What are the particles of matter always like according to molecular theory ?

What are the particles of matter always like according to molecular theory ?
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Answer :

According to molecular theory, the particles of matter are always moving.
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Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids (C) Particles movement from higher concentration to lower concentration takes place in diffusion process (D) According to Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids

Define the Kinetic Theory of matter & define states of matter on the basis of kinetic molecular theory.

Description : Define the Kinetic Theory of matter & define states of matter on the basis of kinetic molecular theory.

Last Answer : Ans : Kinetic Molecular Theory Of Matter : According to kinetic molecular theory the matter is composed of very tiny particles which are called molecules. The molecules of matter possess kinetic ... by the molecules are very high therefore gases have neither definite shape nor definite volume.

Which of the following statements is not one of the three basic assumptions of the kinetic theory? w) Matter is composed of very tiny particles. x) The particles of matter are in constant motion. y) The particles of matter lose energy in collisions.

Description : Which of the following statements is not one of the three basic assumptions of the kinetic theory? w) Matter is composed of very tiny particles. x) The particles of matter are in constant motion. y) The particles of matter lose energy in collisions. 

Last Answer : ANSWER: Y -- THE PARTICLES OF MATTER LOSE ENERGY IN COLLOSIONS 

According to the film theory of mass transfer, the mass transfer co￾efficient is proportional to (where, D = molecular diffusivity). (A) D (B) D2 (C) D0.5 (D) 1/D

Description : According to the film theory of mass transfer, the mass transfer co￾efficient is proportional to (where, D = molecular diffusivity). (A) D (B) D2 (C) D0.5 (D) 1/D

Last Answer : (A) D

According to the kinetic theory, the Kelvin temperature of an ideal gas is proportional to which one of the following. Is the temperature proportional to the gas's average molecular: w) velocity x) momentum y) kinetic energy z) potential energy

Description : According to the kinetic theory, the Kelvin temperature of an ideal gas is proportional to which one of the following. Is the temperature proportional to the gas's average molecular: w) velocity x) momentum y) kinetic energy z) potential energy

Last Answer : ANSWER: Y -- KINETIC ENERGY

What are the particles of matter always like ?

Description : What are the particles of matter always like ?

Last Answer : The particles of matter are always moving.

Pick out the wrong statement. (A) In a first order reaction, A → products; the reaction becomes slower as it proceeds, because the concentration of A decreases and the rate is proportional to the concentration of A (B) Transition state theory approaches the problem of calculating reaction rates by concentrating on the idea of activated complexes (C) According to the penetration theory, the mass transfer co-efficient decreases, if the exposure time of an eddy to the solute decreases (D) If the rate of an irreversible reaction, A + B → 2C is k.CA .CB , then the reaction is always elementary

Description : Pick out the wrong statement. (A) In a first order reaction, A → products; the reaction becomes slower as it proceeds, because the concentration of A decreases and the rate is proportional to the concentration ... irreversible reaction, A + B → 2C is k.CA .CB , then the reaction is always elementary

Last Answer : (C) According to the penetration theory, the mass transfer co-efficient decreases, if the exposure time of an eddy to the solute decreases

According to the theory of relativity, which of the following always remains constant ? (1) Length of an object (2) Time (3) Space (4) Velocity of light

Description : According to the theory of relativity, which of the following always remains constant ? (1) Length of an object (2) Time (3) Space (4) Velocity of light

Last Answer : Velocity of light

The movement of charged particles towards one of the electrodes under the influence of electrical current is (A) Gel filtration (B) Molecular sieving (C) Gas liquid chromatography (D) Electrophoresis

Description : The movement of charged particles towards one of the electrodes under the influence of electrical current is (A) Gel filtration (B) Molecular sieving (C) Gas liquid chromatography (D) Electrophoresis

Last Answer : Answer : D

In turbulent flow, the (A) Fluid particles move in an orderly manner (B) Momentum transfer is on molecular scale only (C) Shear stress is caused more effectively by cohesion than momentum transfer (D) Shear stresses are generally larger than in a similar laminar flow

Description : In turbulent flow, the (A) Fluid particles move in an orderly manner (B) Momentum transfer is on molecular scale only (C) Shear stress is caused more effectively by cohesion than momentum transfer (D) Shear stresses are generally larger than in a similar laminar flow

Last Answer : (D) Shear stresses are generally larger than in a similar laminar flow

What is the separation of colloidal particles from those of molecular dimensions called?

