**Description :** The number of moles of solute present in 1 kg of a solvent is called its (a) Molality (b) Molarity (c) Normality (d) Formality

**Last Answer :** Ans:(a)

**Description :** Moles of solute divided by kilograms of solvent is expression for: w) molarity x) solute-to-solution ratio y) mole percentage z) molality

**Last Answer :** ANSWER: Z -- MOLALITY

**Description :** Normality is defined as the number of: w) moles of solute per 1000 grams of solvent x) equivalent weights of solute per liter of solution y) kilograms of solute per liter of solution z) moles of solute per 1000 grams of solution

**Last Answer :** ANSWER: X -- EQUIVALENT WEIGHTS OF SOLUTE PER LITER OF SOLUTION

**Description :** Molality is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) gm (C) Kg (D) m

**Last Answer :** (C) Kg

**Description :** Molarity is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) kg (C) gm (D) c.c

**Last Answer :** (A) Litre

**Description :** Which of the following modes of expressing concentration is independent of temperature - (1) Molarity (2) Molality (3) Normality (4) Formality

**Last Answer :** (2) Molality

**Description :** One of the following ways of expressing the concentration of a solution does not depend on temperature. It is-----? A. Molarity B. Molality (Answer) C. Normality D. Formality

**Last Answer :** B. Molality (Answer)

**Description :** 2.5 liters of a sodium chloride (NaCl) solution contain 5 moles of the solute. What is the molarity? w) 5 molar x) 2 molar y) 2.5 molar z) 12.5 molar

**Last Answer :** ANSWER: X -- 2 MOLAR

**Last Answer :** : Molarity: The number of moles of dissolved solution per liter of a solution is called molarity of that solution. Molality: The number of moles of dissolved solution per solvent is called molality ... normal solution. The concentration of a normal solution is called normality. It is expressed by N.

**Description :** For a solution of volatile liquids, the partial vapour pressure of each component in solution is directly proportional to its (a) Molarity (b) Mole fraction (c) Molality (d) Normality

**Last Answer :** Ans:(b)

**Description :** One equivalent of a triprotic acid is the same as: w) one mole of the acid x) one-third mole of the acid y) three moles of the acid z) three equivalents of a diprotic acid

**Last Answer :** ANSWER: X -- ONE-THIRD MOLE OF THE ACID

**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 :** . In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is (A) 0.50 (B) 0.60 (C) 1 (D) 2

**Last Answer :** (A) 0.50

**Description :** An aqueous solution is always a solution in which the: w) solute is water x) solute is a salt y) solvent is a salt z) solvent is water

**Last Answer :** ANSWER: Z -- SOLVENT IS WATER

**Description :** When a solute is dissolved in a pure solvent, the resulting freezing point is: w) higher than pure solvent x) lower than pure solvent y) does not change z) cannot tell from this information

**Last Answer :** ANSWER: X -- LOWER THAN PURE SOLVENT

**Description :** Which of the following terms has as its definition: a mixture having continuous and dispersed phases? w) colloid x) solute y) suspension z) solvent

**Last Answer :** ANSWER: W -- COLLOID

**Description :** The rate at which dissolution occurs is LEAST dependent upon which one of the following factors: w) temperature x) pressure y) solution concentration z) solute surface area

**Last Answer :** ANSWER: X -- PRESSURE

**Description :** Why Molality has more benefits than Molarity ?

**Last Answer :** The volume of solution changes with temperature change. So the unit malarity of the volume-based solution varies. But the mass of the object does not change with increasing temperature. Therefore, the ... But the malarity of the solution changes. So the benefits of malality are more than malarity.

**Description :** Why does molality of a solution remain unchanged with change in temperature while its molarity changes?

**Last Answer :** Molality of a solution depends on the mass of solvent and man does not vary with change in temp. where as molarity depends on volume of solution and volume change with change in temp.

