Question:
The ------ is used to measure the volume of hygroscopic material.
The ------ is used to measure the volume of hygroscopic material.
Show Hint
Toluene is the standard liquid displacement medium in agricultural engineering to determine the true density and porosity of grains.
Updated On: Jul 10, 2026
- Benzene
- Toluene
- Distilled water
- Tap water
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Hygroscopic materials (such as grains, flours, and starches) absorb moisture when placed in contact with water.
Measuring their true volume via liquid displacement requires using a fluid that is not absorbed by the material.
Step 2: Detailed Explanation:
1. If distilled water or tap water is used, the hygroscopic material will absorb the water, causing swelling and resulting in inaccurate volume measurements.
2. Toluene is a non-polar organic solvent with low surface tension.
3. Because toluene does not penetrate or get absorbed into the cellular structure of agricultural grains and hygroscopic starches, it does not cause swelling.
4. This allows for precise volume measurement of seeds and grains using liquid displacement pycnometry.
Step 3: Final Answer:
Toluene is the solvent used to measure the volume of hygroscopic materials.
Was this answer helpful?
0
0
Top ICAR AIEEA Food Science and Technology Questions
- What is the typical bond angle between hydrogen and oxygen atoms in a water molecule?
- Which conditions are favorable for the formation of acrylamide in foods?
Match List-I with List-II.
List-I (Chemical Compound) List-II (Source) (A) Inulin (I) Acacia tree (B) Sodium Alginate (II) Red algae (C) Gum arabica (III) Chicory root (D) Carrageenan (IV) Brown algae Choose the correct answer from the options given below.
- Arrange the following HACCP principles in the correct sequence as per their implementation:
(A). Conduct a hazard analysis
(B). Establish critical control points (CCPs)
(C). Establish corrective actions
(D). Establish monitoring procedures
(E). Establish verification procedures
(F). Establish record-keeping and documentation procedures
Choose the correct answer from the options given below: - Which of the following flavonoids is incorrectly grouped with its food source?
(A). Naringin-Citrus
(B). Quercetin-Onion
(C). Kaempferol-Broccoli
(D). Genistein-Berries
Choose the correct answer from the options given below:
View More Questions
Top ICAR AIEEA Food Processing Questions
- How does nitrite curing helps in meat preservation?
- Given below are two statements:
Statement (I): Xanthan is commonly produced by the use of Xanthomonas campestris on D-glucose
Statement (II): Xanthan is used in the food industry as a stabilizer, emulsifier, thickener, suspending agent, bodying, and foam enhancer
In light of the above statements, choose the most appropriate answer from the options given below. - Which of the following is a commonly used anti-foaming agents in the food industry?
- The use of ---------- as a flour modifier is proposed in order to permit the extrusion of the dough, in making uncooked pasta.
- Proprietary bread made from a mixture of wheat and rye which has been allowed to sprout, kiln dried and rolled, to this is added barely malt is----------.
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions