Signova Pharma Junior Chemist Interview Questions and Answers

Q1. Tell me about your self? My self explained
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Q2. Do you have any experience? I don't have
Ans. 
No, I don't have any experience.
• I am a recent graduate and have not yet had the opportunity to gain professional experience.

• However, I have completed several laboratory courses during my studies, where I gained hands-on experience with various chemical techniques and instruments.

• I am eager to apply my theoretical knowledge and learn from experienced chemists in a professional setting.
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Q1. What is preventive maintenance?
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Preventive maintenance is the practice of regularly inspecting, cleaning, and servicing equipment to prevent breakdowns and prolong its lifespan.
• Regularly inspecting equipment for signs of wear and tear

• Cleaning and lubricating moving parts

• Replacing worn out parts before they fail

• Scheduling routine maintenance tasks based on manufacturer recommendations

• Examples: changing the oil in a car every 5,000 miles, cleaning the
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Q2. Preventive maintenance
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Q1. What is preventive maintenance?
Ans. 
Preventive maintenance is the practice of regularly inspecting, cleaning, and servicing equipment to prevent breakdowns and prolong its lifespan.
• Regularly inspecting equipment for signs of wear and tear

• Cleaning and lubricating machinery to prevent corrosion and friction

• Replacing worn out parts before they fail

• Scheduling routine maintenance tasks based on manufacturer recommendations

• Examples: changing oil in a car, clea
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Depend upon role and designation assignment will be given

Q1. Na na na na
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Q2. Current role profile and bases
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Q1. How many parameters of HPLC Calibration ?
Ans. 
There are several parameters for HPLC calibration.
• The parameters include accuracy, precision, linearity, range, limit of detection, and limit of quantification.

• Accuracy refers to how close the measured value is to the true value.

• Precision refers to the reproducibility of results.

• Linearity refers to the ability of the method to produce results that are proportional to the concentration of the analyte.

• Range refers to the...read more
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Q2. What are the calibration parameters of UV Vis Spectrophometer?
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Calibration parameters of UV Vis Spectrophotometer
• Calibration parameters include wavelength accuracy, photometric accuracy, stray light, resolution, and noise.

• Wavelength accuracy is checked using holmium oxide or didymium glass filters.

• Photometric accuracy is checked using neutral density filters.

• Stray light is checked using potassium dichromate or sodium iodide solutions.

• Resolution is checked using holmium oxide or to...read more
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Q3. What is difference between weight of two samples after ignition of ROI?
Ans. 
Weight difference of two samples after ignition of ROI
• ROI stands for Residue on Ignition

• The weight difference is due to the loss of volatile substances during ignition

• The weight loss can be used to calculate the percentage of volatile substances in the sample

• This technique is commonly used in pharmaceutical and food industries
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Q4. What is IR region range?
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The IR region range refers to the range of wavelengths in the infrared region of the electromagnetic spectrum.
• The IR region range typically spans from approximately 700 nanometers to 1 millimeter.

• It is divided into three main regions: near-infrared (NIR), mid-infrared (MIR), and far-infrared (FIR).

• Each region has different applications and characteristics. For example, NIR is commonly used in remote controls and optica...read more
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Q5. What is the UV range?
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UV range refers to the range of ultraviolet radiation wavelengths.
• UV range is typically divided into three categories: UVA (320-400 nm), UVB (280-320 nm), and UVC (100-280 nm).

• UVA is responsible for skin aging and wrinkling, while UVB causes sunburn and skin cancer.

• UVC is absorbed by the ozone layer and does not reach the Earth's surface.

• UV radiation can also be used for disinfection and sterilization purposes.

• UV range...read more
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