Description : The process of converting hydrated Alumina into anhydrous Alumina is called
Last Answer : The process of converting hydrated Alumina into anhydrous Alumina is called A. roasting B. smelting C. dressing D. calcination
Last Answer : The process of converting hydrated Alumina into anhydrous Alumina is called A. Roasting B. Smelting C. Dressing D. Calcination
Description : In laboratory preparation of H2O2 from hydrated barium peroxide with sulphuric acid , anhydrous barium peroxide is not used Why ?
Last Answer : Ans-Because it forms a protective layer of barium sulphate over anhydrous barium peroxide
Description : What is the process of converting solid ice into a gas called?
Last Answer : A: Sublimation.
Description : The process involved in converting rubber into a thin sheet or coating it on fabric is called (A) Extrusion (B) Mastication (C) Calendaring (D) Vulcanisation
Last Answer : (C) Calendaring
Description : The process of a solid converting directly into a gas is called: w) fusion x) sublimation y) condensation z) distillation
Last Answer : ANSWER: X -- SUBLIMATION
Description : The process of converting a.c. into d.c. is called: (1) Amplification (2) Modulation (3) Rectification (4) Factorization
Last Answer : The process of converting a.c. into d.c. is called: Rectification.
Description : Give the formula of Borax. Borax is chemically called as. Borax Na2B4O7 10H2O is chemically called as hydrated sodium tetra borate
Last Answer : Garnet is the ore of which element. Give its chemical formula. Garnet is Silicate ore of Aluminium (MgFe) 3 AlSi3O2.
Description : What is a typical process of converting wind energy into electrical energy?
Last Answer : Propellers are turned by the wind, and they turn generators.
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
Last Answer : Ans:(b)
Description : Nitrification is the biological process of converting – (1) N9 into nitrate (2) N2 into nitrite (3) Ammonia into nitrite (4) Ammonia into N2
Last Answer : (3) Ammonia into nitrite Explanation: Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The transformation of ammonia ... limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil.
Description : The process of converting liquid oil into solids saturated fats by passing hydrogen gas is
Last Answer : called hydrogenation.
Description : In plants, __________ is the process of converting stored energy into energy for plant growth. a. Transpiration b. Photosynthesis c. Respiration d. Pollination
Last Answer : Respiration
Description : The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as: a. modulation b. demodulation c. synchronizing d. digitising
Last Answer : digitising
Description : Demodulation is the process of A. converting digital signals toanalog signals B. converting analogsignals todigital signals C. combining many low speed channels into onehigh speed channel D. dividing the high-speed signals into frequency bands E. None of the above
Last Answer : converting analogsignals todigital signals
Description : The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as a. modulation b. demodulation c. synchronizing d. Digitizing
Last Answer : b. demodulation
Description : Yeast play an important role in the alcohol industry, converting pyruvic acid into carbondioxide and ethyl alcohol by the process of A- glycolysis B- respiration C- fermentation D- Krebs cycle
Last Answer : fermentation
Description : Pick up the correct statement from the following: (A) Steel produced by open hearth process is milder than that obtained by the Bessemer process (B) Engineers prefer open hearth steel ... is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel
Last Answer : Answer: Option D
Description : Nitrification is the biological process of converting (1) N2 into nitrate (2) N2 into nitrite (3) Ammonia into nitrite (4) Ammonia into N2
Last Answer : Ammonia into nitrite
Description : One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta)` (hydration) of `AB` is `-29.4 J m
Last Answer : One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta) ... mol^(-1)` D. `-8.4 J mol^(-1)`
Description : The heat of solution of anhydrous `CuSO_(4)` and `CuSO_(4).5H_(2)O` are -15.89 and 2.80 Kcal `mol^(-1)` respectively. What will be the heat of hydrati
Last Answer : The heat of solution of anhydrous `CuSO_(4)` and `CuSO_(4).5H_(2)O` are -15.89 and 2.80 Kcal `mol^(-1) ... `18.69` Kcal C. `-28.96` Kcal D. 28.96 Kcal
Description : `PH_(3) ("anhydrous") + HBr ("anhydrous") rarr X`. Identify X ?
Last Answer : `PH_(3) ("anhydrous") + HBr ("anhydrous") rarr X`. Identify X ? A. `H_(3)BrO_(3)` B. `PH_(4)Br` C. `Br_(2)` D. `P_(4)`
Description : In which following statement are correct. (a) Anhydrous hydrogen fluroide is a liquid at ordianry temperature while other halogen acid are gases. (b)
Last Answer : In which following statement are correct. (a) Anhydrous hydrogen fluroide is a liquid at ordianry temperature while other ... (B) b C. (C) c D. d
Description : Which of the following structures correspond to the product expected, when excess of `C_(6)H_(6)` reacts with `CH_(2)Cl_(2)` in presence of anhydrous
Last Answer : Which of the following structures correspond to the product expected, when excess of `C_(6)H_(6)` reacts with ` ... anhydrous `AlCl_(3)`? A. B. C. D.
Description : From amongest the following alcohols, the one that would react fastest with conc. HCl and anhydrous `ZnCl_(2)` is
Last Answer : From amongest the following alcohols, the one that would react fastest with conc. HCl and anhydrous ` ... . 2-Methylpropan-2-ol D. 2-Methylpropanol-1
Description : `HBr` reacts with `CH_(2)=CH-OCH_(3)` under anhydrous conditions at room temperature to give:
Last Answer : `HBr` reacts with `CH_(2)=CH-OCH_(3)` under anhydrous conditions at room temperature to give: A. `H_(3)C-CHBr- ... (3)OH` D. `BrCH_(2)-CH_(2)-OCH_(3)`
Description : Which alcohol is most reactive towards `HCl` in the presence of anhydrous `ZnCl_(2)`?
