Apprentice Trainee

100+ Apprentice Trainee Interview Questions and Answers

Updated 10 Feb 2025

Q51. Different between exhibit batch vs PPQ batches?

Ans.

Exhibit batches are used for stability studies and regulatory submissions, while PPQ batches are used for process validation.

  • Exhibit batches are manufactured for stability studies and regulatory submissions.

  • PPQ (Process Performance Qualification) batches are manufactured for process validation.

  • Exhibit batches are typically larger in size compared to PPQ batches.

  • Exhibit batches are used to demonstrate the product's stability over time.

  • PPQ batches are used to validate the manuf...read more

Q52. What is process of therosetting

Ans.

Thermosetting is a process in which a material undergoes a chemical change when heated, resulting in a permanent and irreversible solidification.

  • Thermosetting involves the cross-linking of polymer chains through a chemical reaction.

  • The process typically requires the application of heat and pressure.

  • Once thermosetting occurs, the material cannot be melted or reshaped.

  • Examples of thermosetting materials include epoxy resin, bakelite, and melamine.

Q53. Why natural is grounded in transformer

Ans.

Natural is grounded in transformer to ensure safety and prevent electrical shocks.

  • Grounding helps to divert any excess current to the earth, preventing damage to the transformer and other equipment.

  • It also helps to protect people from electrical shocks by providing a low-resistance path for the current to flow.

  • In case of a fault, the grounding system will trip the circuit breaker, isolating the transformer from the rest of the system.

  • For example, in a power substation, the tr...read more

Q54. What type of Breaker

Ans.

The type of breaker refers to the specific mechanism used to interrupt electrical currents in a circuit.

  • There are different types of breakers such as thermal-magnetic, magnetic, and hydraulic-magnetic.

  • Each type of breaker has its own unique way of detecting and interrupting electrical faults.

  • For example, a thermal-magnetic breaker uses both thermal and magnetic mechanisms to trip when an overload or short circuit occurs.

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Q55. What type of power line

Ans.

Different types of power lines are used for transmitting electricity over long distances.

  • There are overhead power lines, which are commonly seen along roads and highways.

  • Underground power lines are buried beneath the ground for aesthetic reasons or to avoid interference with other structures.

  • Submarine power lines are used to transmit electricity between islands or underwater.

  • High-voltage power lines are used for long-distance transmission of electricity.

  • Low-voltage power line...read more

Q56. What is partial pressure

Ans.

Partial pressure is the pressure exerted by a single gas in a mixture of gases.

  • Partial pressure is proportional to the mole fraction of the gas in the mixture.

  • It is calculated by multiplying the total pressure of the mixture by the mole fraction of the gas.

  • Each gas in a mixture contributes to the total pressure independently.

  • Dalton's law of partial pressures states that the total pressure of a gas mixture is equal to the sum of the partial pressures of each gas.

  • Partial pressu...read more

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Q57. How python language is interpreted language

Ans.

Python language is interpreted because it is executed line by line at runtime by the Python interpreter.

  • Python code is not compiled into machine code before execution

  • Python interpreter reads the code line by line and executes it immediately

  • This allows for easier debugging and dynamic typing

Q58. How many voltage power running in your home .

Ans.

The voltage power running in my home is typically 120 volts.

  • Standard voltage in most homes is 120 volts

  • Some appliances may require higher voltage, such as 240 volts for a dryer

  • Voltage can vary depending on location and electrical system

  • Voltage is measured in volts

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Q59. Sales journal how it's populated on books

Ans.

Sales journal is populated by recording all sales transactions in chronological order.

  • Sales journal is a chronological record of all sales transactions.

  • It includes details such as date, customer name, invoice number, and amount.

  • Sales are recorded in the journal as they occur, usually daily or weekly.

  • The journal is then used to post entries to the general ledger.

  • This helps to keep track of sales and ensure accuracy in financial reporting.

Q60. What's your understanding of Companies Act

Ans.

Companies Act is a legislation that governs the formation, operation, and dissolution of companies in India.

  • Companies Act was first enacted in 1956 and has been amended several times since then.

  • It defines the legal framework for the incorporation of companies, their management, and the rights and duties of shareholders.

  • The Act also lays down rules for the conduct of board meetings, appointment of directors, and the audit of company accounts.

  • It provides for the protection of t...read more

Q61. WHAT IS COD TDS TDS MLSS MLVSS ZLD ETC.

