Properties of a polymer is affected by the
(A) Chain length
(B) Intermolecular forces
(C) Both (A) and (B)
(D) None of these

1 Answer

Answer :

(C) Both (A) and (B)

Related questions

Description : Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their (A) Molecular sizes (B) Magnitude of intermolecular forces (C) Resistance to heat (D) Polymerisation mechanism

Last Answer : (B) Magnitude of intermolecular forces

Description : Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its (A) Tensile strength (B) Chemical resistance (C) Flexibility (D) All (A), (B) & (C)

Last Answer : (C) Flexibility

Description : Which of the following has the weakest intermolecular forces? (A) Polyisoprene (B) Nylon-66 (C) Polystyrene (D) Bakelite

Last Answer : (A) Polyisoprene

Description : Surface tension of a liquid (A) Is due to intermolecular forces of cohesion (B) Decreases with rise in temperature (C) Is responsible for the spherical shape of an isolated liquid drop (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Description : Using H2O, how can I explain the difference between intramolecular and intermolecular forces?

Last Answer : H2O is a polar covalent molecule. Polar covalent molecules occur when heterogeneous molecules occur between atoms of different electro-negativity (E.N.), which is a measure of how strongly an atom attracts a ... molecule and the δ- dipole (in this case O) of an adjacent molecule. Hope that helps.

Description : Name the types of intermolecular forces present in Ar, Cl2, CCl4 and HNO3.

Last Answer : Name the types of intermolecular forces present in Ar, Cl2, CCl4 and HNO3.

Description : Identify type of the intermolecular forces in the following compounds. a. CH3 – OH  b. CH2 = CH2 c. CHCl3

Last Answer : Identify type of the intermolecular forces in the following compounds. a. CH3 – OH b. CH2 = CH2 c. CHCl3 d. CH2Cl2

Description : Which of the following exhibits the weakest intermolecular forces?

Last Answer : Which of the following exhibits the weakest intermolecular forces? A. `H_(2)O` B. `NH_(3)` C. He D. HCl

Description : Intermolecular forces in liquid are :

Last Answer : Intermolecular forces in liquid are : a. greater than gases b. less than solids c. both a and b d. greater than solids

Description : What intermolecular forces are in O2?

Last Answer : The oxygen molecule has a covalent bond; the intermolecular forces are London dispersion forces.

Description : What type of intermolecular forces are in LiCl?

Last Answer : Lithium chloride form large lattices.

Description : What are the intermolecular forces in OCl2?

Last Answer : Feel Free to Answer

Description : What is the intermolecular forces in HBr?

Last Answer : These are dipole-dipole forces.

Description : What intermolecular forces are in phosgene Cl2CO?

Last Answer : Feel Free to Answer

Description : What are the intermolecular forces for CH3CH2OH?

Last Answer : Feel Free to Answer

Description : What intermolecular forces isp resent in Gatorade which is essential for the body?

Last Answer : Need answer

Description : What intermolecular forces exist in CH3OH?

Last Answer : Need answer

Description : What is the intermolecular forces in HBr?

Last Answer : These are dipole-dipole forces.

Description : What are the Intermolecular forces of 1-(2-propoxy2-methyl)-butane?

Last Answer : The intermolecular forces would be dispersion forces.

Description : What intermolecular forces are in cl2?

Last Answer : Dispersion

Description : What are the types of intermolecular forces in h2o?

Last Answer : It has dispersion forces, dipole dipole forces ,and hydrogen bonding. Source: I'm a chemistry professor

Description : Which of these substances exhibits the weakest intermolecular forces? (a) NH3 (b) H2O (c) He (d) HCI

Last Answer : Ans:(c)

Description : A drop of liquid assumes spherical shape because: (1) Intermolecular forces are strong in liquids (2) A sphere has the least surface area for a given volume (3) A sphere has the largest surface area for a given volume (4) Inter molecular forces are weak in liquids

Last Answer : (2) A sphere has the least surface area for a given volume Explanation: A drop of liquid assumes spherical shape because a sphere has the least surface area for a given volume.

Description : Explain the effect of increasing the temperature of a liquid, on intermolecular forces operating between its particles. What will happen to the viscosity of a liquid if its temperature is increased? Arrange the following in increasing order of viscosity-water, hexane, glycerine.

Last Answer : Ans. On increasing the temperature , the kinetic energy of liquid molecules increases so that it can overcome the attractive forces between the molecules and hence liquid can flow more easily i.e. viscosity decreases. Order of increasing viscosity : hexane < water < glycerine.

Description : Use the information and data given below to answer the questions Stronger intermolecular forces result in higher boiling point Strength of London forces increases with the number of electrons in the molecule ... here? (c) Why is the boiling point of HF highest while that of HCl lowest?

Last Answer : Ans :( a) In the molecules HCl, HBr and HI, dipole-dipole interaction and London forces are present. (b) Dipole moment of HCl > HBr > HI but boiling point of HCl < HBr

Description : Predict what will happen if intermolecular forces between the molecules are very weak

Last Answer : Ans. When intermolecular forces are very weak , molecules do not cling together t o make liquid and solid.

Description : Elaborate the statement that physical state of existence at given conditions is a balance between the thermal energy and intermolecular forces.

Last Answer : Ans. Intermolecular forces tend to keep the molecules together but thermal energy of the molecules tends to keep them apart. The three states of matter are the result of the balance between intermolecular forces and thermal energy of the molecules.

