31 Scalding with steam is more severe than scalding by boiling water because A. Steam can penetrate the skin B. Steam is at a higher temperature C. Steam contains more energy than boiling water D. Steam is at a higher pressure

 31 Scalding with steam is more severe than scalding by boiling water because A. Steam can penetrate the skin B. Steam is at a higher temperature C. Steam contains more energy than boiling water D. Steam is at a higher pressure
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Scalding with steam is more severe than scalding by boiling water because (a) steam can penetrate the skin (b) steam is at a higher temperature (c) steam contains more energy than boiling water (d) steam is at a higher pressure

Description : Scalding with steam is more severe than scalding by boiling water because (a) steam can penetrate the skin (b) steam is at a higher temperature (c) steam contains more energy than boiling water (d) steam is at a higher pressure

Last Answer : Ans:(c)

Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Description : Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Last Answer : (2) Steam has latent heat Explanation: When water changes into steam, it absorbs latent heat, and when steam condenses to form water, it gives out an equal amount of latent heat. Bums caused ... boiling water, simply because steam contains more heat (in the form of latent heat) than boiling water.

Burns caused by steam are much severe than those caused by boiling water because (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Description : Burns caused by steam are much severe than those caused by boiling water because (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Last Answer : Steam has latent heat

Burns caused by steam are much more severe than those caused by boiling water because

Description : Burns caused by steam are much more severe than those caused by boiling water because

Last Answer : Steam has latent heat

. A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of all the effects is -less than that in a single effect evaporator system (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect (C) Boiling point elevation in a single effect system is much higher than that in any effect in a multi-effect system (D) Heat transfer co-efficient in a single effect is much lower than that in any effect in a multi-effect system

Description : . A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of ... in a single effect is much lower than that in any effect in a multi-effect system

Last Answer : (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect

Why does steam cause more severe burns than boiling water?

Description : Why does steam cause more severe burns than boiling water?

Last Answer : Ans: The amount of heat (latent heat) possessed by steam is much greater than the amount of heat possessed by water at the same temperature. Therefore, steam causes more severe burns than boiling water

Which of the following produces more severe burns? (1) Boiling water (2) Hot water (3) Steam (4) Melting Iceberg

Description : Which of the following produces more severe burns? (1) Boiling water (2) Hot water (3) Steam (4) Melting Iceberg

Last Answer : (3) Steam Explanation: A burn is an injury to the body's tissue resulting from heat, chemicals, electricity or sunlight. Burns are often classified as first degree (those causing damage to the ... deepest and most severe damage destruction of all layers of the skin and damage to tissues underneath.

Which of the following produces more severe burns ? (1) Boiling water (2) Hot water (3) Steam (4) Melting iceberg

Description : Which of the following produces more severe burns ? (1) Boiling water (2) Hot water (3) Steam (4) Melting iceberg

Last Answer : Steam

steam distillation, the (A) Temperature is 100°C(B) Temperature is more than 100° C (C) Product must be immiscible with water (D) Temperature is higher than the boiling point of either component

Description : steam distillation, the (A) Temperature is 100°C(B) Temperature is more than 100° C (C) Product must be immiscible with water (D) Temperature is higher than the boiling point of either component

Last Answer : (C) Product must be immiscible with water

The temperature of boiling water in a steam engine may be high because - (1) there are dissolved substances in water (2) there is low pressure inside the boiler (3) there is high pressure inside the boiler (4) the lire is at very high temperature

Description : The temperature of boiling water in a steam engine may be high because - (1) there are dissolved substances in water (2) there is low pressure inside the boiler (3) there is high pressure inside the boiler (4) the lire is at very high temperature

Last Answer : (3) there is high pressure inside the boiler Explanation: In the boiler of a steam engine, there is a firebox where coal is shoveled into. The coal is kept burning at a very high temperature, and ... reservoir; the steam is then controlled by a slide valve to move into a cylinder to push the piston.

