Mention the essential material (chemicals) to prepare soap in the laboratory. Describe in brief the test of determining the nature (acidic/alkaline) of the reaction mixture of saponification reaction. -Science

Mention the essential material (chemicals) to prepare soap in the laboratory. Describe in brief the test of determining the nature (acidic/alkaline) of the reaction mixture of saponification reaction. -Science
by

1 Answer

Answer :

Raw Materials Required For preparation of soap in laboratory are :Vegetable oilSodium HydroxideCommom salt Test to determine the nature of reaction mixture: When a red litmus paper is dipped in the reaction mixture, the paper changes its colour to blue. Hence, the reaction mixture of the saponification reaction is basic in nature.
by

Related questions

Pick up the correct statement from the following: (A) A soil having pH value more than 7 is an acidic soil (B) A soil having pH value less than 7 is an acidic soil (C) A soil having pH value more than 7 is an alkaline soil (D) A soil containing chemicals for the manufacture of Portland cement is preferred

Description : Pick up the correct statement from the following: (A) A soil having pH value more than 7 is an acidic soil (B) A soil having pH value less than 7 is an acidic soil (C) A soil ... more than 7 is an alkaline soil (D) A soil containing chemicals for the manufacture of Portland cement is preferred

Last Answer : Answer: Option B

Briefly describe the principle and function of a camera. Mention its essential parts along with brief comparison with an eye.

Description : Briefly describe the principle and function of a camera. Mention its essential parts along with brief comparison with an eye.

Last Answer : The most important tool of photography is the camera itself. Basically, a camera is a lighttight box with a lens on one side and light-sensitive film on the other. Parts: 1.camera box 2. ... change distance between lens & film in camera and change focal length of lens using ciliary muscles in eye.

Alkaline hydrolysis of oils (or fats) is called : (a) Saponification (b) Fermentation (c) Diazotization (d) Rancidification

Description : Alkaline hydrolysis of oils (or fats) is called : (a) Saponification (b) Fermentation (c) Diazotization (d) Rancidification

Last Answer : Saponification

Fresh sewage is __________ in nature. (A) Acidic (B) Neutral (C) Alkaline (D) Highly acidic

Description : Fresh sewage is __________ in nature. (A) Acidic (B) Neutral (C) Alkaline (D) Highly acidic

Last Answer : (C) Alkaline

The end products of saponification: (A) glycerol (B) acid (C) soap (D) Both (A) and (C)

Description : The end products of saponification: (A) glycerol (B) acid (C) soap (D) Both (A) and (C)

Last Answer : Answer : D

The process involved in making soap is (1) Saponification (2) Hydrolysis (3) Condensation (4) Polymerization

Description : The process involved in making soap is (1) Saponification (2) Hydrolysis (3) Condensation (4) Polymerization

Last Answer : (1) Saponification Explanation: Saponification is a process that produces soap, usually from fats and lye. In technical teens, saponification involves base (usually caustic soda NaOH) hydrolysis ... of a carboxylate. In addition to soap, such traditional saponification processes produces glycerol.

Saponification of a fat (a) always results in the formation of insoluble soaps (b) produces glycerol and soap (c) is used in the production of detergents (d) is used in the production of lactic acid

Description : Saponification of a fat (a) always results in the formation of insoluble soaps (b) produces glycerol and soap (c) is used in the production of detergents (d) is used in the production of lactic acid

Last Answer : produces glycerol and soap

Oils and fats are converted to soap in a process called (A) Hydrogenation (B) Esterification (C) Saponification (D) None of these

Description : Oils and fats are converted to soap in a process called (A) Hydrogenation (B) Esterification (C) Saponification (D) None of these

Last Answer : (C) Saponification

The process involved in making soap is (1) saponification (2) hydrolysis (3) condensation (4) polymerisation

Description : The process involved in making soap is (1) saponification (2) hydrolysis (3) condensation (4) polymerisation

Last Answer : saponification

Which of the following is acidic in nature? a) Apple juice b) Soap solution c) Slaked lime d) Lime

Description : Which of the following is acidic in nature? a) Apple juice b) Soap solution c) Slaked lime d) Lime

Last Answer : a) Apple juice

Wrought iron is a suitable material of construction for handling __________ solutions(A) Dilute acidic(B) Concentrated acidic(C) Alkalis & alkaline(D) None of these

Description : Wrought iron is a suitable material of construction for handling __________ solutions (A) Dilute acidic (B) Concentrated acidic (C) Alkalis & alkaline (D) None of these