Description : What is the separation of colloidal particles from those of molecular dimensions called?

Last Answer : Dialysis

Which class of solids could have London Forces the attractive forces between particles in crystal lattice positions? w) ionic x) covalent y) metallic z) molecular

Description : Which class of solids could have London Forces the attractive forces between particles in crystal lattice positions? w) ionic x) covalent y) metallic z) molecular

Last Answer : ANSWER: Z -- MOLECULAR

In which state of matter is the least molecular force of attraction ?

Description : In which state of matter is the least molecular force of attraction ?

Last Answer : In the gaseous state the intermolecular force of attraction is less.

Which of the following options correctly explains the term heat budget? (1) It is a mode of transfer of heat through matter by molecular activity. (2) It is the balance between incoming and outgoing radiation. (3) It is the radiation from the earth in the form of long waves. (4) It is the amount of heat which the surface of earth receives from the sun.

Description : Which of the following options correctly explains the term heat budget? (1) It is a mode of transfer of heat through matter by molecular activity. (2) It is the balance between incoming and outgoing radiation. ... waves. (4) It is the amount of heat which the surface of earth receives from the sun.

Last Answer : (2) It is the balance between in-coming and outgoing radiation. Explanation: Incoming heat being absorbed by the Earth, and outgoing heat escaping the Earth in the form of radiation are both ... each passing year. This balance between incoming and outgoing heat is known as Earth's heat budget.

Which of the following options correctly explains the term heat budget? (1) It is a mode of transfer of heat through matter by molecular activity. (2) It is the balance between incoming and outgoing radiation (3) It is the radiation from the earth in the form of long waves. (4) It is the amount of heat which the surface of earth receives from the sun.

Description : Which of the following options correctly explains the term heat budget? (1) It is a mode of transfer of heat through matter by molecular activity. (2) It is the balance between incoming and outgoing radiation ... waves. (4) It is the amount of heat which the surface of earth receives from the sun.

Last Answer :  It is the balance between incoming and outgoing radiation

High quality crop soil requires humus as a major component. Which of the following best describes the composition of humus w) fine sand particles x) decaying organic matter y) mineral like clay matter z) chemical fertilizers

Description : High quality crop soil requires humus as a major component. Which of the following best describes the composition of humus w) fine sand particles x) decaying organic matter y) mineral like clay matter z) chemical fertilizers

Last Answer : ANSWER: X -- DECAYING ORGANIC MATTER 

What postulates of the kinetic molecular theory?

Description : What postulates of the kinetic molecular theory?

Last Answer : A gas is formed from extremely small particles in a permanent and randomless motion.

Account for the following properties of gases on the basis of kinetic molecular theory of gasesa) high compressibility b) gases occupy whole of the volume available to them.

Description : Account for the following properties of gases on the basis of kinetic molecular theory of gasesa) high compressibility b) gases occupy whole of the volume available to them.

Last Answer : Ans. a) High compressibility is due to large empty space between the gas molecules. b) Due to absence of attractive forces between the molecules, they can easily separate from one another.

Give salient features of Molecular orbital theory

Description : Give salient features of Molecular orbital theory

Last Answer : Ans (i) The electrons in a molecule are present in the various molecular orbitals as the electrons of atoms are present in the various atomic orbitals. (ii) The atomic orbitals of comparable ... in accordance with the aufbau principle obeying the Pauli's exclusion principle and the Hund's rule.

Using Weber’s molecular theory of magnetism, describe the polarity of the magnetic poles produced by stroking a magnetic material from right to left with the south pole of a magnet.

Description : Using Weber’s molecular theory of magnetism, describe the polarity of the magnetic poles produced by stroking a magnetic material from right to left with the south pole of a magnet.

Last Answer : South pole at the right, north pole at the left.