Steam distillation is not recommended to be used, if the (A) Azeotropic mixture is to be separated and the final product is miscible with water (B) Liquids decompose, if distilled directly at atmospheric pressure (C) Material cannot be distilled by indirect heating even under low pressure, because of the high boiling temperature (D) Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature

Description : Steam distillation is not recommended to be used, if the (A) Azeotropic mixture is to be separated and the final product is miscible with water (B) Liquids decompose, if ... unstable or has the tendency to react with other components associated with it, at the boiling temperature

Last Answer : (A) Azeotropic mixture is to be separated and the final product is miscible with water

The temperature of boiling water in a steam engine may be high because : (1) there are dissolved substances in water (2) there is low pressure inside the boiler (3) there is high pressure inside the boiler (4) the fire is at very high temperature

Description : The temperature of boiling water in a steam engine may be high because : (1) there are dissolved substances in water (2) there is low pressure inside the boiler (3) there is high pressure inside the boiler (4) the fire is at very high temperature

Last Answer :  there is high pressure inside the boiler

Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation (B) Cavitation may be caused due to boiling of liquid by decreasing the pressure resulting in formation & collapse of vapor cavities (C) Cavitation begins at higher static pressure and lower velocity in larger diameter pipelines resulting in audible noise(D) Large scale cavitation cannot damage pipeline, restrict fluid flow anddamage steam turbine blades

Description : Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation ... (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Last Answer : (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Description : Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Last Answer : (3) higher temperature is attained for cooking Explanation: In pressure cooker boiling point of water increases due to high pressure.

Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Description : Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor

Last Answer : higher temperature is attained for cooking 

What is a hink pink for scalding cauldron?

Description : What is a hink pink for scalding cauldron?

Last Answer : hot pot

The temperature of boiling water in a steam engine may be high because :

Description : The temperature of boiling water in a steam engine may be high because :

Last Answer : there is high pressure inside the boiler

In a Rankine cycle, regeneration results in higher efficiency because (a) Pressure inside the boiler increases [GATE-2003] (b) Heat is added before steam enters the low pressure turbine (c) Average temperature of heat addition in the boiler increases (d) Total work delivered by the turbine increases

Description : In a Rankine cycle, regeneration results in higher efficiency because (a) Pressure inside the boiler increases [GATE-2003] (b) Heat is added before steam enters the low pressure turbine (c) ... temperature of heat addition in the boiler increases (d) Total work delivered by the turbine increases 

Last Answer : (c) Average temperature of heat addition in the boiler increases  

The actual temperature drop across the heating surface of an evaporator depends on the (A) Liquid depth over the heating surface (B) Solution being evaporated (C) Pressure difference between the steam chest and the vapor space above the boiling liquid (D) All (A), (B) and (C)

Description : The actual temperature drop across the heating surface of an evaporator depends on the (A) Liquid depth over the heating surface (B) Solution being evaporated (C) Pressure difference between the steam chest and the vapor space above the boiling liquid (D) All (A), (B) and (C)

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

Steam at 100°C causes more severe burns than water at 100° C because – (1) steam has no specific heat capacity (2) steam has latent heat of vaporization (3) water has no specific heat capacity (4) water has latent heat of fusion

Description : Steam at 100°C causes more severe burns than water at 100° C because – (1) steam has no specific heat capacity (2) steam has latent heat of vaporization (3) water has no specific heat capacity (4) water has latent heat of fusion

Last Answer : (2) steam has latent heat of vaporization Explanation: It is because steam releases its latent heat as it condenses, which is substantial. The heat of vaporization of steam is over 2000 J per gram. And when it releases that it's then 100 degree water, the same as boiling water.

Steam at 1000C causes more severe burns than water at 100° C because (1) steam has no specific heat capacity (2) steam has latent heat of vaporisation (3) water has no specific heat capacity (4) water has latent heat of fusion

Description : Steam at 1000C causes more severe burns than water at 100° C because (1) steam has no specific heat capacity (2) steam has latent heat of vaporisation (3) water has no specific heat capacity (4) water has latent heat of fusion

Last Answer :  steam has latent heat of vaporisation

Steam distillation is used for separation of high boiling (A) Substances from non-volatile impurities (B) Volatile impurity from still higher boiling substances (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Steam distillation is used for separation of high boiling (A) Substances from non-volatile impurities (B) Volatile impurity from still higher boiling substances (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

How much time does a mosquito take to penetrate the human skin?