**Description :** The number of moles of solute present in 1 kg of a solvent is called its?

**Last Answer :** molality

**Description :** The individual mass transfer co-efficients (moles/m2s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of ... A) Liquid side (B) Gas side (C) Interfacial (D) Both liquid and gas side

**Last Answer :** (B) Gas side

**Description :** A dilute solution of `H_(2)SO_(4)` is made by adding 5 mL of `3N H_(2)SO_(4)` to 245 mL of water. Find the normality and molarity of the diluted solut

**Last Answer :** A dilute solution of `H_(2)SO_(4)` is made by adding 5 mL of `3N H_(2)SO_(4)` ... of water. Find the normality and molarity of the diluted solution.

**Description :** 20 gram of caustic soda are dissolved in water to prepare 500 ml of solution. Find the normality and molarity of solution.

**Last Answer :** Basis: 500 ml solution. Weight of solute = 20 gm Molecular weight of NaOH = 40 Gram moles of solute = 20/40 = 0.5 Molarity = Gram moles/ Volume of solution in lit 0.5/0.5 = 1 M Normality = gram equivalent of solute/ volume of solution in lit = 0.5/0.5 = 1N

**Description :** Number of gram equivalents of solute per liter of solution is called C A. Simple solution B. Molar solution C. Normal solution D. Molal solution

**Last Answer :** Normal solution

**Description :** Number of gram equivalents of solute per liter of solution is called C A. Simple solution B. Molar solution C. Normal solution D. Molal solution

**Last Answer :** Normal solution

**Description :** Number of gram equivalents of solute per liter of solution is called a. Normal solution b. Molar solution c. molal solution d. simple solution

**Last Answer :** Normal solution

**Description :** Molarity and Molality of a solution of an liquid (mol. Wt. = 50) in aqueous solution is 9 and 10 respectively. What is the density of solution ?

**Last Answer :** Molarity and Molality of a solution of an liquid (mol. Wt. = 50) in aqueous solution is 9 and 10 respectively. What ... /cc C. 1.05 g/cc D. 1.35 g/cc

**Description :** How are molarity and molality similar?

**Last Answer :** Both express moles of solute in the numerator.

**Description :** What is the different between molality and molarity?

**Last Answer :** The difference is in the denominators.Molarity (M) - the number of moles of solute divided by the number of liters of solution.Molality(m) - the number of moles of solute divided by the number of kilograms of solvent.

**Description :** What is the DeBroglie wavelength of a 1,200 kilogram corvette traveling at a rate of 25 meters per second? Planck's constant is equal to 6.62 x 10-34 Joule-seconds. w) 5.3 x 10-32 meters x) 5.9 x 10-34 meters y) 2.1 x 10-38 meters z) 1.6 x 10-40 meters

**Last Answer :** ANSWER: Y -- 2.1 x 10-38 METERS

**Description :** A 50 kilogram ice skater glides across the ice in a straight line at 7 meters per second. If she bends down and scoops up a 20 kilogram child standing on the ice, what will be the final speed of the skater ... w) 1 meter per second x) 3 meters per second y) 5 meters per second z) 7 meters per second

**Last Answer :** ANSWER: Y -- 5 METERS PER SECOND

**Description :** A two-stage rocket attains a velocity of 3,000 meters per second when it drops the first stage and ignites the second. It consumes 1 kilogram of fuel per second and its exhaust speed is 2,000 meters per second. ... ? w) 2,000 Newtons x) 3,000 Newtons y) 2,000 Newton-seconds z) 3,000 Newton-seconds

**Last Answer :** ANSWER: W -- 2,000 NEWTONS

**Description :** A 500 kilogram car moving at 20 meters per second strikes a stone wall and is brought to a halt in 0.1 second. The average force of the car on the wall during impact is: w) 10 Newtons x) 1000 Newtons y) 10,000 Newtons z) 100,000 Newtons

**Last Answer :** ANSWER: Z -- 100,000 NEWTONS

**Description :** A car with a mass of 1000 kilogram is moving at a speed of 10 meters per second. The kinetic energy of the car is: w) 100 Joules x) 5000 Joules y) 10,000 Joules z) 50,000 Joules

