Description : Hydrogen in liquid steels is dissolved (A) As tiny gas bubbles (B) In the atomic form (C) In the ionic form (D) In the molecular form
Last Answer : Option A
Description : When you open a bottle of carbonated cola you see bubbles of gas bursting from the surface. What can you infer about the amount of gas dissolved in the solution before you opened the bottle?
Last Answer : If gas comes out of solution when a bottle is opened, then there must have been a greater amount of dissolved gas in the substance while it was under pressure prior to opening the bottle.
Description : Why do alcohols have boiling points much higher than hydrocarbons of similar molecular weight? (a) Alcohols have greater van der Waals attraction forces. (b) Alcohol molecules have greater ... of volatilization. (d) Alcohols must overcome greater ionic forces in the process of volatilization.
Last Answer : Hydrogen bonds must be broken in the process of volatilization
Description : Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally-------? A. ionic substances B. metallic substances (Answer) C. molecular solids D. covalent network solids
Last Answer : B. metallic substances (Answer)
Description : Identify the false statement (A) Martensitic steels are less susceptible to pitting corrosion than austenitic steels (B) Pitting corrosion is usually very localised (C) Hydrogen embrittlement is facilitated by tensile stress (D) Stress corrosion cracking is facilitated by tensile stress
Last Answer : (A) Martensitic steels are less susceptible to pitting corrosion than austenitic steels
Description : Atomic mass of Nitrogen is 14 and that of Hydrogen is 1. What will be the molecular mass of Ammonia? (1) 18 (2) 17 (3) 16 (4) 15
Last Answer : (2) 17 Explanation: Ammonia (NH3) is composed of one atom of Nitrogen and three Hydrogen atoms. This means that its molar mass of ammonia will be the sum of the molar mass of one nitrogen atom and three times the molar mass of a hydrogen atom.
Description : How are the ionic or dissolved sediments carried in a stream released?
Last Answer : Sediments are carried as the following loads: dissolved, suspended, and bed. A dissolved load is composed of ions in solution. These ions are usually carried in the water all the way to the ocean. ... large to be carried as suspended loads are bumped and pushed along the stream bed, called bed load.
Description : Pick out the wrong statement (A) Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance (B) In case of gas absorption, HETP is ... reaction (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process
Last Answer : (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process
Description : Co-current absorbers are usually used when the gas to be dissolved in the liquid is (A) Sparingly soluble (B) Highly soluble (C) A pure substance (D) A mixture
Last Answer : (C) A pure substance
Description : When the gas to be dissolved in liquid is a/an __________ then normally co-current adsorber are used. (A) Mixture of two gases (B) Pure gas (C) Ideal gas (D) Sparingly soluble gas
Last Answer : (B) Pure gas
Description : The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as (A) Evaporation (B) Cavitation (C) Sublimation (D) Stripping
Last Answer : (B) Cavitation
Description : A coalescer in a mixer-settler liquid-liquid extraction column (A) Comprises of thin bed of substances of extended surface having high porosity (B) Helps in increasing the bubble size entering the settler ... increasing the settling rate of the bubbles (D) All 'a', 'b', & 'c'
Last Answer : (D) All 'a', 'b', & 'c'
Description : In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid. (A) Nucleate (B) Pool (C) Low pressure (D) None of these
Last Answer : (B) Pool
Description : In sub-cooled boiling, (A) Temperature of the heating surface is less than the boiling point of the liquid (B) Temperature of the heating surface is more than the boiling point of the liquid (C) ... from heating surface are absorbed by the mass of the liquid (D) Very large vapour space is necessary
Last Answer : (B) Temperature of the heating surface is more than the boiling point of the liquid
Description : The gas dissolved in water that makes it basic is – (1) ammo (2) sulphur dioxide (3) hydrogen (4) carbon dioxide
Last Answer : (2) sulphur dioxide Explanation: Ammonia has that dissolves in water forms a solution of ammonium hydroxide (NH4OH). This solution (including the gas) is a strong base and will make the solution alkaline.
Description : Pick up the correct statement from the following: A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated ... river C. Solubility of oxygen in sewage is 95% of that of distilled water D. All the above
Last Answer : ANS: D
Description : The gas dissolved in water that makes it basic is : (1) ammonia (2) sulphur dioxide (3) hydrogen (4) carbon dioxide
Last Answer : ammonia
Description : The bubbles in Chanmpagne and Soda are - (1) Nitrogen (2) Oxygen (3) Carbon dioxide (4) Hydrogen
Last Answer : (4) Hydrogen
Description : When Calcium reacts with water it starts floating on top of water because A) bubbles of carbon dioxide formed stick to the surface of metal B) bubbles of hydrogen formed stick to the surface of metalC) Calcium is lighter than water D) None of the above
Last Answer : B) bubbles of hydrogen formed stick to the surface of metal
Description : What is a solution A. a solid dissolved in a gas B. a solute and a solvent C. a liquid dissolved in a gas D. an amalgam of solids, liquids, and gases?
