Description : The solution made by dissolving Salt (NaOH) in water is called as
Last Answer : Ans. Brine solution
Description : What is the molarity of a salt solution prepared b dissolving three moles of salt in 500 milliliters of water? w) 1 x) 2 y) 4 z) 6
Last Answer : ANSWER: Z -- 6
Description : What is the molality of a salt solution prepared by dissolving two moles of salt in 500 grams of water?
Last Answer : ANSWER: 4
Description : What is the molality of a solution made by dissolving 6 moles of Noah in 3 kg of water?
Last Answer : Feel Free to Answer
Description : An aqueous solution of sodium chloride is prepared by dissolving 10kg of sodium chloride in 50 kg of water find (i) Weight % (ii) Mole % of solution. [Atomic weight of Na = 23, Cl = 35.5]
Last Answer : Weight of NaCl = 10 kg Weight of H2O = 50 kg Total weight = 60 kg Weight % of NaCl = (10/ 60) * 100 =16.67% Weight % of H2O = (50/ 60) * 100 = 83.33% Molecular weight of NaCl = 58.5 k moles of NaCl ... 100 = 5.79% Mol % of H2O = (moles of H2O / Total moles)*100 = (2.78/ 2.949)*100 = 94.26%
Description : While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is (A) Infinity (B) Unity (C) Constant (D) Negative
Last Answer : (C) Constant
Description : What is the molarity of a solution made by dissolving 6 moles of naoh in 3 kg?
Last Answer : Need answer
Description : What is the molar mass of haemocyanin and the freezing point of the solution when an aqueous solution is prepared by dissolving 1.5 grams of haemocyanin a protein obtained from crabs in 0.25 litres of?
Last Answer : Haemocyanins are a group of proteins.
Description : A gas engine has a volume of 300 cc and clearance volume of 25 cc. Its volumetric efficiency is 0.8 and mech efficiency is 0.9. What is the volume of the mixture taken in per stroke? (a) 248 cc (b) 252 cc (c) 264 cc (d) 286 cc
Last Answer : Ans : c
Description : Saturated steam at 1 atm is discharged from a turbine at 1200 kg/h. Superheated steam at 300 0C and 1 atm is needed as a feed to a heat exchanger. To produce it, the turbine discharge ... amount of superheated steam at 300 0C produced and the volumetric flow rate of the 400 0C steam.
Last Answer : Solution 1. Mass balance of water 1200 + m1 = m2 ………………………………………… (1) …………………….1 mark 2. Energy balance (1200 kg/h)(2676 kJ/kg) + m1(3278 kJ/kg)
Description : A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one- ... beam, the number of shear stirrups required, is (A) 30 (B) 35 (C) 40 (D) 45
Last Answer : Answer: Option C
Description : An engine working on air standard Otto cycle has a cylinder diameter of 10 cm and stroke length of 15 cm. The ratio of specific heats for air is 1.4. If the clearance volume is 196.3 cc and the heat supplied per kg of air per ... kg of air is a. 879.1 kJ/ b. 890.2 kJ c. 895.3 kJ d. 973.5 kJ
Last Answer : ANSWER d. 973.5 kJ
Description : When 25 g of `Na_(2)SO_(4)` is dissolved in `10^(3)` Kg of solution, its concentration will be
Last Answer : When 25 g of `Na_(2)SO_(4)` is dissolved in `10^(3)` Kg of solution, its concentration will be A. 2.5 ppm B. 25 ppm C. 250 ppm D. 100 ppm
Description : How does dissolving a salt molecule in water make its atoms ionize? -Space
Last Answer : When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules. Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.
Description : What is produced by dissolving salt in water ?
Last Answer : When salt is dissolved in water, solution is produced.
Description : When Salt dissolving water physical change or chemical change?
Last Answer : It is a physical change because the chemical composition of saltand water do not change. You can separate the salt and waterphysically by allowing the water to evaporate, which leaves thesalt.
Description : Is salt the slowest dissolving powder?