Description : How much time does a mosquito take to penetrate the human skin?

Last Answer : From being bitten thousands of times I would say less than a second.

Assertion : Ancylostoma duodenale is odd world hook worm. Reason : Humans are infected when filariform larvae in the mosit soil penetrate the skin, us

Description : Assertion : Ancylostoma duodenale is odd world hook worm. Reason : Humans are infected when filariform larvae in the mosit soil penetrate the skin, us

Last Answer : Assertion : Ancylostoma duodenale is odd world hook worm. Reason : Humans are infected when filariform ... D. If both Assertion and Reason are false.

Each of the following statements concerning hookworm infection is correct EXCEPT: D A. Hookworm infection is caused by Necator americanus. B. Hookworm infection can cause anemia. C. Hookworm infection is acquired by humans when filariform larvae penetrate the skin. D. Hookworm infection can be diagnosed by finding the trophozoite in the stool

Description : Each of the following statements concerning hookworm infection is correct EXCEPT: D A. Hookworm infection is caused by Necator americanus. B. Hookworm infection can cause anemia. C. Hookworm infection is ... the skin. D. Hookworm infection can be diagnosed by finding the trophozoite in the stool

Last Answer : Hookworm infection can be diagnosed by finding the trophozoite in the stool

Pick out the wrong statement. (A) Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty (B) Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis (C) Application of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables (D) Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis

Description : Pick out the wrong statement. (A) Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty (B) Large ... vegetables (D) Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis

Last Answer : (C) Application of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables

The boiling point of water decreases at higher altitudes is due to – (1) low temperature (2) low atmospheric pressure (3) high temperature (4) high atmospheric pressure

Description : The boiling point of water decreases at higher altitudes is due to – (1) low temperature (2) low atmospheric pressure (3) high temperature (4) high atmospheric pressure

Last Answer : (2) low atmospheric pressure Explanation: At higher altitudes, the air pressure is decreased, which forces water's boiling point to lower. The air pressure decreases with altitude because of the ... of air. The lowered boiling point of water requires an increase in cooking times or temperature.

The boiling point of water decreases at higher altitudes is due to (1) low temperature (2) low atmospheric pressure (3) high temprature (4) high atmospheric pressure

Description : The boiling point of water decreases at higher altitudes is due to (1) low temperature (2) low atmospheric pressure (3) high temprature (4) high atmospheric pressure

Last Answer : low atmospheric pressure

31. Replacement of steam based hot water generation by solar system is an example of a) Matching energy usage to the requirement b) Maximising system efficiency c) Energy substitution d) Performance improvement

Description : Replacement of steam based hot water generation by solar system is an example of a) Matching energy usage to the requirement b) Maximising system efficiency c) Energy substitution d) Performance improvement

Last Answer : Energy substitution

Why is it easier to cook in a pressure cooker? (a) High pressure creates turbulence (b) More steam is formed inside the cooker (c) Boiling point of water is raised (d) Boiling point of water is lowered

Description : Why is it easier to cook in a pressure cooker? (a) High pressure creates turbulence (b) More steam is formed inside the cooker (c) Boiling point of water is raised (d) Boiling point of water is lowered

Last Answer : Ans:(c)

Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of(A) Thermal cracking(B) Gum formation(C) Coking(D) Discoloration

Description : Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of (A) Thermal cracking (B) Gum formation (C) Coking (D) Discoloration

Last Answer : (C) Coking

The efficiency of superheat Rankine cycle is higher than that of simple Rankine cycle because [GATE-2002] (a) The enthalpy of main steam is higher for superheat cycle (b) The mean temperature of heat addition is higher for superheat cycle (c) The temperature of steam in the condenser is high (d) The quality of stem in the condenser is low

Description : The efficiency of superheat Rankine cycle is higher than that of simple Rankine cycle because [GATE-2002] (a) The enthalpy of main steam is higher for superheat cycle (b) The mean temperature of heat ... temperature of steam in the condenser is high (d) The quality of stem in the condenser is low 

