10+ Innodata India Private Limited Interview Questions and Answers

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 standards that may apply include ASME B73.1 for chemical proc...read more

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 methods

• Describe the different types of valves used in chemical ...read more

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 understand MSDS before handling any hazardous material.

• MSDS has no...read more

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 selection is important for efficient operation and minimizing dow...read more

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 significant safety risks.

• For example, gasoline has an LEL of...read more

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

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 naturally in the atmosphere, leading to the formation of acid r...read more

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) or milligrams per liter (mg/L).

• High TDS levels can affect t...read more

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 scale divisions, the least count would be 0.1 mm.

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)