Last Answer : (C) Alkalis & alkaline

Wrought iron is a suitable material of construction for handling __________ solutions. (A) Dilute acidic (B) Concentrated acidic (C) Alkalis & alkaline (D) None of these

Description : Wrought iron is a suitable material of construction for handling __________ solutions. (A) Dilute acidic (B) Concentrated acidic (C) Alkalis & alkaline (D) None of these

Last Answer : (C) Alkalis & alkaline

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Description : A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Last Answer : (b) Alkaline

How are fossils formed? Describe, in brief, two methods of determining the age of fossils. -Biology

Description : How are fossils formed? Describe, in brief, two methods of determining the age of fossils. -Biology

Last Answer : When organisms die, their bodies decompose due to action of micro organisms. However, sometime the body or at least some parts of the body may be in such an environment that does not let it ... in deeper layers.By detecting the ratios of different isotopes of the same element in the fossil material.

When dealing with chemicals in the laboratory is not safe?

Description : When dealing with chemicals in the laboratory is not safe?

Last Answer : What is the answer ?

Reviewing the laboratory findings of the client, the nurse would found which findings are elevated? 1. White blood cell count 2. Total serum bilirubin 3. Alkaline phosphate 4. Red blood cell count 5. Cholesterol 6. Serum amylase A. 1, 2, and 3 B. 2, 3, and 4 C. 3, 5, and 6 D. 1, 2, and 6

Description : Reviewing the laboratory findings of the client, the nurse would found which findings are elevated? 1. White blood cell count 2. Total serum bilirubin 3. Alkaline phosphate 4. Red blood cell count 5. Cholesterol 6. Serum amylase A. 1, 2, and 3 B. 2, 3, and 4 C. 3, 5, and 6 D. 1, 2, and 6

Last Answer : A. 1, 2, and 3

The laboratory findings in Paget’s disease show: A. Elevated calcium, elevated phosphate, and elevated alkaline phosphate. B. Normal calcium, normal phosphate and elevated alkaline phosphate

Description : The laboratory findings in Paget’s disease show: A. Elevated calcium, elevated phosphate, and elevated alkaline phosphate. B. Normal calcium, normal phosphate and elevated alkaline phosphate

Last Answer : B. Normal calcium, normal phosphate and elevated alkaline phosphate

The external auditor should obtain a sufficient understanding of the internal audit function because a. The understanding of the internal audit function is an important substantive test to be performed by the external auditor. b. The audit programs, working papers, and reports of internal auditors may often be used as a substitute for the work of the external auditor's staff. c. The procedures performed by the internal audit staff may eliminate the external auditor's need for considering internal control. d. The work performed by internal auditors may be a factor in determining the nature, timing, and extent of the external auditor's procedures.

Description : The external auditor should obtain a sufficient understanding of the internal audit function because a. The understanding of the internal audit function is an important substantive test to be performed by ... factor in determining the nature, timing, and extent of the external auditor's procedures.

Last Answer : The work performed by internal auditors may be a factor in determining the nature, timing, and extent of the external auditor's procedures.

Detergents are _basically-Alkaline/ Acidic/Neutral?

Description : Detergents are _basically-Alkaline/ Acidic/Neutral?

Last Answer : Neutral (Detergents are the salts of strong acid and strong base. Hence their solution will be neutral)

The process of mixing up of salt and water resulting to form an acidic or alkaline solution known as?

Description : The process of mixing up of salt and water resulting to form an acidic or alkaline solution known as?

Last Answer : Hydrolysis

what kind of soil is treated with gypsum to make it suitable for cropping---? A. Alkaline (Answer) B. Acidic C. Waterlogged D. Soil with excessive clay content

Description : what kind of soil is treated with gypsum to make it suitable for cropping---? A. Alkaline (Answer) B. Acidic C. Waterlogged D. Soil with excessive clay content

Last Answer : A. Alkaline (Answer)

Sodium hydroxide is used (a) as an antacid (b) as a cleansing agent (c) in manufacturing of soap (d) in alkaline batteries

Description : Sodium hydroxide is used (a) as an antacid (b) as a cleansing agent (c) in manufacturing of soap (d) in alkaline batteries

Last Answer : (c) in manufacturing of soap

What type of soil is good for hydrangeas? Should the soil be more acidic or alkaline?

Description : What type of soil is good for hydrangeas? Should the soil be more acidic or alkaline?

Last Answer : Need Answer

does veronica prefer a acidic soil or alkaline?

