Description : Which scientific method is used for the production/extraction of Halogens?
Last Answer : Messenger method
Description : Which scientific method is used for the production/extraction of Aluminium?
Last Answer : Hall Heroult process
Description : Which scientific method is used for the production/extraction of Sulphur?
Last Answer : Frasch process
Description : Which scientific method is used for the production/extraction of Sodium carbonate?
Last Answer : Solvay process
Description : Which scientific method is used for the production/extraction of Ammonia?
Last Answer : Haber process
Description : Which scientific method is used for the production/extraction of Hydrogen?
Last Answer : Bosch process
Description : Which scientific method is used for the production/extraction of Sodium?
Last Answer : Down's process
Description : Which scientific method is used for the production/extraction of Sulphuric acid?
Last Answer : Contact process
Description : Which scientific method is used for the production/extraction of Noble metals?
Last Answer : Cyanide process
Description : Which scientific method is used for the production/extraction of Nitric acid?
Last Answer : OstWald process
Description : Which scientific method is used for the production/extraction of Magnesium?
Last Answer : Dow process
Description : In the extraction of chlorine from brine_________
Last Answer : In the extraction of chlorine from brine_________ A. `DeltaG^(o.)` for the overall reaction is ... ^(o.)` for oveall reaction has negative value
Last Answer : In the extraction of chlorine from brine_________ A. ?`G^(T)` for the overall reaction is ... (T)` for the overall reaction has positive value
Description : In the extraction of chlorine by electrolysis of brine_________.
Last Answer : In the extraction of chlorine by electrolysis of brine_________. A. oxidation of `Cl^(-)` ... negative value D. a displacement reaction takes value
Description : Separation of the isotopes of helium for scientific investigations is done by (A) Reverse osmosis (B) Thermal diffusion (C) Leaching (D) Solvent extraction
Last Answer : (B) Thermal diffusion
Description : Diaphragm electrolytic cell as compared to mercury electrolytic cell (A) Produces 70% NaOH solution (B) Requires less specific power consumption for the production of chlorine (C) Requires lesser investment for similar capacity (D) All (A), (B) and (C)
Last Answer : (C) Requires lesser investment for similar capacity
Description : Industrial production of chloroform requires acetone and (A) Phosgene (B) Calcium hypochlorite (C) Chlorine (D) Ammonium chloride
Last Answer : (B) Calcium hypochlorite
Description : The carbon-based reduction method is NOT used for the extraction of
Last Answer : The carbon-based reduction method is NOT used for the extraction of A. Tin From `SnO_(2)` B. Iton from ... 3)` D. Mangnesium from `MgCO_(3).CaCO_(3)`
Description : The common method for the extraction of metals from the oxide ore is :
Last Answer : The common method for the extraction of metals from the oxide ore is : A. Reduction with carbon B. ... . reduction with `H_(2)` D. electrolytic method
Description : The most suitable method for extraction of copper from low grade sulphide ore is
Last Answer : The most suitable method for extraction of copper from low grade sulphide ore is A. Smelting ... process C. Leaching process D. Electrolytic process
Description : Best method of extraction of tomato seed
Last Answer : Ans. Alkali method
Description : Extraction of uranium from its ore is done by __________ method. (A) Chemical (B) Pyrometallurgical (C) Physical beneficiation (D) Electrometallurgical
Last Answer : (A) Chemical
Description : Which of the following is an undesirable property of slag produced during the Pyrometallurgical method of metal extraction from its ore? (A) High fusibility & fluidity (B) High thermal conductivity (C) Low density (D) High chemical activity
Last Answer : B) High thermal conductivity
Description : cyst at the apex of an upper central incisor measuring 1 cm in diameter is visualized in radiograph and confirmed by aspiration biopsy; which method of treatment would you consider?** ... bone, followed by endodontic treatment. E. Routine orthograde endodontic treatment followed by observation.
Last Answer : D. Making a mucoperiosteal flap and removing the cyst through an opening made in the alveolar bone, followed by endodontic treatment.
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 : Deacon's method is used for the manufacture of (A) Glauber's salt (B) Common salt (C) Chlorine (D) Graphite electrode
Last Answer : (C) Chlorine
Description : Which of the following methods are employed for determination of free and combined chlorine residuals in water ? 1. Starch-iodide method 2. Orthotolidine method 3. Amperometric titration method 4. SNORT method 5. DPD method a) 1, 2, ... b) 1, 2 and 3 only c) 3, 4 and 5 only d) 2, 3, and 4 only.
Last Answer : a) 1, 2, 4 and 5
Description : Which of the following oxides is reduced by water gas to obtain the metal during its extraction?