Last Answer : B. A solute and a solvent
Description : The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is?
Last Answer : Henry's law
Description : The ratio of dissolved solids in circulating water to the dissolved solids in makeup water is called a) Liquid gas ratio b) Cycle of concentration c) Cooling tower effectiveness d) None of the above
Last Answer : Cycle of concentration
Description : The ratio of dissolved solids in circulating water to dissolved solids in makeup water is called. • Liquid gas ratio • Cycle of concentration • Cooling tower effectiveness • None of the above
Description : What would be the best ratio of water to liquid soap to make bubbles?
Last Answer : Here is a good recipe: * 6 cups water * 1 cup light corn syrup (Huh, an actual good use for this stuff!) * 2 cups Joy dishwashing soap (If using an ultra concentrated dishwashing liquid, use only 1 1/3 cups) Have fun! :D .
Description : What are the little white bubbles filled with red liquid on the branches of my Coral Black japanese maple?
Last Answer : something has laid eggs on the branches...............check dormant oil for the time of year for that tree...........
Description : Name the process by which bubbles from liquid are formed? (1) Effervescence (2) Surface Tension (3) Surface Energy (4) Degasification
Last Answer : (1) Effervescence Explanation: Effervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from a release of the gas. It leads to the formation of gas ... as soft drinks, the visible bubbles are produced by the escape from solution of the dissolved gas.
Last Answer : Effervescence
Description : In the ionic equation `2K^(+)BrO_(3)^(-)+12H^(+)+10e^(-)rarrBr_(2)+6H_(2)O+2K^(+)`, the equivalent weight of `KBrO_(3)` will be : (where M = molecular
Last Answer : In the ionic equation `2K^(+)BrO_(3)^(-)+12H^(+)+10e^(-)rarrBr_(2)+6H_(2)O+2K^(+)`, the equivalent weight of ` ... )`) A. M/5 B. M/2 C. M/6 D. M/4
Description : Is sulfur dioxide molecular or ionic?
Last Answer : Need answer
Description : Is Cos ionic or molecular?
Last Answer : CO is molecular
Description : Is NaCl ionic or molecular compound?
Last Answer : Sodium chloride is an ionic compound.
Description : Is SiO2 ionic or molecular compound?
Last Answer : Silicon dioxide is a covalent compound.
Description : Is N2O5 an ionic or molecular compound?
Last Answer : N2O5 is a molecular compound because it is composed of non-metals, which form covalent bonds when chemically combined.
Description : Is CuS a ionic or molecular compound?
Last Answer : Copper sulfide is an ionic compound.
Description : Is carbon tetrachloride a molecular or ionic?
Last Answer : Carbon tetrachloride is a covalent compound.
Description : Is XeF4 molecular or ionic?
Last Answer : This compound has covalent bonds.
Description : Is iron(iii)oxide a molecular compound or ionic compound and gt?
Last Answer : Iron oxide is an ionic compound.
Description : Is K2Cr2O7 ionic or molecular?
Description : Is SrO molecular or ionic?
Description : Is BaS molecular or Ionic?
Description : Is AlBr3 ionic or molecular?
Description : Is PtCl2 ionic or molecular?
Description : Is N2O4 an ionic or molecular compound?
Description : Is N2O5 ionic or molecular compound?
Description : Is Ba(SCN)2(S) ionic or molecular compounds?
Description : Is Li2SO4 a molecular or ionic compound?
Last Answer : LI2SO4, lithium sulfate, is an ionic compound.
Description : How compared with the melting points of ionic compounds the melting points of molecular solids tend to be?
Last Answer : Ionic compounds have a higher melting point.
Description : Is HBr molecular or ionic?
Last Answer : HBr is a polar molecular compound which exists in gaseousform.
Description : Is S2Cl2 ionic or molecular?
Last Answer : This is a covalent compound.
Description : Is P4O6 ionic or molecular?
Last Answer : It is a molecular (covalent) compound. Present day text books refer to a covalent compound as a molecular compound, as opposed to an ionic one.