Description : Which of the following operations does not involve leaching? (A) Dissolving gold from ores (B) Dissolving pharmaceutical products from bark or roots (C) Dissolving sugar from the cells of the beet (D) Removing nicotine from its water solution by kerosene
Last Answer : (D) Removing nicotine from its water solution by kerosene
Description : Pick out the wrong statement regarding the solubility characteristics of high polymers. (A) Greater the degree of cross-linking in the polymer, lesser is its solubility (B) Polymers having more ... of the solvent (D) High molecular weight polymers on dissolving gives solution of very low viscosity
Last Answer : (D) High molecular weight polymers on dissolving gives solution of very low viscosity
Description : The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which ‘D’ is the diffusivity of solute, is (A) D/a (B) D/2a (C) Proportional to √D (D) Dependent on the Reynolds number
Last Answer : (D) Dependent on the Reynolds number
Description : (5) A 6500-kg helicopter accelerates upward at 0.60 m/s² while lifting a 1200-kg car. (a) What is the lift force exerted by the air on the rotors? (b) What is the tension in the cable (ignore its mass) that connects the car to the helicopter?
Last Answer : I'll give you some hints: The mass of the helicopter is irrelevant to the solution. All you needs is the mass of the load (the car) and the acceleration to solve the problem. Remember that the ... it. Tension is directly related to force. Now go find the equations in the text, plug and crank.
Description : A negative heat of solution indicates that: w) an endothermic dissolving process occurs x) solute solubility increases with rising solution temperature y) solute solubility decreases with rising solution temperature z) super-saturation conditions exist
Last Answer : ANSWER: Y -- SOLUTE SOLUBILITY DECREASES WITH RISING SOLUTION TEMPERATURE
Description : An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension
Last Answer : (3) The density of salt solution exceeds the density of eggs Explanation: Following the density principle, the density of the egg compared to the density of the tap water is lesser (the density principle ... and that is why an egg sinks in soft water but floats in a concentrated solution of salt.
Description : An egg sinks in soft water but floats in a concentrated solution of salt because (1) egg absorbs salt from the solution and expands (2) albumin dissolves in salt solution and egg becomes lighter (3) the density of salt solution exceeds the density of eggs (4) water has high surface tension
Last Answer : the density of salt solution exceeds the density of eggs
Description : A moist soil sample weighing 108 g has a volume of 60 cc. If water content is 25% and value of G = 2.52, the void ratio is (A) 0.55 (B) 0.65 (C) 0.75 (D) 0.80
Last Answer : (C) 0.75
Description : The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2 /m3 ) (A) 500 (B) 1200 (C) 900 (D) 800
Last Answer : (A) 500
Description : Two observation wells penetrating into a confined aquifer are located 1500 m apart in the direction of flow. Heads of 50 m and 25 m are indicated at these two observation wells. If the coefficient of permeability for the ... well to another is (a) 75 days (b) 750 days (c) 1200 days (d) 3000 days
Last Answer : (b) 750 days
Description : For determine the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled ... of soil solids, is (A) 2.0 (B) 2.25 (C) 2.50 (D) 2.75
Last Answer : (C) 2.50
Description : If the total amount of a drug present in the body at a given moment is 2.0 g and its plasma concentration is 25 μg/ml, its volume of distribution is: A. 100 L B. 80 L C. 60 L D. 50 L
Last Answer : B. 80 L
Description : 2 If the total amount of a drug present in the body at a given moment is 2.0 g and its plasma concentration is 25 μg/ml, its volume of distribution is: A. 100 L B. 80 L C. 60 L D. 50 L
Description : If the total amount of a drug present in the body at a given moment is 2.0 g and its plasma concentration is 25 μ g/ml, its volume of distribution is: A. 100 L B. 80 L C. 60 L D. 50 L
Description : What is the concentration of solution in ppm if 2 kg of 2,4-D is mixed with 1000 lit of water?
Last Answer : Ans.2000
Description : a) 110 g of salt is present in 550g of solution. Calculate the concentration of solution. b) 10 ml of H2SO 4 is dissolved in 90 ml of H2O. Calculate the concentration of solution. -Chemistry
Last Answer : The concentration of salt is determined by the division of mass of the solute by the mass of the solution and the percentage is obtained by multiplying the value by 100. The quotient of the division of 110 by 550 is 0.2 here. So after multiplying it with 100, it is 20%. So the concentration is 20%.
Description : The concentration of a salt solution in terms of mass by mass percentage is 20 and the mass of the solution is 550 g. Determine the mass of solute present in the solution. -Chemistry
Last Answer : Mass by mass percentage = 20% Mass of solution= 550gram Mass of solute/mass of solution multipled by 100 Therefore, 20/100 = 1/5 Hence, Mass of solute=Mass of solution/5 = 550gram/5 = 110Gram Therefore, The mass of solute is 110gm
Description : What is the percent by mass concentration of a solution that contains 5.30 of salt?