Description : does veronica prefer a acidic soil or alkaline?

Last Answer : alkaline ph 7.0

Which of the following soil is most suited for tea plantation ? [UP PCS 2002] (a) acidic (b) alkaline (c) alluvial (d) regur

Description : Which of the following soil is most suited for tea plantation ? [UP PCS 2002] (a) acidic (b) alkaline (c) alluvial (d) regur

Last Answer : Ans: (a)

Riboflavin is heat stable in (A) Acidic medium (B) Alkaline medium (C) Neutral medium (D) Both (A) and (C)

Description : Riboflavin is heat stable in (A) Acidic medium (B) Alkaline medium (C) Neutral medium (D) Both (A) and (C)

Last Answer : Answer : D

Thiamin is heat stable in (A) Acidic medium (B) Alkaline medium (C) Both (A) and (B) (D) None of these

Description : Thiamin is heat stable in (A) Acidic medium (B) Alkaline medium (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

The amino acid exist as Zwitter ions when they are in (A) solid state (B) acidic solution (C) alkaline solution (D) neutral solution

Description : The amino acid exist as Zwitter ions when they are in (A) solid state (B) acidic solution (C) alkaline solution (D) neutral solution

Last Answer : Answer : D

Crude oil is sometimes termed sweet because it is – (1) sweet in taste due to dissolved sugars (2) mildly sweet due to low sulphur content (3) less acidic (4) less alkaline

Description : Crude oil is sometimes termed sweet because it is – (1) sweet in taste due to dissolved sugars (2) mildly sweet due to low sulphur content (3) less acidic (4) less alkaline

Last Answer : (2) mildly sweet due to low sulphur content Explanation: Crude oil is sometimes termed sweet amount of hydrogen sulphide and Carbon dioxide.

The poison of honey bee is : (1) Acidic (2) Alkaline (3) Saltish (4) Protein

Description : The poison of honey bee is : (1) Acidic (2) Alkaline (3) Saltish (4) Protein

Last Answer : (1) Acidic Explanation: A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacular it can mean a sting of a bee, wasp, hornet, or yellow ... deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur.

Gypsum is used for improvement of: (1) Alkaline soils (2) Saline soils (3) (3) Podsols (4) (4) Acidic soils

Description : Gypsum is used for improvement of: (1) Alkaline soils (2) Saline soils (3) (3) Podsols (4) (4) Acidic soils

Last Answer : (2) Saline soils Explanatioqn: Gypsum is calcium sulfate which is essential to the sustainability of most irrigated soils. Irrigated land eventually leads to sodieity and salinity unless extreme care is ... improves sodic (saline) soils by removing sodium from the soil and replacing it with calcium.

Bee sting contains - (1) An acidic liquid (2) asalt solution (3) an alkaline liquid (4) acorrosive liquid

Description : Bee sting contains - (1) An acidic liquid (2) asalt solution (3) an alkaline liquid (4) acorrosive liquid

Last Answer : (1) An acidic liquid Explanation: A bee sting is a sting from a bee (honey bee, bumblebee, sweat bee, etc.). Bee stings are acidic. So its effects can be neutralized with bicarbonate of soda or alkali and this reaction reduces the pain.

Drinking soda is – (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Description : Drinking soda is – (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Last Answer : (2) Acidic Explanation: A soft drink, coke, soda pop, fizzy drink, tonic, .seltzer, mineral, sparkling water or carbonated beverage) is a beverage that typically contains water (often, but not ... other ingredients. Soft drinks are called "soft" in contrast to "hard drinks" (alcoholic beverages).

Fresh sewage is generally A. Alkaline B. Acidic C. Highly decomposed D. A source of objectionable odour

Description : Fresh sewage is generally A. Alkaline B. Acidic C. Highly decomposed D. A source of objectionable odour

Last Answer : ANS: A

If the pH value of sewage is 7 A. It is acidic B. It is alkaline C. It is neutral D. None of these

Description : If the pH value of sewage is 7 A. It is acidic B. It is alkaline C. It is neutral D. None of these

Last Answer : ANS: C

Pick up the correct statement from the following: A. pH value indicates acidity and alkalinity of sewage B. In acidic sewage, the pH value is less than 7 C. In alkaline sewage, the pH value is more than 7 D. All the above

Description : Pick up the correct statement from the following: A. pH value indicates acidity and alkalinity of sewage B. In acidic sewage, the pH value is less than 7 C. In alkaline sewage, the pH value is more than 7 D. All the above

Last Answer : ANS: D

Light water' used as a coolant in nuclear reactor is nothing but (A) Ordinary water (B) Mildly acidic (pH = 6) water (C) Mildly alkaline (pH = 8) water (D) None of these

Description : Light water' used as a coolant in nuclear reactor is nothing but (A) Ordinary water (B) Mildly acidic (pH = 6) water (C) Mildly alkaline (pH = 8) water (D) None of these

Last Answer : (A) Ordinary water

In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to(a) action of gut microorganisms (b) presence of conversion factors in insect gut (c) alkaline pH of the insect gut (d) acidic pH of the insect gut.

