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Correct answer is (a) nR(T + 273)/p

The best explanation: The IDEAL GAS equation is given NYPV = not where p is pressure is the volume and is the NUMBER of MOLES are is universal gas constant and T is a temperature in Kelvin. So by arranging, we V = nR(T + 273)/p, as T is in CELCIUS, we need to add 273.

The correct choice is (C) 0.2

To explain I would say: The partial pressure of a gas equals the mole fraction of the gas in the gaseous mixture X the TOTAL pressure that is exerted by the gaseous mixture. So here 2 bar =MOLAR fraction x 10 bar, we get that the mole fraction is 2/10 = 0.2.

The correct choice is (a) 7 BAR

To explain: The total PRESSURE that is exerted is given by the SUM of the partial pressure of the gases present. By adding, the sum of the partial pressures is 3BAR + 4bar = 7bar, so the total pressure is 7 bar in this case.

The correct choice is (b) DALTON

The best I can EXPLAIN: Dalton PROPOSED law regarding the PARTIAL pressures, that the total pressure that is exerted by non-reactive gases is the sum of the individual gas’s partial pressures. Ptot = ∑Pi , i = 1, 2, 3, 4, … N.

The correct choice is (b) 0.8

For explanation: As we KNOW that the PARTIAL PRESSURE of a gas is the product of its mole FRACTION and the total pressure of the gases present,so here the partial pressure of hydrogen is 10/10 + 2.5 = 0.8. Mole fraction is given by the number of moles of REQUIRED as per the total number of the gas moles.

Right answer is (d) 3

The explanation: As we know that the pressure of the dry GAS is given by the difference between the total pressure and the AQUEOUS tension, so aqueous tension equals x + 3 – x = 3. So the aqueous tension is THREE units.

Correct option is (a) M = dRT/P

The explanation: We know that the IDEAL gas equation is given by PV = nRT. NUMBER of moles = n; can also be written as m/M, so PV = nRT becomes, PV = mRT/M. We also have density d = m/V, so molar mass M = dRT/P.

The correct ANSWER is (b) 44 degree Celsius

The best I can explain: According to Gay-Lussac’s law,at the constant volume, the pressure is directly PROPORTIONAL to the TEMPERATURE of gas so P1/P2 = T1/T2 that is 1.1 BAR/2.2 bar = 22 DEGREES Celsius/44 degree Celsius. So the temperature required is 44 degrees Celsius.

The correct option is (c) 224 liters

Easy explanation: As we know that the NUMBER of moles is proportional to the VOLUME as per Avogadro’s law and we also know that an IDEAL GAS at STP OCCUPIES 22.4 liters of volume. So here 10 moles of gas occupies 224 liters of volume.

Right option is (b) 3 liters

Explanation: As we KNOW that temperature is directly proportional to the VOLUME at constant pressure, 26/39 = 2/ X; so here by equating X equals to 3 liters. Hence required a volume of the BALLOON at 39 degrees is 3 liters.

Right answer is (b) 1 by 273^rd of the ORIGINAL volume of the gas

For EXPLANATION: According to Charles law, the volume of the fixed gas at constant pressure is directly PROPORTIONAL to the Absolute Temperature of the gas. So we thereby REPRESENT this as Vt = V0(1 + t/273) where Vt is the volume of the gas at temperature t and V0 is the volume of the gas at 0 degrees Celsius that is absolute temperature.

Right option is (c) 0.3 liters

Explanation: According to Boyle’s law at a constant temperature, the PRESSURE is inversely proportional to the temperature so here P1V1 is equaled to P1V2 by EQUATING P1V1 is equaled to 1 X 2.5 = 2.5, so the MAXIMUM volume of the ball that can be expanded is 2.5/0.12 =0.3 liters.

Correct option is (d) Hyperbola

To elaborate: Boyle’s law states that at constant TEMPERATURE pressure is INVERSELY PROPORTIONAL to the volume of gas so here the GRAPH between the pressure as y-axis volume as x-axis is in the shape of a hyperbola.

The CORRECT choice is (d) 2.5 liters

For explanation I would say: As we know that, Boyle’s law states at a constant temperature, the pressure of a gas is INVERSELY PROPORTIONAL to its volume so P1V1 equals to P2V2 by SUBSTITUTING P1 as one atmospheric pressure V1 as 5 liters P1 as to atmospheric pressure we get V2 as 5/2 that is 2.5 liters.

Right CHOICE is (b) two moles

Easy explanation: As we know that the number of moles of a gas is given by the amount of the SUBSTANCE in weight DIVIDED by the molecular weight of the substance. So in case of oxygen, it is 64 GRAMS divided by 32 grams and that is two moles.