Ans.

COD, TDS, TDS, MLSS, MLVSS, ZLD, etc. are abbreviations used in various fields.

  • COD stands for Chemical Oxygen Demand and is a measure of the amount of oxygen required to oxidize organic and inorganic matter in water.

  • TDS stands for Total Dissolved Solids and refers to the total concentration of dissolved substances in water.

  • TDS can include minerals, salts, metals, and other substances.

  • MLSS stands for Mixed Liquor Suspended Solids and represents the concentration of suspended s...read more

Q62. What is ETP ,MEE ,RO ,STP principals

Ans.

ETP, MEE, RO, STP are principals related to wastewater treatment processes.

  • ETP stands for Effluent Treatment Plant, which is used to treat industrial wastewater before it is discharged into the environment.

  • MEE stands for Multiple Effect Evaporator, which is a thermal evaporation process used to concentrate wastewater by removing water through evaporation.

  • RO stands for Reverse Osmosis, which is a water purification process that uses a partially permeable membrane to remove ion...read more

Q63. What is full of ETP MEE RO STP ZLD EIA

Ans.

The answer to the question is 'WATER'.

  • The letters ETP, MEE, RO, STP, ZLD, and EIA are all related to different water treatment processes.

  • ETP stands for Effluent Treatment Plant, which is used to treat industrial wastewater.

  • MEE stands for Multiple Effect Evaporator, which is used to concentrate liquid waste.

  • RO stands for Reverse Osmosis, which is a water purification process.

  • STP stands for Sewage Treatment Plant, which is used to treat domestic wastewater.

  • ZLD stands for Zero L...read more

Q64. Diffrence between switch and amplifier

Ans.

Switch is used to connect multiple devices in a network and direct data packets, while amplifier is used to increase the strength of a signal.

  • Switch is a networking device that operates at the data link layer of the OSI model, while amplifier is an electronic device that increases the amplitude of a signal.

  • Switches are used to create networks and connect multiple devices, while amplifiers are used to boost the strength of signals in audio or radio transmissions.

  • Switches have ...read more

Q65. Explain the operation of diodes

Ans.

Diodes are electronic components that allow current to flow in one direction only.

  • Diodes have two terminals - an anode and a cathode.

  • When a diode is forward-biased, it allows current to flow through it.

  • When a diode is reverse-biased, it blocks the flow of current.

  • Diodes are commonly used in rectifiers, voltage regulators, and signal demodulation.

  • Examples of diodes include silicon diodes, Schottky diodes, and light-emitting diodes (LEDs).

Q66. What is comressor and how it's work

Ans.

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.

  • Compressors are commonly used in refrigeration and air conditioning systems.

  • They work by taking in low-pressure gas and compressing it to a higher pressure.

  • This compression process reduces the volume of the gas, resulting in an increase in pressure.

  • Compressors can be classified into positive displacement and dynamic types.

  • Positive displacement compressors use pistons, scrolls, or r...read more

Q67. What is the first law of gas laws?

Ans.

The first law of gas laws is Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume at a constant temperature.

  • Boyle's Law states that P1V1 = P2V2, where P represents pressure and V represents volume.

  • This law is based on the principle that as the volume of a gas decreases, the pressure increases, and vice versa.

  • Boyle's Law is commonly used in scuba diving to understand how changes in pressure affect the volume of gas in a diver's tank.

Q68. What is mcb??

Ans.

MCB stands for Miniature Circuit Breaker.

  • MCB is an electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

  • It automatically interrupts the flow of current when a fault is detected.

  • MCBs are commonly used in residential, commercial, and industrial applications.

  • They are more compact and efficient compared to traditional fuses.

  • Examples of MCB manufacturers include Schneider Electric, Siemens, and ABB.

Q69. What is your chemical

Ans.

My chemical knowledge includes understanding of various chemical compounds, reactions, and safety protocols.

  • I have a strong foundation in chemistry principles and concepts.

  • I am familiar with handling and storing chemicals safely.

  • I have experience in conducting experiments and analyzing results.

  • I am knowledgeable about different types of chemical reactions and their applications.

  • I am aware of the importance of following safety protocols and regulations in a laboratory setting.

Q70. What is your chemical uses

Ans.

My chemical uses include conducting experiments, analyzing data, and developing new products.

