Description : Impure camphor is purified by (1) sublimation (2) fractional crystallisation (3) fractional distillation (4) steam distillation
Last Answer : sublimation
Description : Aluminium can be purified by (1) oxidation (2) distillation (3) electrolysis (4) ozonolysis
Last Answer : electrolysis
Description : Refining process of impure metals depends upon the differences in properties of the metal. Extraction of Al is usually carried out from its bauxite or
Last Answer : Refining process of impure metals depends upon the differences in properties of the metal. ... . leaching C. liquation D. magnetic seperation
Last Answer : Refining process of impure metals depends upon the differences in properties of the metal. Extraction of Al is usually ... A D. I-D,II-A,III-C,IV-B
Description : Blister copper is refined by stirring moltem impure metal with green logs of wood because such a wood liberated hydrocarbon gases like `(CH_(4))`. The
Last Answer : Blister copper is refined by stirring moltem impure metal with green logs of wood because such a wood ... poling, Y=CuO D. X=cupellation, Y=CuO
Description : Why a mixture is an impure substance? -Chemistry 9th
Last Answer : A mixture is an impure substance. It consists of different elements and substances combined together physically in an unknown ratio. Mostly mixtures are heterogenous. Their constituents are not combined chemically ... freezing point. All these properties of a mixture make it an "Impure substance".
Description : Why is respiration essential for an organism even though it is an impure metabolism ?
Last Answer : An organism needs energy to survive. The process of respiration results in the release of food energy which is expended in various biological functions of the organism. Therefore, although respiration is a metabolic process, it is essential for the organism.
Description : A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. = 45) is dissolved in 100 ml water and titrated with 0.5 M HCI when of `((1)/(5))^(th
Last Answer : A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. = 45) is dissolved in 100 ml ... D. Weight percentage of base in given sample is 80%.
Description : (xiv) Following equation represents a method of purification of nickel by `underset ("Impure")(Ni) + 4CO overset (320 K)rarr Ni(CO)_(4) overset(420 K)
Last Answer : (xiv) Following equation represents a method of purification of nickel by `underset ("Impure")(Ni) + ... Arkel B. Zone refining C. Mond D. Cupellation
Description : Spelter is impure form of
Last Answer : Spelter is impure form of A. Zn B. Ag C. Cu D. Fe
Description : The most impure form of iron is
Last Answer : The most impure form of iron is A. Wrought iron B. mild steel C. hard steel D. Cast iron
Description : Is bromine a compound impure substance mixture or a pure substance?
Last Answer : Need answer
Description : What is the word meaning to make impure or pollute by contact with or addition of something?
Last Answer : The word is contaminate.
Description : Denatured alcohol 1. Is an impure form of ethanol 2. Is unfit for drinking as it contains poisonous substances 3. Contains impurities 4. Is very unsafe to consume The correct answers are: (a) 1, 2 and 4 (b) 1, 2, 3 and 4 (c) 2, 3 and 4 (d) 1, 2 and 3
Last Answer : Ans:(b)
Description : 'Chlorination' is 1. A process of converting chlorides into chlorine 2. Adding small amounts of chlorine to impure water 3. A chemical reaction in which chlorine is formed 4. An addition reaction of ethylene and chlorine The correct statements are: (a) 1 and 4 (b) 2 and 4 (c) 3 and 4 (d) 1 and 2
Description : Which among the following carries impure blood to human heart? (1) Aorta (2) Pulmonary vein (3) Pulmonary arteries (4) Vena Cava
Last Answer : (3) Pulmonary arteries Explanation: A pulmonary artery is an artery in the pulmonary circulation that carries deoxygenated blood from the right side of the heart to the lungs.
Description : Which one of the following is responsible for the working of New-ton's colour disc experiment? (1) Formation of pure spectra (2) Formation of impure spectra (3) Persistence of vision (4) Principle of complementary colour
Last Answer : (3) Persistence of vision Explanation: A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result. This is due to the phenomenon called persistence of vision.
Description : Which is the black impure aluminium oxide mineral found in nature?
Last Answer : Emery
Description : Impure Zinc is known as?
Last Answer : Spelter
Description : The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon. (A) 0.2 (B) 2 (C) 4 (D) 8
Last Answer : (C) 4
Description : The only artery that carry impure blood from the heart?
Last Answer : Pulmonary artery
Description : Intrinsic Semi-conductor is also known as-----? A. Impure-Conductor B. Pure-Conductor (Answer) C. Simple Conductor D. None of these
Last Answer : B. Pure-Conductor (Answer)
Description : The given figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its functions. (a) C - Vena cava - Takes blood from body parts to right auricle, pCO2 = 45 ... 60 mm Hg (d) B - Pulmonary artery - Takes blood from heart to lungs, pO2 = 90 mm Hg
Last Answer : (a) C - Vena cava - Takes blood from body parts to right auricle, pCO2 = 45 mm Hg
Description : Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the ... (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Last Answer : (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Description : A ______ is the one in which the player selects more than one strategy with fixed probabilities before playing the game. a. Mixed strategy b. Pure strategy c. Complete strategy d. Impure strategy
Last Answer : d. Impure strategy
Description : A _______ provides a complete definition of how a player will play a game a. Mixed strategy b. Pure strategy c. Complete strategy d. Impure strategy
Last Answer : c. Complete strategy
Description : Which one of the following is responsible for the working of Newton’s colour disc experiment ? (1) Formation of pure spectra (2) Formation of impure spectra (3) Persistence of vision (4) Principle of complementary colour
Last Answer : Persistence of vision
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 : `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 : Cassiterite ore `(SnO_(2))` is purified by
Last Answer : Cassiterite ore `(SnO_(2))` is purified by A. Magnetic separator B. roasting C. leaching D. Calcination
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