The theory of interionic attraction attributed to Debye and Hückel: w) was disproved by Arrhenius x) accounts quantitatively for the attraction between ions in dilute aqueous solutions y) does not account for kindered "ion-activity" z) accounts for intra-molecular polar bonds

Description : The theory of interionic attraction attributed to Debye and Hückel: w) was disproved by Arrhenius x) accounts quantitatively for the attraction between ions in dilute aqueous solutions y) does not account for kindered "ion-activity" z) accounts for intra-molecular polar bonds

Last Answer : ANSWER: X -- ACCOUNTS QUANTITATIVELY FOR THE ATTRACTION BETWEEN IONS IN DILUTE AQUEOUS SOLUTIONS

Explain Laplace’s molecular theory of liquid & hence define surface tension.

Description : Explain Laplace’s molecular theory of liquid & hence define surface tension. 

Last Answer : Consider three molecules A, B & C of the liquid. A sphere of influence is drawn as shown in fig.The sphere of influence of molecule A' is completely inside the liquid, so it ... surface of liquid is under constant tension due to the tendency to contract and occupy minimum surface area. 

The theory which ascribes wave-like properties to particles is called: w) general relativity x) quantum mechanics y) special relativity z) classical mechanics

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Let's say we have a fairly massive blackhole near-by which is causing havoc with the solar system. Suppose we have the technology, can we destroy it using a stream of anti-particles (i.e. anti-matter)?

Description : Let's say we have a fairly massive blackhole near-by which is causing havoc with the solar system. Suppose we have the technology, can we destroy it using a stream of anti-particles (i.e. anti-matter)?

Last Answer : i personally have doubts because we would need the same mass in antiparticles as the black hole is heavy

As the thermal energy of matter increases, its particles usually spread out, causing?

Description : As the thermal energy of matter increases, its particles usually spread out, causing?

Last Answer : thermal expansion.

In which state of matter are the particles farthest away ?

Description : In which state of matter are the particles farthest away ?

Last Answer : Particles are farthest away in the gaseous state.

What statement best supports the idea that matter is made up of particles?

Description : What statement best supports the idea that matter is made up of particles?

Last Answer : Need answer

Can matter be composed of many small particles called atoms?

Description : Can matter be composed of many small particles called atoms?

Last Answer : Yes, it is true.

What particles are all matter made of?

Description : What particles are all matter made of?

Last Answer : It might be quarks (plus leptons and a few other things) or it could be strings (à la string theory). But we don't know for sure, and that's why we're still looking for answers. What is the ultimate nature of matter? Links are provided.

What state of matter consists of particles in regular repeating three demensional patterns?

Description : What state of matter consists of particles in regular repeating three demensional patterns?

Last Answer : Feel Free to Answer

What state of matter consists of particles held together firmly but not rigidly?

Description : What state of matter consists of particles held together firmly but not rigidly?

Last Answer : Feel Free to Answer

What state of matter has particles that move very rapidly?

Description : What state of matter has particles that move very rapidly?

Last Answer : What is the answer ?

What state of matter has particles that can flow past each other?

Description : What state of matter has particles that can flow past each other?

Last Answer : All but solid.

In which state matter are particles packed very tightly together?

Description : In which state matter are particles packed very tightly together?

Last Answer : Solid !

What is a disk of matter that circles a planet and consist of numerous particles in orbit that range in size from a few millimeters to several hundred meters?

Description : What is a disk of matter that circles a planet and consist of numerous particles in orbit that range in size from a few millimeters to several hundred meters?

Last Answer : Planetary ring

Do Chemical reactions occur at the same rate no matter what the size of the reactant particles?

Description : Do Chemical reactions occur at the same rate no matter what the size of the reactant particles?

Last Answer : Need answer

What is a disk of matter that circles a planet and consist of numerous particles in orbit that range in size from a few millimeters to several hundred meters?

Description : What is a disk of matter that circles a planet and consist of numerous particles in orbit that range in size from a few millimeters to several hundred meters?

Last Answer : Planetary ring

In which state of matter are the particles the most spread out?

Description : In which state of matter are the particles the most spread out?

Last Answer : Gaseous.

All matter is made up of tiny particles called?