  • Conducting experiments to test the properties of different chemicals

  • Analyzing data to draw conclusions and make recommendations

  • Developing new products by combining chemicals in innovative ways

Q71. Single line diagram of power transmission

Ans.

Single line diagram is a simplified representation of power transmission system.

  • It shows the electrical components and their connections in a single line format

  • It is used to understand the flow of power and control signals in the system

  • It helps in identifying faults and troubleshooting

  • Example: A single line diagram of a substation shows the transformer, circuit breakers, and other equipment connected in a single line

  • Example: A single line diagram of a power plant shows the ge...read more

Q72. Transformar protection equipment name

Ans.

Transformar protection equipment name refers to changing the name of protective gear.

  • Research the current name of the protection equipment

  • Consider the purpose and function of the equipment

  • Consult with stakeholders for input on potential new names

  • Ensure the new name accurately reflects the purpose and features of the equipment

Q73. What is GMP and cGMP

Ans.

GMP stands for Good Manufacturing Practices, while cGMP stands for current Good Manufacturing Practices.

  • GMP is a set of guidelines and regulations that ensure the quality and safety of pharmaceutical products.

  • cGMP is an updated version of GMP that incorporates current industry standards and practices.

  • GMP and cGMP cover various aspects of manufacturing, including facilities, equipment, personnel, documentation, and quality control.

  • Adhering to GMP and cGMP is crucial for pharma...read more

Q74. What are different manufacturing processes.

Ans.

Different manufacturing processes include casting, machining, forming, and welding.

  • Casting: involves pouring molten material into a mold to create a solid object, such as metal casting.

  • Machining: uses cutting tools to remove material from a workpiece, like milling or turning.

  • Forming: reshapes materials through processes like bending, rolling, or extrusion.

  • Welding: joins materials together by melting and fusing them, like arc welding or spot welding.

Q75. What is Ideal gas law

Ans.

Ideal gas law is a fundamental law of physics that describes the behavior of gases under varying conditions.

  • It relates the pressure, volume, temperature, and number of particles of a gas.

  • The law is expressed as PV = nRT, where P is pressure, V is volume, n is the number of particles, R is the gas constant, and T is temperature.

  • The law assumes that the gas particles are in constant random motion and that there are no intermolecular forces between them.

  • The law is used in variou...read more

Q76. 2..Screw threads and pitch distance

Ans.

Screw threads and pitch distance

  • Screw threads are helical ridges on a cylindrical surface.

  • Pitch distance is the distance between two adjacent threads.

  • Threads can be classified as coarse or fine based on their pitch distance.

  • The pitch distance is measured in millimeters or inches.

  • The pitch distance determines the tightness of the fit between the screw and the nut.

  • Threads can be external or internal depending on whether they are on the outside or inside of the screw.

  • Examples of...read more

Q77. Type of convear and neem coted urea solution

Ans.

The type of conveyor used for transporting neem coated urea solution can vary depending on the specific requirements of the application.

  • Conveyors commonly used for transporting liquids include belt conveyors, screw conveyors, and pneumatic conveyors.

  • Neem coated urea solution may require a conveyor with special lining or material to prevent corrosion or contamination.

  • The choice of conveyor will depend on factors such as flow rate, distance of transport, and the properties of t...read more

Q78. What is transistors

Ans.

Transistors are semiconductor devices used to amplify or switch electronic signals and electrical power.

  • Transistors are fundamental building blocks of modern electronic devices.

  • They can amplify electrical signals, control the flow of current, and act as switches.

  • Transistors have three terminals: emitter, base, and collector.

  • Common types of transistors include bipolar junction transistors (BJTs) and field-effect transistors (FETs).

Q79. Debrief on Project 4th Year B.Pharm Antiplastic Agents

Ans.

Project 4th Year B.Pharm Antiplastic Agents

  • Researched and developed antiplastic agents for potential medical applications

  • Conducted experiments to test the efficacy and safety of the agents

  • Analyzed data and interpreted results to draw conclusions

  • Collaborated with team members to optimize the formulation of the agents

  • Presented findings and recommendations to faculty and peers

Q80. Flow measuring device. Unit of pressure, force,

Ans.

The unit of pressure is Pascal (Pa) and the unit of force is Newton (N).

  • Flow measuring devices include orifice plates, venturi tubes, and flow nozzles.

  • Pressure is measured in units of force per unit area.

