Allana Group of Companies QC Microbiologist Interview Questions and Answers

Technical round ask about instruments

Q1. Quality proses ERP confirmation
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Q2. Feed quality and structure ,feed size
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Q1. Asked about Basics of microbiology and techniques, Water analysis.
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Q1. How to check hardness of water, Tds, Nitrate, fluoride, Etc
Ans. 
Hardness of water, TDS, nitrate, fluoride, etc can be checked using various methods such as titration, spectrophotometry, and ion chromatography.
• Hardness of water can be checked using titration methods such as EDTA titration.

• TDS (Total Dissolved Solids) can be measured using a TDS meter or by gravimetric analysis.

• Nitrate levels can be determined using spectrophotometric methods.

• Fluoride content can be analyzed using io
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Q1. About lab chemist questions
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Q2. Preparation of Solutions
Ans. 
Preparation of solutions is a crucial task for a QC Chemist.
• Determine the required concentration and volume of the solution

• Select the appropriate solvent and solute

• Weigh the solute accurately and dissolve it in the solvent

• Adjust the pH and temperature if necessary

• Label the solution with the name, concentration, and date of preparation
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Q3. How to calculate moisture
Ans. 
Moisture can be calculated by measuring the weight loss of a sample after drying it at a specific temperature.
• Weigh the sample before drying

• Dry the sample at a specific temperature for a specific time

• Weigh the sample again after drying

• Calculate the weight loss as a percentage of the original weight

• Moisture content = (initial weight - final weight) / initial weight * 100%

• Use appropriate equipment and follow standard met
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Q4. How to make 0.1 N NaoH
Ans. 
To make 0.1 N NaOH, dissolve 4g of NaOH in 1L of distilled water.
• Calculate the molecular weight of NaOH (40g/mol)

• Weigh 4g of NaOH and dissolve it in distilled water

• Make up the volume to 1L with distilled water

• Stir the solution until the NaOH is completely dissolved

• Verify the concentration using a standard acid solution
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Q5. HCl how to make standerdigation
Ans. 
To make standard HCl solution, dilute concentrated HCl with distilled water to the desired concentration.
• Calculate the amount of concentrated HCl needed based on the desired concentration and volume of the final solution.

• Add the calculated amount of concentrated HCl to a volumetric flask.

• Fill the flask with distilled water up to the mark on the neck of the flask.

• Mix the solution thoroughly to ensure homogeneity.

• Verify ...read more
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