Description : Which of the following diagrams is correctly related to different steps involved in the extraction of Sn form cassiterite Ore?
Last Answer : Which of the following diagrams is correctly related to different steps involved in the extraction ... displacement method `rarr` Vapour phase refing
Description : The magnetic impurity present in cassiterite ore is
Last Answer : The magnetic impurity present in cassiterite ore is A. Silica B. Wolframite C. `SnO_(2)` D. Clay
Description : The main ore of uranium is (A) Pitchblende (B) Monazite sand (C) Cassiterite (D) Chalcopyrite
Last Answer : (A) Pitchblende
Description : Cassiterite is an ore of (A) Tin (B) Lead (C) Molybdenum (D) Chromium
Last Answer : (A) Tin
Description : `BeO,Al_(2)O_(3),SnO_(2),SiO_(2),Sb_(2)O_(3),PbO` are __ oxides
Last Answer : `BeO,Al_(2)O_(3),SnO_(2),SiO_(2),Sb_(2)O_(3),PbO` are __ oxides A. Amphoteric oxides B. Basic C. Acidic D. Neutral
Description : Number of oxide orwesd among , (i) Cassiterite (ii) pyrolusite (iii) Kieserite (iv) Azurite (V) chromite (vi) siderite are.
Last Answer : Number of oxide orwesd among , (i) Cassiterite (ii) pyrolusite (iii) Kieserite (iv) Azurite (V) chromite (vi) siderite are.
Description : How many of the following are oxides ores (i) Carnalite (ii) Cuprite (iii) Cassiterite (iv) Chromite (v) Cinnabar (vi) Calamine (vii) Cerussite (Viii)
Last Answer : How many of the following are oxides ores (i) Carnalite (ii) Cuprite (iii) Cassiterite (iv) ... (vii) Cerussite (Viii) Chalocopyrite (ix) Chalcocite
Description : Which of the following ores does not contain iron? (1) Haematite (2) Magnetite (3) Limonite (4) Cassiterite
Last Answer : (4) Cassiterite
Description : Which of the following is not a non-metalliferous mineral? (A) Calcite (B) Fluorspar (C) Quartz (D) Cassiterite
Last Answer : (C) Quartz (D) Cassiterite
Description : Which one of the following is a mineral of iron? (1) Magnetite (2) Malachite (3) Cassiterite (4) Pyrolusite
Last Answer : Magnetite
Description : What is the role of purified linseed oil in oil painting?
Last Answer : It makes the paint flow better. It’s the equivalent of using water with watercolors or acrylics.
Description : Mass spectrometry- how to identify if the mass spectrograph of a purified sample is a certain chemical given main mass components?
Last Answer : I really should know how to do that. I’m glad my AP Chem teacher doesn’t Fluther.
Description : How schools in Nazi Germany were 'cleansed' and 'purified'? -History 9th
Last Answer : 1.Jew teachers were removed. 2. Students were separated on the basis of race. 3. Undesirable kids were later removed from the school and killed. 4. School books were re-written. 5. Students were taught to ... join . The 10 year old had to join ‘Jungvolk' and 14 year old ‘Hitler Youth'.
Description : In which plant phytochrome is isolated and purified? -Biology
Last Answer : answer:
Description : Which purified oil does Aviation fuel for jet aeroplanes consist? -General Knowledge
Last Answer : The answer is 'Kerosene'
Description : Sewage water is purified by
Last Answer : Sewage water is purified by A. Microorganisms B. light C. Fishes D. Aquatic plants.
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
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
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
Description : Among the metals Ti,V,W,Zr th and Au the number of metals purified van arkel method are…….
Last Answer : Among the metals Ti,V,W,Zr th and Au the number of metals purified van arkel method are…….
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.
Description : In which of the following the impure metal not purified by the oxidation of impurites
Last Answer : In which of the following the impure metal not purified by the oxidation of impurites A. silver ... iron and cadmium D. bessemerisation of pig iron
Description : `Ti` can be purified by Van Arkel process. `TiI_(4)` is a volatile compound which decomposes at a high temperature.
Last Answer : `Ti` can be purified by Van Arkel process. `TiI_(4)` is a volatile compound which decomposes at a ... D. Statement-1 is false but Statement -2 is true
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"):}`
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
Description : When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are :
Last Answer : When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are ... 4)","Impure zinc","Impure sample"):}`
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`.
Last Answer : 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 : In the extraction of aluminium by Hall-Heroult process purified `Al_(2)O_(3)` is mixed with `CaF_(2)` to
Last Answer : In the extraction of aluminium by Hall-Heroult process purified `Al_(2)O_(3)` is mixed with `CaF_(2)` to A ... ^(3+)` into Al(s)` D. acts as catalyst
Description : (A) Led, tin and bismuth are purified by liquation method. (R ) Lead, tin and bismuth have low m.p. as compared to impuriites.
Last Answer : (A) Led, tin and bismuth are purified by liquation method. (R ) Lead, tin and bismuth have low m.p. as ... D. If (A) is incorrect but (R ) is correct
Description : Which of the following pari of metals is purified by VanArkel method
Last Answer : Which of the following pari of metals is purified by VanArkel method A. Ga and In B. Zr and Ti C. Ag and Au D. Ni and Fe
Description : Sea water can be purified by the process of
Last Answer : Desalination
Description : Which purified oil does Aviation fuel for jet aeroplanes consist?
Last Answer : – Kerosene
Description : The first enzyme isolated, purified and crystallied from Jack bean (Canavalia) by summer in 1926 was (A) Urease (B) Insulin (C) Ribonuclease (D) Zymase
Last Answer : Answer : A
Description : Alkaloids are usually purified by extraction with (A) Ether (B) Dil HCl (C) NaOH (D) Chloroform
Last Answer : Answer : B
Description : Why purified macromolecules are used as vaccines ?
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.
Description : Which of the following cannot be purified by sublimation? (a) Iodine (b) Camphor (c) Citric acid (d) Naphthalene
Last Answer : Ans:(c)
Description : Which of the following can be purified by the electrolytic method? (a) Sodium (Na) (b) Copper (Cu) (c) Boron (B) (d) Chlorine (C12)
Last Answer : Ans:129
Description : Camphor can easily be purified by the process of (a) Sublimation (b) Distillation (c) Crystallisation (d) Sedimentation
Last Answer : Ans:(a)
Description : Colloids are purified by (a) Peptisation (b) Coagulation (c) Condensation (d) Dialysis
Last Answer : Ans:(d)
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
Description : Sea water can be purified by the process of – (1) distillation (2) evaporation (3) filtration (4) fractional distillation
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.
Last Answer : Kerosene
Description : How can petroleum be purified?
Last Answer : Fractional distillation
Description : The element which is purified by melt- ing?
Last Answer : Lead
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
Last Answer : (B) A compound of oxygen and deuterium
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
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
Description : Which are the two lower chambers of the heart from which purified blood flows out?
Last Answer : Ventricles