  • Force is a vector quantity that can be measured using a force gauge or load cell.

  • In fluid mechanics, pressure is often used to calculate flow rate.

  • Examples of flow measuring devices include rotameters, magnetic flow meters, and ultrasonic flow meters.

Q81. What is omhs law and formula

Ans.

Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance.

  • Ohm's Law formula: V = I * R (Voltage = Current * Resistance)

  • Current (I) is measured in Amperes (A)

  • Voltage (V) is measured in Volts (V)

  • Resistance (R) is measured in Ohms (Ω)

  • Example: If a circuit has a voltage of 12V and a resistance of 4Ω, the current flowing through it would be 3A (I = V / R = 12V / 4Ω = 3A)

Q82. What is meaning of product quality.

Ans.

Product quality refers to the characteristics and attributes of a product that determine its ability to meet customer expectations and requirements.

  • Product quality is the measure of how well a product performs its intended function.

  • It includes factors such as reliability, durability, performance, safety, and customer satisfaction.

  • High product quality leads to customer loyalty, positive brand reputation, and increased sales.

  • Examples of product quality can be seen in the automo...read more

Q83. What is pharmaceutical sales ?

Ans.

Pharmaceutical sales involves promoting and selling prescription drugs to healthcare professionals.

  • Pharmaceutical sales representatives visit doctors, pharmacists, and other healthcare professionals to promote their company's products.

  • They provide information about the drugs' benefits, side effects, and dosages.

  • They may also organize educational events and sponsor medical conferences.

  • Pharmaceutical sales is a highly competitive field, with representatives often working on com...read more

Q84. What is fuse??

Ans.

A fuse is a safety device that protects electrical circuits from excessive current flow.

  • A fuse is made up of a metal wire or strip that melts when excessive current passes through it.

  • When the fuse melts, it breaks the circuit and prevents damage to the electrical components.

  • Fuses are commonly used in electrical systems to protect against short circuits and overloads.

  • Examples of fuses include glass tube fuses, blade fuses, and cartridge fuses.

Q85. Which tanks will fill fast drain fast

Ans.

Tanks with larger openings will fill and drain faster.

  • Tanks with wider openings will fill and drain faster due to increased flow rate

  • Tanks with higher water pressure will fill and drain faster

  • Examples: swimming pool with a large drain vs a small sink with a narrow drain

Q86. What is EIA, HAHARDOUS MANAGEMENT,

Ans.

EIA stands for Environmental Impact Assessment. Hazardous management refers to the process of identifying, assessing, and controlling hazards in order to prevent accidents and protect the environment.

  • EIA is a process used to evaluate the potential environmental impacts of a proposed project or development.

  • It involves identifying and assessing the potential impacts on various aspects such as air, water, land, and biodiversity.

  • EIA helps in decision-making by providing informati...read more

Q87. What are the data type in python

Ans.

Data types in Python include integers, floats, strings, lists, tuples, dictionaries, and booleans.

  • Integers are whole numbers without decimals (e.g. 5, -3)

  • Floats are numbers with decimals (e.g. 3.14, -0.5)

  • Strings are sequences of characters enclosed in quotes (e.g. 'hello', '123')

  • Lists are ordered collections of items (e.g. [1, 'apple', True])

  • Tuples are similar to lists but immutable (e.g. (1, 'banana', False))

  • Dictionaries are key-value pairs (e.g. {'name': 'Alice', 'age': 30}...read more

Q88. Importance of tyre in a vehicle?

Ans.

Tyres are crucial for a vehicle's performance, safety, and efficiency.

  • Provides traction for braking, accelerating, and cornering

  • Supports the vehicle's weight and maintains proper alignment

  • Affects fuel efficiency and overall driving comfort

  • Different types of tyres for various road conditions (e.g. all-season, winter, summer)

  • Regular maintenance and proper inflation are essential for longevity and safety

Q89. What are process in Cement making

Ans.

Cement making involves several processes including crushing, grinding, heating, and mixing raw materials to produce the final product.

  • Crushing: Raw materials like limestone, clay, and iron ore are crushed into small pieces.

  • Grinding: The crushed materials are then ground into a fine powder.

  • Heating: The powdered materials are heated in a kiln at high temperatures to form clinker.

  • Mixing: The clinker is mixed with gypsum and other additives to produce cement.