**Last Answer :** ANSWER: Z -- 50,000 JOULES

**Description :** Carlos is pulling a 40 kilogram cart with a horizontal force of 100 newtons. The force of friction on the cart is 20 newtons. The acceleration of the cart is: w) 2 meters per second squared x) 2.5 meters per second squared y) 20 meters per second squared z) 200 meters per second squared

**Last Answer :** ANSWER: W -- 2 METERS PER SECOND SQUARED

**Description :** When a 2 kilogram mass is suspended from a spring, the spring stretches 4 cm. The force constant of the spring is approximately:+ w) .5 newtons per meter x) 5 newtons per meter y) 50 newtons per meter z) 500 newtons per meter

**Last Answer :** ANSWER: Z -- 500 NEWTONS PER METER

**Description :** A spring with a force constant of 100 Newtons per meter is loaded with a mass of 1.0 kilogram. The period of vibration of this system is: w) .03 seconds x) .06 seconds y) .31 seconds z) .63 seconds

**Last Answer :** ANSWER: Z -- .63 SECONDS

**Description :** A girl throws a 0.1 kilogram ball at a wall. The ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces straight back with a velocity of 4 meters per second. The ... .4 kilogram-meters per second y) 0.5 kilogram-meters per second z) 0.9 kilogram-meters per second

**Last Answer :** ANSWER: Z -- 0.9 KILOGRAM-METERS PER SECOND

**Description :** As a 10 kilogram mass on the end of a spring passes through its equilibrium position, the kinetic energy of the mass is 20 joules. The speed of the mass is: w) 2.0 meters per second x) 4.0 meters per second y) 5.0 meters per second z) 6.3 meters per second

**Last Answer :** ANSWER: W -- 2.0 METERS PER SECOND

**Description :** An impulse of 10 kilogram-meter per second acting on an object whose mass is 5 kilogram will cause a change in the objects velocity of: w) 0.5 meters per second x) 2 meters per second y) 10 meters per second z) 50 meters per second

**Last Answer :** ANSWER: X -- 2 METERS PER SECOND

**Description :** A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the velocity of the mass is: w) 0 meters per second x) 0.5 meters per second y) 5 meters per second z) 50 meters per second

**Last Answer :** ANSWER: X -- 0.5 METERS PER SECOND

**Description :** A Newton is equal to which of the following? w) kilogram-meter per second x) meter per second squared y) kilogram-meter per second squared z) kilogram per meter-second

**Last Answer :** ANSWER: Y -- KILOGRAM-METER PER SECOND SQUARED

**Description :** pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

**Last Answer :** ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION

**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 :** Which of the following best completes the statement: The calorie is the amount of heat needed to raise: w) 1 gram of water 1 degree Celsius x) 1 gram of water 1 degree Rankin y) 1 kilogram of water 1 degree Celsius z) 1 kilogram of water 1 degree Kelvin

**Last Answer :** ANSWER: W -- 1 GRAM OF WATER 1 DEGREE CELSIUS

**Description :** Osmosis is a. movement of solvent across a semipermeable membrane from an area where the hydrostatic pressure is high to an area where the hydrostatic pressure is low b. movement of solute across a ... area in which it is in high concentration to an area in which it is in low concentration

**Last Answer :** movement of solvent across a semipermeable membrane from an area in which it is in high concentration to an area in which it is in low concentration

**Description :** Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial ... at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

**Last Answer :** (C) Azeotropes obey Raoult's law at all temperature

**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 :** In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas ... (C) Less than 1 kg of C is transferred to B (D) No amount of C is transferred to B

**Last Answer :** (A) The entire amount of C is transferred to solvent B

**Description :** The difference in the osmotic pressures of one molar solutions of different compounds in a given solvent at a given temperature results from? w) Different values for R x) Different values for Avogadro's number y) Ionization or dissociation z) None of the above

**Last Answer :** ANSWER: Y -- IONIZATION OR DISSOCIATION