Last Answer :  (b) The mean temperature of heat addition is higher for superheat cycle  

Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure. Nitrobenzene will distil off __________ °C. (A) At < 100 (B) At > 210.6 (C) Between 100 and 210 (D) None of these

Description : Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure. Nitrobenzene will distil off __________ °C. (A) At < 100 (B) At > 210.6 (C) Between 100 and 210 (D) None of these

Last Answer : (A) At < 100

Pick out the wrong statement: (A) The capacity of an evaporator is reduced by the boiling point elevation (B) Corrosive liquid is normally passed through the tubes in a shell and tube heat exchanger (C) Steam jet ejector is used for vapor compression in a thermal recompression evaporator (D) Heat sensitive materials should be concentrated in high pressure evaporators

Description : Pick out the wrong statement: (A) The capacity of an evaporator is reduced by the boiling point elevation (B) Corrosive liquid is normally passed through the tubes in a ... recompression evaporator (D) Heat sensitive materials should be concentrated in high pressure evaporators

Last Answer : (D) Heat sensitive materials should be concentrated in high pressure evaporators

Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2 .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the (A) Higher condensing film co-efficient is desired (B) Condensate is corrosive in nature (C) Lower pressure drop through the exchanger is desired (D) Temperature of the incoming vapor is very high Answer: Option B

Description : Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2 .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat ... drop through the exchanger is desired (D) Temperature of the incoming vapor is very high

Last Answer : (B) Supersaturated

Haploids are more suitable for mutation studies than the diploids. This is because (a) haploids are more abundant in nature than diploids (b) all mutations, whether dominant or recessive are expressed in haploids (c) haploids are reproductively more stable than diploids (d) mutagens penetrate in haploids more effectively than in diploids.

Description : Haploids are more suitable for mutation studies than the diploids. This is because (a) haploids are more abundant in nature than diploids (b) all mutations, whether dominant or recessive ... more stable than diploids (d) mutagens penetrate in haploids more effectively than in diploids.

Last Answer : (b) all mutations, whether dominant or recessive are expressed in haploids

Explain ,why an organic liquid vapourises at a temperature below its boiling point in steam distillation?

Description : Explain ,why an organic liquid vapourises at a temperature below its boiling point in steam distillation?

Last Answer : Because for boiling to occur vapour pressure of organic compound & steam should be equal to atmospheric pressure. As vapour pressure of water is higher than organic liquid. Therefore, organic liquid vaporizes at a temperature below its boiling point in steam distillation .

Pick out the wrong statement. (A) Economy of a multiple effect evaporator is not influenced by the boiling point elevation (B) Two identical cubes of iron and copper will have the same heat content under the same conditions of temperature (C) Double pipe heat exchangers are mostly used in the field of refrigeration (D) Finned tube heat exchangers are suitable for heating air by steam

Description : Pick out the wrong statement. (A) Economy of a multiple effect evaporator is not influenced by the boiling point elevation (B) Two identical cubes of iron and copper will have the same heat ... in the field of refrigeration (D) Finned tube heat exchangers are suitable for heating air by steam

Last Answer : (B) Two identical cubes of iron and copper will have the same heat content under the same conditions of temperature

Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at 35°C (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C (C) Boiling brine kept in open vessel when the bottom surface temperature of the vessel is maintained constant at 180°C (D) A sub-cooled refrigerant liquid at 8°C flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C

Description : Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at ... flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C

Last Answer : (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C

White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Description : White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Last Answer : (2) reflect all the light that reaches them Explanation: The coolness and warmth associated with clothes is because of their reflective or absorptive capacities. White clothes are good reflectors of light, thereby keeping the body cool. The opposite is the case with black clothes.