Last Answer : Which of the following oxides is reduced by water gas to obtain the metal during its extraction? A. `Fe_(2)O_(3)` B. NiO C. ZnO D. `WO_(3)`
Description : Pick out the wrong statement. (A) The operating line always lies above the equilibrium solubility curve in case of a single component absorber (B) The operating line always lies below the equilibrium ... (D) The solubility of a particular gas in ideal solution in any solvent is always the same
Last Answer : (C) The operating pressure in solvent extraction system should be below vapor pressures of all components
Description : AS -10 (Accounting Standard on Fixed Assets) does not deal with accounting for the following items to which special considerations apply A. Forests, plantations and similar regenerative natural ... resources C. Expenditure on real estate development and livestock D. None of the above
Last Answer : D. None of the above
Description : Consider the following gases: 1. Neon 2. Chlorine 3. Carbon dioxide 4. Bromine The gas(es) which is/are not present in normal samples of air is/are: (a) 1 (b) 2 and 4 (c) 3 (d) 4
Last Answer : Ans:(b)
Description : The chief constituent of gobar gas is (a) Methane (b) Ethane (c) Propane (d) Chlorine
Last Answer : Ans:(a)
Description : When zinc reacts with hydrochloric acid, the gas evolved is (a) Oxygen (b) Hydrogen (c) Chlorine (d) None of these
Description : The remedial gas used against the poison- ing of chlorine?
Last Answer : Ammonia
Description : The chlorine compound present in tear gas?
Last Answer : Benzyl Chloride
Description : The remedy gas which is used against the chlorine poisoning?
Last Answer : AMmonia
Description : The colour of Chlorine gas?
Last Answer : Pale yellow green
Description : The scientist who discovered and isolated the chlorine gas?
Last Answer : carl scheele
Description : What happens when heated aluminium powder is sprinkled into a jar of chlorine gas?
Last Answer : As heated aluminium powder comes in contact with chlorine, bright flashes are seen forming aluminium chloride.
Description : The major part of natural gas, petroleum and coal consists of? A. Carbon B. Chlorine C. CFC D. Methane (Answer)
Last Answer : D. Methane (Answer)
Description : Which of the following statement(s) is (are) true for the given situation? Exposure of silver chloride to sunlight for a long duration turns grey due to (i) formation of silver by decomposition of silver chloride (ii) sublimation of ... (b) (ii), (i) and (iii) (c) (ii) and (iii) (d) (iv) only
Last Answer : (a) (i) only
Description : (a) Define a balanced chemical equation. Why should an equation be balanced? (b) Write the balanced chemical equation for the following reaction: (i) Phosphorus burns in presence of chlorine to form phosphorus penta chloride. (ii) Burning of natural gas. (iii) The process of respiration. -Chemistry
Last Answer : Answer. (a) Balanced chemical equation has an equal number of atoms of different elements in the reactants and products. According to law of conservation of mass, matter can neither be created nor be destroyed in a chemical ... C6H12O6 (s) + 6O2 (g) + 6H2O ---> 6CO2 (aq) + 12H2O (l) + energy
Description : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of two different oxioacids of chlorine, P and Q, r
Last Answer : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of ... `H_3PO_2` D. `SOCl_2 , PCl_5` and `H_3PO_5`
Last Answer : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give ... porchloric acids D. (D) chloric and hypochlorus acids
Description : Chlorine gas is dried over:
Last Answer : Chlorine gas is dried over: A. CaO B. NaOH C. conc. `H_2SO_4` D. dil. `H_2SO_4`
Description : 1.12 litre dry chlorine gas at STP was passed over a heated metal when 5.56 g of chloride of the metal was formed. What is the equivalent weight of th
Last Answer : 1.12 litre dry chlorine gas at STP was passed over a heated metal when 5.56 g of chloride of ... formed. What is the equivalent weight of the metal ?
Description : An organic acid (A) reacts with concentrated oxide (C) and a diatomic oxide (D). When D reacts with chlorine gas a poisonous gas (E) is evolve. This g
Last Answer : An organic acid (A) reacts with concentrated oxide (C) and a diatomic oxide (D). When D reacts ... hybridization D. The compound `F=NH_(2)CONH_(2)`
Description : What are the products formed when moist chlorine gas is reacted with hypo?
Last Answer : What are the products formed when moist chlorine gas is reacted with hypo? A. `Na_(2)SO_(4),S,HCl` B. `Na_(2 ... ),HCl` D. `Na_(2)S_(4)O_(6),NaCl,HCl`
Description : If 31.3 g of manganese(II) chloride 48.3 g of chlorine gas and 25.7 g of water react to produce manganese(IV) oxide and hydrochloric acid what is the limiting reactant and what mass of hydrochloric?
Last Answer : Need answer
Description : What is the reaction when solid manganese dioxide reacts with hydrochloric acid to produce manganese chloride liquid water and chlorine gas?
Last Answer : The chemical reaction is:MnO2 + 4 HCl = MnCl2 + Cl2 + 2 H2O