Description : Which type of intermolecular forces exists among the following molecules? (a) H2S molecules (b) H2O (c) Cl2 and CCl4 (d) SiH4 (e) Helium (f) He atoms and HCl molecules

Last Answer : Ans. (a) Dipole-Dipole interactions. (b)H-Bond. (c)Dispersion forces. (d)Dispersion forces. (e)Dispersion forces. (f)Induced dipole-dipole interactions.

Description : Which type of intermolecular forces are effected in each of the following process: (i)Sublimation of iodine. (ii)Evaporation of water.

Last Answer : Ans. (i) Sublimation of iodine : Dispersion forces. (ii)Evaporation of water : Hydrogen bond.

Description : Define (a) Dipole-Dipole Forces (b) Avogadro law (c) Intermolecular forces

Last Answer : Ans.(a) Dipole-dipole forces : The force of attraction which act between two molecules having permanent dipoles. (b) Avogadro Law : Equal volumes of all gases under the similar condition of ... . V α n (c) Intermolecular Forces: The forces of attractions and repulsion between interacting particles.

Description : Name two intermolecular forces that exist between HF molecules in liquid state.

Last Answer : Ans. Dipole-dipole interaction and hydrogen bonding.

Description : Define intermolecular forces. Also write down effect of intermolecular forces on melting points & boiling points of substances?

Last Answer : The forces of attraction present between the molecules of a compound are called Intermolecular forces''. Effect of intermolecular forces on the m.p and b.p of substances If intermolecular forces of attractions in ... . And if these forces are weak then the m.p and b.p will be relatively lower.

Description : Based on the intermolecular forces involved, which of the following molecules will have the lowest boiling point? w) ethane x) methyl alcohol y) methyl amine z) methyl fluoride

Last Answer : ANSWER: W -- ethane

Description : The boiling points of the halogens increase going from F2 to I2. What type of intermolecular forces are responsible for this trend? w) permanent dipole x) hydrogen bonding y) ion-ion attraction z) London dispersion forces

Last Answer : ANSWER: Z -- LONDON DISPERSION FORCES

Description : A drop of liquid assumes spherical shape because: (1) Intermolecular forces are strong in liquids (2) A sphere has the least surface area for a given volume (3) A sphere has the largest surface area for a given volume (4) Inter molecular forces are weak in liquids

Last Answer : A sphere has the least surface area for a given volume

Description : In nylon-6, the number 6 represents the total number of (A) Carbon atoms in the ring (B) Carbon atoms in the linear polymer chain (C) Nitrogen atoms in the ring (D) Hydrogen atoms in the ring

Last Answer : (B) Carbon atoms in the linear polymer chain

Description : . In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher (A) Densities (B) Melting point (C) Tensile strength (D) Hardness, rigidity & brittleness

Last Answer : (D) Hardness, rigidity & brittleness

Description : Cross linked polymers formed from bi-and trifunctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties. (A) Thermoplastic (B) Thermosetting (C) Elastometric (D) Brittleness

Last Answer : (C) Elastometric

Description : Arrange the following polymer in increasing order of their molecular forces : (a) nylon-6, 6, Buna-S, polythene. (b) nylon-6, Neoprene, polyvinyl chloride.

Last Answer : Ans. (a) Buna S < Polythene < Nylon-6, 6. (b) Neoprene < Polyvinyl Chloride < Nylon-6.

Description : What is elasticity in polymers generally related to amount of hydrogen bonding between different subunits number of subunits in the polymer chain its greater tensile strength the synthetic composure?

Last Answer : amount of hydrogen bonding between different subunitsnumber of subunits in the polymer chainits greater tensile strengththe synthetic composure

Description : DNA is (A) Usually present in tissues as a nucleo protein and cannot be separated from its protein component (B) A long chain polymer in which the internucleotide linkages are of the diester type between C-3 ... linkages are between C-2' and C-5' (D) Hydrolyzed by weal alkali (pH9 to 100°C)

Last Answer : Answer : B

Description : State the properties of liquid crystal polymer.

Last Answer : 1) They have high mechanical strength at high temperature. 2) They are extreme chemical resistance. 3) They have good weatherability. 4) They are inert. 5) They resist stress, cracking in the ... temperatures. 6) It has high coefficient of thermal expansion. 7) It is highly resistant to fire.

Description : Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C ... in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

Last Answer : (C) Enzymes help in increasing the activation energy of the reaction

Description : Steels with high carbon equivalent have poor Weldability, because in these steels during welding (A) Carbon and other alloying elements get oxidised from the weld pool (B) Excessive ferrite forms in the ... of carbon and other element occurs in the weld pool leading to poor properties of the weld

Last Answer : (C) Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld

Description : A consumer's buying decisions are affected in part by the people around him or her. These people and the forces they exert on a buyer are called 1. motivational influences 2. social factors 3. roles 4. personality influences 5. cultural influences

Last Answer : social factors

Description : Principle of superposition is applicable when (A) Deflections are linear functions of applied forces (B) Material obeys Hooke's law (C) The action of applied forces will be affected by small deformations of the structure (D) None of the above

Last Answer : (A) Deflections are linear functions of applied forces

Description : A consumer's buying decisions are affected in part by the people around him or her. These people and the forces they exert on a buyer are called A)motivational influences. B)social factors. C)roles. D)personality influences. E)cultural influences.

Last Answer : B)social factors.

Description : Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone. (A) Laminar (B) Transition (C) Both 'a' & 'b' (D) Highly turbulent

Last Answer : (D) Highly turbulent

Description : Jenkins is a small retail chain in South Wales. When considering changes in its marketing strategy, the firm's management looks only at changes in shopper attitudes and spending patterns. With ... )passive and proactive B)aggressive and proactive C)dominant and proactive D)passive and reactive

Last Answer : D)passive and reactive