Last Answer : Which alcohol is most reactive towards `HCl` in the presence of anhydrous `ZnCl_(2)`? A. primary B. secondary C. tertiary D. all of these
Description : Ethyl alcohol forms X `CaCl_(2)^(3). C_(2)H_(5)OH` when `C_(2)H_(5)OH` reacts with respective anhydrous salts. Then
Last Answer : Ethyl alcohol forms X `CaCl_(2)^(3). C_(2)H_(5)OH` when `C_(2)H_(5)OH` reacts with respective anhydrous salts. Then ... = 4` D. `X = 4, Y = 4, Z = 4`
Description : `XeF_(6)` dissolves in anhydrous `HF` to give a good conducting solution which contains:
Last Answer : `XeF_(6)` dissolves in anhydrous `HF` to give a good conducting solution which contains: A. `H^(+)` and ` ... +)` and `F^(-)` ions D. none of these
Description : Which of the following compounds can be used for drying of `H_(2)S` gas? I. Conc `H_(2)SO_(4)` II. `P_(4)O_(10)` III. Anhydrous `CaC1_(2)` IV. Anhydro
Last Answer : Which of the following compounds can be used for drying of `H_(2)S` gas? I. Conc `H_(2)SO_(4)` II. ` ... IV B. only I C. only II and III D. only III
Description : How do you calculate purity on anhydrous basis?
Last Answer : What is the answer ?
Description : Proteins are soluble in (A) Anhydrous acetone(B) Aqueous alcohol (C) Anhydrous alcohol (D) Benzene
Last Answer : Answer : B
Description : Methanol cannot be dried with anhydrous CaCl2 because - (1) CaCl2 dissolves in it (2) it is not good dehydrating agent (3) it forms a solid CaCl2 × 4CH3OH (4) it reacts with CH3OH
Last Answer : (3) it forms a solid CaCl2 × 4CH3OH
Description : Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C? (A) Silicone rubber, teflon, porcelain and wood (B) Nickel, monel, stainless steel and graphite (C) Aluminium, copper, high silicon iron (D) Brass, cast iron, mild steel and tin
Last Answer : (D) Brass, cast iron, mild steel and tin
Description : Nickel made/clad equipments are suitable for handling (A) Ammonia (both aqueous & anhydrous) (B) Fruit juices, milk & its products and caustic soda solution (C) Nitric acid & hydrochloric acid (concentrated) (D) Sulphuric acid (concentrated)
Last Answer : (B) Fruit juices, milk & its products and caustic soda solution
Description : Tin vessels are corroded by (A) Anhydrous ammonia (B) Aromatic solvents (C) Synthetic detergent solution (D) None of these
Last Answer : (D) None of these
Description : Mild steel storage vessels are suitable for the storage of (A) Anhydrous ammonia (B) Fatty acids (C) Hydrochloric acid (95%) (D) Sulphuric acid (25%)
Last Answer : (A) Anhydrous ammonia
Description : Explain why anhydrous HCl is a bad conductor electricity while aqueous HCl is a good conductor of electricity.
Last Answer : Ans: Hcl is a covalent compound and has no ion but when dissolve into solution it under go dissociation and produce ions in the solution and hence conduct electricity.
Description : For concentrating an aqueous solution of a material like anhydrous Na2SO4, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator. (A) High pressure (B) Vacuum (C) Backward feed (D) None of these
Last Answer : (B) Vacuum
Description : Copper sulphate crystals when heated strongly, lose their water of crystallization to give anhydrous copper sulphate accompanied by a change in color from: (a). Blue to green (b). Blue to white (c). Blue to sky blue (d). Blue to grey
Last Answer : (b). Blue to white
Description : Anhydrous ammonia have equivalent acidity a. 93 b. 110 c. 128 d. 148
Last Answer : d. 148
Description : Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces (A) Ammonium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these
Last Answer : (A) Ammonium phosphate
Description : Raw materials for nitric acid manufacture are (A) Hydrogen peroxide, air and water (B) Anhydrous ammonia and air (C) Anhydrous ammonia, air and water (D) Wet ammonia, air and water
Last Answer : (C) Anhydrous ammonia, air and water
Description : Benzene reacts with benzoyl chloride in the presence of anhydrous aluminium chloride to form (a) Benzyl chloride (b) Benzaldehyde (c) Benzal chloride (d) Benzophenone
Last Answer : Benzophenone
Description : 1,2-Ethanediol reacts with anhydrous zinc chloride to form (a) Ethylene (b) Acetaldehyde (c) Acetylene (d) Ethyl chloride
Last Answer : Acetaldehyde
Description : What steps can be taken to avoid stress corrosion cracking (SCC) in steel vessels used for storing anhydrous ammonia?
Last Answer : The U.S. National Board of Pressure Vessel Inspectors recommends the following in one of their classic articles: 1. Pressure vessels should be fully stress relieved or fabricated with heads that ... at least 0.2 percent water to inhibit SCC. Source: National Board of Pressure Vessel Inspectors
Description : Commonly used chemical fertilizer to con trol submerged weeds and water bloom non -selectively a). Anhydrous ammonia b). Ammonium sulphate c). Ammonium nitrate d). Urea
Last Answer : d). Urea
Description : If a material has the capacity to behave either as an acid or a base it is said to be: w) amorphous x) amphoteric y) anhydrous z) aklaline
Last Answer : ANSWER: X -- AMPHOTERIC