  • Packaging: The final ...read more

Q90. What are temperature measuring devices?

Ans.

Temperature measuring devices are tools used to measure the temperature of an object or environment.

  • Thermometer: a common device used to measure temperature

  • Infrared thermometer: measures temperature without contact

  • Thermocouple: measures temperature using two different metals

  • Thermal imaging camera: captures temperature variations in an image

Q91. What is Cleaning Validation?

Ans.

Cleaning validation is the process of ensuring that a cleaning procedure effectively removes residues from equipment used in the manufacturing process.

  • Cleaning validation is essential in industries such as pharmaceuticals, food and beverage, and cosmetics.

  • It involves establishing documented evidence that the cleaning process consistently removes residues to predetermined levels.

  • Validation typically includes developing a cleaning procedure, conducting cleaning trials, analyzin...read more

Q92. What is Film coating?

Ans.

Film coating is a process in which a thin layer of coating material is applied to a solid dosage form to improve appearance, taste, and stability.

  • Film coating helps protect the drug from moisture, light, and air

  • It can also mask the taste of the drug to improve patient compliance

  • Examples of film-coated tablets include Advil and Tylenol

Q93. What is Process Validation ?

Ans.

Process Validation is the documented evidence that a process consistently produces a product meeting its predetermined specifications and quality attributes.

  • Process Validation is a requirement in industries such as pharmaceuticals, medical devices, and food production.

  • It involves establishing documented evidence that a process is capable of consistently producing a product that meets its specifications.

  • Validation activities include process design, qualification, and ongoing m...read more

Q94. What is ETP STP MEE RO process

Ans.

ETP STP MEE RO process is a series of wastewater treatment processes used to remove pollutants from industrial and domestic wastewater.

  • ETP stands for Effluent Treatment Plant, which is used to treat industrial wastewater before it is discharged into the environment.

  • STP stands for Sewage Treatment Plant, which is used to treat domestic wastewater before it is released into rivers or oceans.

  • MEE stands for Multiple Effect Evaporation, which is a process used to concentrate waste...read more

Q95. Tell me about ac dc motor

Ans.

AC motors run on alternating current while DC motors run on direct current. AC motors are commonly used in household appliances and industrial machinery.

  • AC motors use alternating current to generate rotational motion

  • DC motors use direct current to generate rotational motion

  • AC motors are commonly used in household appliances like fans and refrigerators

  • DC motors are commonly used in tools and toys

Q96. Transformer group type?why

Ans.

Transformer group type refers to the way transformers are connected in a power system.

  • There are two types of transformer groups: Y (wye) and Delta

  • Y (wye) transformer group is used for step-down transformers

  • Delta transformer group is used for step-up transformers

  • The choice of transformer group depends on the voltage level of the power system and the required voltage transformation ratio

Q97. What is heat transfer coefficient

Ans.

Heat transfer coefficient is a measure of the ability of a material to conduct heat.

  • It is a measure of how easily heat can pass through a material.

  • Higher heat transfer coefficient means better heat conduction.

  • Common units include W/(m^2*K) or Btu/(hr*ft^2*°F).

Q98. Name of transformer in hindi language

Ans.

The name of transformer in Hindi language is 'ट्रांसफार्मर'.

  • The word 'transformer' is translated to 'ट्रांसफार्मर' in Hindi.

  • It is pronounced as 'traans-faar-mer' in Hindi.

  • In written form, it is represented as 'ट्रांसफार्मर'.

Q99. What is the full form of DCRM test

Ans.

DCRM test stands for Differential Color Response Measure test.

  • DCRM test is used to measure color vision deficiencies.

  • It is commonly used in the field of optometry and ophthalmology.

  • The test involves showing the individual a series of colored plates and asking them to identify the numbers or shapes hidden within them.

  • DCRM test helps in diagnosing conditions such as color blindness or color vision deficiencies.

Q100. Define Cmax & Tmax? What is AUC?

Ans.

Cmax is the maximum concentration of a drug in the bloodstream, while Tmax is the time it takes to reach Cmax. AUC is the area under the concentration-time curve.

  • Cmax is a pharmacokinetic parameter that measures the peak concentration of a drug in the bloodstream after administration.

  • Tmax is the time it takes for a drug to reach its maximum concentration in the bloodstream.

  • AUC is a pharmacokinetic parameter that measures the total exposure of a drug in the bloodstream over ti...read more

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