Last Answer : The concentration of a solution is basically how strong the solution is.
Description : If span is 150 mts and sag is 10 ft of a cable carrying a load of 3200 kg per horizontal metre then tension of ends is a.104,000 kg b.107 dynes c.1200,000 kg d.932,000 kg e.584,000 kg
Last Answer : d. 932,000 kg
Description : In spring mass experiment, the natural frequency of 10 kg mass was found to be 12 rad/sec. the stiffness of the spring is A. 800 N/m B. 1200 N/m C. 1440 N/m D. 2000 N/m
Last Answer : C. 1440 N/m
Description : While testing a cast iron beam (2.5 cm × 2.5 cm) in section and a metre long simply supported at the ends failed when a 100 kg weight is applied at the centre. The maximum stress induced is: (A) 960 kg/cm2 (B) 980 kg/cm2 (C) 1000 kg/cm2 (D) 1200 kg/c
Last Answer : (A) 960 kg/cm
Description : The weight of 1 m3 of brick earth, is about (A) 1200 kg (B) 1500 kg (C) 1800 kg (D) 2000 kg
Description : One cubit metre of cement weights [ A ] 1000 kg [ B ] 1200 kg [ C ] 1440 kg [ D ] 1600 kg
Last Answer : [ C ] 1440 kg
Description : in titration of 25 mL of the solution containing Cu2+ with the concentration of 0.01 molar , with SCN – (0.01 Molar) , if we use the indicator that changed its color in PSCN= 9. Calculate the error of titration PKSP(CuSCN) =13.4?
Last Answer : just the color change from the indicator. Thus, a careful selection of the indicator will reduce the indicator error. For example, if the equivalence point is at a pH of 8.4, then the ... are in the range of aqueous pH changes are of little use. Instead, the titrant and indicator used
Description : 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is: (A) 0.4 (B) 0.25 (C) 0.2 (D) 0.175
Last Answer : (C) 0.2
Description : It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of ... 3.06 10 5 (B) 6.12 10 5 (C) 7.24 10 5 (D) 9.08 10
Last Answer : (A) 3.06 × 10
Description : Track structure for CC+8 t+ 2 t loaded trains is:- (a) 52 Kg 90 UTS;PSC 1540 sleepers/ Km.; 250 mm ballast. (b) 60 Kg 90 UTS;PSC 1660 sleepers/ Km.; 300 mm ballast.* (c) 52 Kg 72 UTS;PSC 1540 sleepers/ Km.; 300 mm ballast. (d) 90 R;PSC 1340 sleepers/ Km.; 250 mm ballast.
Last Answer : b) 60 Kg 90 UTS;PSC 1660 sleepers/ Km.; 300 mm ballast.*
Description : `50 mL` of `0.1 M` solution of a salt reacted with `25 mL` of `0.1 M` solution of sodium sulphite. The half reaction for the oxidation of sulphite ion
Last Answer : `50 mL` of `0.1 M` solution of a salt reacted with `25 mL` of `0.1 M` solution of sodium ... was `3`, what would be the new oxidation number of metal:
Description : A moist soil sample of volume 60 cc. weighs 108 g and its dried weight is 86.4 g. If its absolute density is 2.52, the degree of saturation is (A) 54 % (B) 64 % (C) 74 % (D) 84 %
Last Answer : (D) 84 %
Description : Listed below are four respiratory capacities (i-iv) and four jumbled respiratory volumes of a normal human adult. Respiratory Respiratory capacities volumes (i) Residual volume 2500 mL (ii) Vital capacity 3500 mL (iii)Inspiratory ... c) (iv) 3500 mL, (i) 1200 mL (d) (i) 4500 mL, (ii) 3500 mL
Last Answer : (c) (iv) 3500 mL, (i) 1200 mL
Description : Match the items given in column I with those in column II and select the correct option given below. Column I Column II (A) Tidal volume (i) 2500 - 3000 mL (B) Inspiratory reserve (ii) 1100 - 1200 mL volume (C) Expiratory reserve (iii ... i) (iv) (ii) (c) (i) (iv) (ii) (iii) (d) (iv) (iii) (ii) (i)
Last Answer : (b) (iii) (i) (iv) (ii)
Description : Tidal volume and expiratory reserve volume of an athlete is 500 mL and 1000 mL respectively. What will be his expiratory capacity if the residual volume is 1200 mL? (a) 2700 mL (b) 1500 mL (c) 1700 mL (d) 2200 mL
Last Answer : b) 1500 mL