The CORRECT choice is (a) 22.4 liters

The EXPLANATION: EVERY ONE Mole of gas at STP CONSISTS of 22.4 liters of volume, that is at 0° Celsius of temperature and one-atmosphere pressure or 76 mm of Mercury pressure. Also, note that one mole of a gas is the amount of gas in weight divided by the molecular weight of the gas.

Right answer is (d) too RAPID and random

The BEST explanation: A particle’s motion in the gaseous state is too rapid and random while in solids it’s RESTRICTED to vibratory motion and in liquids, it’s very slow. This is ONE of the very BASIC properties of substances in the gaseous state.

The correct option is (a) 78.09

To EXPLAIN: That composition of earth’s atmospheric gases is as follows; 78.09 percent of Nitrogen, 24.95 percent of oxygen, 0.93 percent of argon, 0.04 PERCENTAGE of carbon dioxide and a small AMOUNT of WATER vapor and other gases in the ATMOSPHERE.

The correct answer is (c) Hooks LAW

To explain: BOYLE’s law is about the RELATIONSHIP between PRESSURE and volume while Charles law about TEMPERATURE and volume. Gay lussac’s law is about pressure-temperature relationship & hooks law is a law that is in Physics relating to stress.

Correct choice is (c) Mercury

To EXPLAIN I WOULD say: Mercury is not a gas, it is a liquid in room TEMPERATURE and it is a metal. There are 11 gases which are gases at room temperature they are HYDROGEN, Nitrogen, Oxygen, fluorine, chlorine, Helium, Neon, Argon, KRYPTON, Xenon, and Radon.

Correct OPTION is (a) true

For explanation I WOULD say: As the forces of interaction between molecules of a gas is negligible when COMPARED with SOLIDS and gases. They mix properly because of higher THERMAL energy and lower intermolecular energy, so the above statement is true.

The correct answer is (d) HIGHER THERMAL energy

The best I can explain: In gases, there is less amount of INTERMOLECULAR energy and higher amount of thermal energy. As we KNOW that thermal energy separates some molecules from one another so gases have LOW density than that of solids and liquids.

Correct answer is (b) gases exert equal PRESSURE on each and every direction

The explanation is: The correct statement is that gases exert equal pressure on each and every direction. Among the given options the corrected statements of other options are that gases are highly compressible, they OCCUPY the SHAPE and volume of the CONTAINER as they have no fixed shape and volume and also that they have the least density among the three states of MATTER.

Correct option is (B) troposphere

To explain I WOULD say: It is the LOWEST layer of the earth’s ATMOSPHERE and is held to the earth by the gravitational force. It is very VITAL for human life and it protects us from harmful radiation. It contains important molecules like dioxygen, carbon dioxide, water vapor, etc.

Right option is (a) constant

The explanation: During the process of FREEZING the WATER, water converts into ICE that means new bonds are creating during this process and the temperature remains constant but the internal energy CHANGES during this phase.

The correct answer is (c) gases

To explain: Compressibility is high in the CASE of gases because thermal energy is predominant in gases. This energy enables the MOLECULES of gases to MOVE away from each other so that when compressed together they COMPRESS easily by reducing the distance between each other comparatively.

The CORRECT option is (b) Sublimation

Easy explanation: The process of direct conversion of solid to GASES is sublimation while the process of conversion of LIQUID to gas is evaporation whereas the process of conversion of solid to liquid is melting and liquid to solid is CONDENSATION.

Right answer is (b) INTERMOLECULAR ENERGY

The EXPLANATION is: In CASE of ice the molecules are tightly PACKED and we do know that in solid the intermolecular forces are so high that they are tightly packed so intermolecular energy is predominant in case of ice.

Right option is (d) 9

To EXPLAIN: The rise in temperature DEPICTS THERMAL energy. So among the given options at 82 degrees Celsius the milk has the highest thermal energy and at 9 degrees Celsius the milk has higher intermolecular energy. So at 9 degrees, the intermolecular FORCES are predominant than thermal energy in milk.

Right option is (b) thermal energy

The best explanation: In the case of the predominance of thermal energy, the gas is LIKELY to be FORMED RATHER than LIQUIDS and solids. This happens because the thermal energy tends to separate the molecules in a substance.

The correct answer is (b) false

Explanation: The above statement is false because GAS cannot be LIQUEFIED only through compression, even the temperature NEEDS to be lowered in order to COMPRESS the gas. This is because of the reaction of intermolecular forces and thermal energy between the molecules.

The CORRECT answer is (a) solid

To explain: When there is a PREDOMINANCE of intermolecular energy in the matter, the order of states of matter that are the likely to FORM is solids, liquids and then GASES. It follows reverse order in CASE of the predominance of thermal energy.