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TDS stands for Total Dissolved Solids, which measures the combined content of all inorganic and organic substances in water.
TDS is a measure of the total amount of dissolved solids in water, including minerals, salts, and organic matter.
Hard water has a high TDS level due to the presence of minerals like calcium and magnesium, while soft water has a lower TDS level.
TDS is typically measured in parts per million (ppm) o...
1 inch is equal to 25.4 millimeters.
1 inch = 25.4 mm
To convert inches to millimeters, multiply by 25.4
For example, 2 inches is equal to 50.8 millimeters (2 x 25.4)
The least count of a vernier caliper is the smallest measurement that can be read on the scale.
The least count is determined by the number of divisions on the main scale and the vernier scale.
It is calculated as the difference between one smallest division on the main scale and one division on the vernier scale.
For example, if the main scale has divisions of 1 mm and the vernier scale has 10 divisions that cover 9 main...
Types of reactors include pressurized water reactors, boiling water reactors, and gas-cooled reactors.
Pressurized water reactors use water as both coolant and moderator
Boiling water reactors use water as coolant and steam to drive turbines
Gas-cooled reactors use gas as coolant, such as carbon dioxide or helium
Panoli Intermediates India interview questions for popular designations
I applied via Walk-in and was interviewed before May 2023. There was 1 interview round.
I applied via Referral and was interviewed before Dec 2021. There were 2 interview rounds.
The question is about knowledge and experience in unit processes of chemical industry such as exothermic reactions, distillation, pump operation, valve types, production startup-shutdown process handling with MSDS.
Explain the process of exothermic reactions and how to handle them safely
Describe the distillation process and its importance in chemical industry
Explain the different types of pumps and their operating metho...
I am currently handling centrifugal pumps.
Centrifugal pumps are commonly used in industrial and commercial settings.
They work by converting rotational energy from a motor into kinetic energy to move fluid.
Examples of applications include water treatment, oil and gas production, and chemical processing.
Maintenance tasks include checking for leaks, monitoring vibration levels, and inspecting impellers.
Proper pump selecti...
API 610 and API 685 are the standards for process handling of centrifugal pumps.
API 610 is the standard for general-purpose centrifugal pumps used in the oil, gas, and petrochemical industries.
API 685 is the standard for sealless and magnetically driven centrifugal pumps used in hazardous and toxic applications.
Both standards cover design, materials, testing, and performance requirements for centrifugal pumps.
Other sta...
MSDS stands for Material Safety Data Sheet.
MSDS provides information about the hazards, handling, storage, and emergency procedures related to a particular material.
It is required by law for manufacturers and distributors to provide MSDS for hazardous materials.
MSDS includes information on the chemical composition, physical and chemical properties, and first aid measures.
It is important for workers to read and understa...
LEL stands for Lower Explosive Limit and UEL stands for Upper Explosive Limit.
LEL is the lowest concentration of a flammable substance in the air that can ignite and sustain combustion.
UEL is the highest concentration of a flammable substance in the air that can ignite and sustain combustion.
The range between LEL and UEL is known as the flammable range or explosive range.
Operating within the flammable range can pose si...
I applied via Company Website and was interviewed in Feb 2021. There were 3 interview rounds.
I applied via Referral and was interviewed before Mar 2020. There was 1 interview round.
Nitration is a chemical process of introducing a nitro group into an organic compound.
Nitration involves the substitution of a hydrogen atom in an organic compound with a nitro group (NO2).
It is commonly used in the production of explosives, dyes, and pharmaceuticals.
The process can be carried out using a variety of nitrating agents, such as nitric acid, nitric oxide, and nitrogen dioxide.
Nitration can also occur natur...
There are multiple ways to tackle column pressure depending on the situation.
Adjusting the column diameter or length
Changing the packing material
Modifying the flow rate or pressure
Using a different solvent or buffer
Optimizing the temperature and pH
Adding a guard column
Performing maintenance on the column
Replacing the column altogether
General problems in columns
Buckling due to excessive compression
Lateral torsional buckling due to bending
Shear failure due to excessive shear stress
Corrosion leading to reduced cross-sectional area
Excessive deflection due to inadequate stiffness
Cracking due to excessive tensile stress
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