Description : All matter is made up of tiny particles called?

Last Answer : Atoms

When the temperature of matter decreases, the particles do what?

Description : When the temperature of matter decreases, the particles do what?

Last Answer : The particles move more rapidly

All matter, both living and nonliving, is made up of tiny particles called _______.?

Description : All matter, both living and nonliving, is made up of tiny particles called _______.?

Last Answer : Atoms

Consider the following statements. The role of the gravel bed in a rapid sand filter is : 1. To filter out large suspended matter 2. To support the sand bed above it 3. To prevent the escape of sand particles 4. To uniformly distribute the backwash water 5. To prevent algae growth Which of the following statements are correct ? a) 1, 2, 3, 4 and 5 b) 2, 3 and 4 only c) 3, 4 and 5 only d) 1, 2 and 3 only

Description : Consider the following statements. The role of the gravel bed in a rapid sand filter is : 1. To filter out large suspended matter 2. To support the sand bed above it 3. To prevent the escape of sand particles 4. To uniformly ... and 5 b) 2, 3 and 4 only c) 3, 4 and 5 only d) 1, 2 and 3 only

Last Answer : b) 2, 3 and 4 only

Name the Greek philosopher who first proposed the idea that matter was composed of small indivisible particles.

Description : Name the Greek philosopher who first proposed the idea that matter was composed of small indivisible particles. 

Last Answer : ANSWER: DEMOCRITUS

According to Avogadro’s law  A. the product of the gas constant and the molecular mass of an ideal gas is constant  B. the sum of partial pressure of the mixture of two gases is sum of the two  C. equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules  D. all of the above

Description : According to Avogadro's law  A. the product of the gas constant and the molecular mass of an ideal gas is constant  B. the sum of partial pressure of the mixture of two gases is sum of the ... all gases, at the same temperature and pressure, contain equal number of molecules  D. all of the above

Last Answer : Answer: C

According to Avogadro’s law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.  A. equal to  B. directly proportional to  C. inversely proportional to

Description : According to Avogadro’s law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.  A. equal to  B. directly proportional to  C. inversely proportional to

Last Answer : Answer: B

According to Avogadro’s law, for a given pressure and temperature, each molecule of a gas  (a) occupies volume proportional to its molecular weight  (b) occupies volume proportional to its specific weight  (c) occupies volume inversely proportional to its molecular weight  (d) occupies volume inversely proportional to its specific weight  (e) occupies same volume.

Description : According to Avogadro's law, for a given pressure and temperature, each molecule of a gas  (a) occupies volume proportional to its molecular weight  (b) occupies volume proportional to its specific ...  (d) occupies volume inversely proportional to its specific weight  (e) occupies same volume.

Last Answer : Answer : e

According to Avogadro’s Hypothesis  (a) the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature  (b) the sum of partial pressure of mixture of two gases is sum of the two  (c) product of the gas constant and the molecular weight of an ideal gas is constant  (d) gases have two values of specific heat  (e) all systems can be regarded as closed systems.

Description : According to Avogadro's Hypothesis  (a) the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature  (b) the sum of partial pressure of ... gases have two values of specific heat  (e) all systems can be regarded as closed systems.

Last Answer : Answer : a

According to Dalton’s law, the total pres sure of the mixture of gases is equal to  (a) greater of the partial pressures of all  (b) average of the partial pressures of all  (c) sum of the partial pressures of all  (d) sum of the partial pressures of all divided by average molecular weight  (e) atmospheric pressure.

Description : According to Dalton's law, the total pres sure of the mixture of gases is equal to  (a) greater of the partial pressures of all  (b) average of the partial pressures of all  (c) sum ... all  (d) sum of the partial pressures of all divided by average molecular weight  (e) atmospheric pressure.

Last Answer : Answer : c

Which theory states that the light wave behaves as if it consists of many tiny particles? a. Huygen’s theory b. Wave theory of light c. Nyquist theory d. Quantum theory

Description : Which theory states that the light wave behaves as if it consists of many tiny particles? a. Huygen’s theory b. Wave theory of light c. Nyquist theory d. Quantum theory

Last Answer : d. Quantum theory