Description : In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to (a) action of gut microorganisms (b) presence of conversion factors in insect gut (c) alkaline pH of the insect gut (d) acidic pH of the insect gut.

Last Answer : (c) alkaline pH of the insect gut

What triggers activation of protoxin to active toxin of Bacillus thuringiensis in bollworm? (a) Acidic pH of stomach (b) Body temperature (c) Moist surface of midgut (d) Alkaline pH of gut

Description : What triggers activation of protoxin to active toxin of Bacillus thuringiensis in bollworm? (a) Acidic pH of stomach (b) Body temperature (c) Moist surface of midgut (d) Alkaline pH of gut

Last Answer : (d) Alkaline pH of gut

Honey is (a) alkaline (b) basic after some days (c) acidic (d) neutral

Description : Honey is (a) alkaline (b) basic after some days (c) acidic (d) neutral

Last Answer : (c) acidic

Most house plants, except cacti, prefer a highly organic and a. Neutral growing medium b. Alkaline growing medium c. Acidic growing medium d. None of above

Description : Most house plants, except cacti, prefer a highly organic and a. Neutral growing medium b. Alkaline growing medium c. Acidic growing medium d. None of above

Last Answer : Acidic growing medium

Which type of soil is found near the canal banks ?(A) Acidic and alkaline (B) Acidic (C) Alkaline (D) None of these

Description : Which type of soil is found near the canal banks ?(A) Acidic and alkaline (B) Acidic (C) Alkaline (D) None of these

Last Answer : (C) Alkaline

Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the (A) Osmotic pressure of the soil water becomes less than that of the plant sap (B) Soil becomes too alkaline (C) Osmotic pressure of the soil water becomes higher than that of the plant sap (D) Soil becomes too acidic

Description : Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the (A) Osmotic pressure of the soil water becomes less than that of the plant sap (B) Soil ... pressure of the soil water becomes higher than that of the plant sap (D) Soil becomes too acidic

Last Answer : (C) Osmotic pressure of the soil water becomes higher than that of the plant sa

Rocks containing more than 65 % Sio2 are a. Neutral b. Acidic c. Alkaline d. Calcareous

Description : Rocks containing more than 65 % Sio2 are a. Neutral b. Acidic c. Alkaline d. Calcareous

Last Answer : b. Acidic

The manufacture of Kraft pulp is done by a/an __________ process.(A) Alkaline (B) Acidic (C) Neutral (D) None of these

Description : The manufacture of Kraft pulp is done by a/an __________ process. (A) Alkaline (B) Acidic (C) Neutral (D) None of these

Last Answer : (A) Alkaline

Water having pH value as 6, is (A) Alkaline (B) Acidic (C) Neutral (D) None of these

Description : Water having pH value as 6, is (A) Alkaline (B) Acidic (C) Neutral (D) None of these

Last Answer : (B) Acidic

If pH value of water is (A) 7 water it is said to be neutral (B) Less than 7 it is said to be acidic(C) More than 7 it is said to be alkaline (D) All the above

Description : If pH value of water is (A) 7 water it is said to be neutral (B) Less than 7 it is said to be acidic (C) More than 7 it is said to be alkaline (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) Copper pipes are highly resistant to acidic and alkaline water (B) Wrought iron pipes are lighter than cast iron pipes (C) Wrought iron pipes corrode quickly and are less durable (D) All the above

Description : Pick up the correct statement from the following:  (A) Copper pipes are highly resistant to acidic and alkaline water  (B) Wrought iron pipes are lighter than cast iron pipes  (C) Wrought iron pipes corrode quickly and are less durable  (D) All the above

Last Answer : (D) All the above

Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution (A) A1is more alkaline than solution A2 (B) A1is highly acidic (C) A2is very slightly acidic (D) Both (B) & (C)

Description : Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution (A) A1is more alkaline than solution A2 (B) A1is highly acidic (C) A2is very slightly acidic (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)