White clothes are cooler than black ones because they (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Description : White clothes are cooler than black ones because they (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Last Answer : reflect all the light that reaches them

Answer: b, c The body contains fuel reserves which it can mobilize and utilize during times of starvation or stress. By far the greatest energy component is fat, which is calorically dense since it provides about 9 calories/gram. Body protein comprises the next largest mass of utilizable energy, but amino acids yield only about 4 kcal/gram. Unlike fat reserves, body protein is not a storage form of energy but rather serves as a structural functional component of the body; loss of body protein, if severe, is associated with functional consequences. Glycogen stored in muscle and liver and free glucose have a trivial caloric value of less than 1000 kcal for a 70 kg male

Description : Answer: b, c The body contains fuel reserves which it can mobilize and utilize during times of starvation or stress. By far the greatest energy component is fat, which is calorically dense since it ... liver and free glucose have a trivial caloric value of less than 1000 kcal for a 70 kg male

Last Answer : Which of the following statement(s) is/are true concerning the indications and administration of nutritional support to cancer patients? a. Preoperative nutritional support should be provided to all ... total parenteral nutrition solutions maintain integrity of the small bowel e. None of the above

Gram negative organisms are largely insensitive to benzyl penicillin because (a) They produce large quantities of penicillinase (b) They do not utilize D-alanine whose incorporation in the cell wall is inhibited by benzyl penicillin (c) Benzyl penicillin is not able to penetrate deeper into the lipoprotein-peptidoglycan multiplayer cell wall of gram-negative bacteria (d) Both (a) and (b)

Description : Gram negative organisms are largely insensitive to benzyl penicillin because (a) They produce large quantities of penicillinase (b) They do not utilize D-alanine whose incorporation in the cell wall is ... lipoprotein-peptidoglycan multiplayer cell wall of gram-negative bacteria (d) Both (a) and (b)

Last Answer : Ans: C

Sulfamethoxypyridazine and other related long acting sulfonamides have now gone into disuse because (a) They have produced serious cutaneous reactions (b) They have produced high incidence of crystalluria (c) They interact with many drugs (d) They do not penetrate blood-brain barrier

Description : Sulfamethoxypyridazine and other related long acting sulfonamides have now gone into disuse because (a) They have produced serious cutaneous reactions (b) They have produced high incidence of crystalluria (c) They interact with many drugs (d) They do not penetrate blood-brain barrier

Last Answer : Ans: A

The growth of seedling plants after transplantation will not always be proper because (a) New soil may not contain the required minerals (b) During transplantation root hairs get damaged (c) Roots cannot penetrate deep into the soil (d) Of all factors stated above

Description : The growth of seedling plants after transplantation will not always be proper because (a) New soil may not contain the required minerals (b) During transplantation root hairs get damaged (c) Roots cannot penetrate deep into the soil (d) Of all factors stated above

Last Answer : Ans:(d)

Radio channels are attractive medium because __________ a) Can penetrate walls b) Connectivity can be given to mobile user c) Can carry signals for long distance d) All of the mentioned

Description : Radio channels are attractive medium because __________ a) Can penetrate walls b) Connectivity can be given to mobile user c) Can carry signals for long distance d) All of the mentioned

Last Answer : d) All of the mentioned

VLFwaves are used forsome type ofservices because a. of the low powers required b. the transmitting antennas are of convenient size c. they are very reliable d. the penetrate the ionosphere easily

Description : VLFwaves are used forsome type ofservices because a. of the low powers required b. the transmitting antennas are of convenient size c. they are very reliable d. the penetrate the ionosphere easily

Last Answer : c. they are very reliable

Gram negative organisms are largely insensitive to benzyl penicillin because: A. They produce large quantities of penicillinase B. They do not utilise D-alanine whose incorporation in the cell wall is inhibited by benzylpenicillin C. Benzyl penicillin is not able to penetrate deeper into the lipoprotein-peptidoglycan multilayer cell wall of gram negative bacteria D. Both ‘A’ and ‘B’ are correct

Description : Gram negative organisms are largely insensitive to benzyl penicillin because: A. They produce large quantities of penicillinase B. They do not utilise D-alanine whose incorporation in the cell wall is inhibited ... multilayer cell wall of gram negative bacteria D. Both A' and B' are correct

Last Answer : . Benzyl penicillin is not able to penetrate deeper into the lipoprotein-peptidoglycan multilayer cell wall of gram negative bacteria