospheric pressure and thus a much ... when the vapor pressure equals the ambient pressure and vapor pressure increases with temperature.

Which purified oil does Aviation fuel for jet aeroplanes consist?

Description : Which purified oil does Aviation fuel for jet aeroplanes consist?

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Heavy water used in the nuclear reactors to slow down the speed of neutrons is (A) Highly purified water (B) A compound of oxygen and deuterium (C) Water having dissolved salts of heavy metals (D) None of these

Description : Heavy water used in the nuclear reactors to slow down the speed of neutrons is (A) Highly purified water (B) A compound of oxygen and deuterium (C) Water having dissolved salts of heavy metals (D) None of these

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Dust laden air can be purified using a (A) Cyclone separator (B) Bag filter (C) Gravity settler (D) Tubular centrifuge

Description : Dust laden air can be purified using a (A) Cyclone separator (B) Bag filter (C) Gravity settler (D) Tubular centrifuge

Last Answer : (A) Cyclone separator

Which of the following is not used as filter aid? (A) Asbestos (B) Diatomaceous earth (C) Purified wood cellulose (D) Rice husk

Description : Which of the following is not used as filter aid? (A) Asbestos (B) Diatomaceous earth (C) Purified wood cellulose (D) Rice husk

Last Answer : (D) Rice husk

By which method aniline can be purified?

Description : By which method aniline can be purified?

Last Answer : By steam distillation.

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.

Genetic engineering is possible, because (a) we can cut DNA at specific sites by endonucleases like DNase I (b) restriction endonucleases purified from bacteria can be used in vitro (c) the phenomenon of transduction in bacteria is well understood (d) we can see DNA by electron microscope

Description : Genetic engineering is possible, because (a) we can cut DNA at specific sites by endonucleases like DNase I (b) restriction endonucleases purified from bacteria can be used in vitro (c) the phenomenon of transduction in bacteria is well understood (d) we can see DNA by electron microscope

Last Answer : (b) restriction endonucleases purified from bacteria can be used in vitro

Biosensers are used as (a) Purified enzymes (b) Antibodies (c) Whole microbial cells (d) Any of the above

Description : Biosensers are used as (a) Purified enzymes (b) Antibodies (c) Whole microbial cells (d) Any of the above

Last Answer : (c) Reverse transcriptase

Main constituents of purified Lurgi gas are (A) H2 , CmHn & CO2 (B) CO, H2 & CH4 (C) CO2 , O2 & CO (D) N2 , H2 & CO2

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

Brackish water which contains mostly dissolved salt, can be purified by the __________ process. (A) Reverse osmosis (B) Sand filter(C) Lime soda(D) Permutit

Description : Brackish water which contains mostly dissolved salt, can be purified by the __________ process. (A) Reverse osmosis (B) Sand filter (C) Lime soda (D) Permutit

Last Answer : (A) Reverse osmosis

What is the difference between ‘Purified water’ and ‘Water for injection’? How will you prepare ‘ Water for injection’ in laboratory.

Description : What is the difference between ‘Purified water’ and ‘Water for injection’? How will you prepare ‘ Water for injection’ in laboratory.

Last Answer : Purified Water Water for injection 1) Water which is free from volatile and non-volatile impurities is called as purified water.  1) Water which is free from volatile and non-volatile ... in such a way that only the heated water free from gases enters the boiler. Diagram:

Sea water can be purified by the process of (1) distillation (2) evaporation (3) filtration (4) fractional distillation

Description : Sea water can be purified by the process of (1) distillation (2) evaporation (3) filtration (4) fractional distillation

Last Answer : distillation