Intertek QC Chemist Interview Questions and Answers

About cash & related work

Q1. Handling atm machine
Ans. 
Handling an ATM machine requires basic knowledge of its functions and safety precautions.
• Always cover the keypad when entering your PIN

• Be aware of your surroundings and avoid using the ATM at night or in secluded areas

• Check for any suspicious devices or people around the machine before using it

• If the machine appears to be tampered with or malfunctioning, do not use it and report it to the bank

• Remember to take your card...read more
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Work on daily basis assign

Q1. What are the different grades of material you have worked on
Ans. 
I have worked with various material grades including metals, plastics, and composites, ensuring quality and compliance.
• Metals: Worked with stainless steel (Grade 304, 316) for corrosion resistance in medical devices.

• Plastics: Experienced with high-density polyethylene (HDPE) for chemical resistance in packaging.

• Composites: Used carbon fiber reinforced polymers for lightweight structural applications in aerospace.

• Concre...read more
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Q2. What is material specification for piping, forgings fittings tubes fasteners for MS materials
Ans. 
Material specifications for piping, forgings, fittings, tubes, and fasteners for MS materials include ASTM standards and specific grades.
• ASTM A53/A53M - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

• ASTM A105/A105M - Standard Specification for Carbon Steel Forgings for Piping Applications

• ASTM A234/A234M - Standard Specification for Piping Fittings of Wrought Carbon Steel ...read more
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Q3. What is the difference between SS316 and SS304
Ans. 
SS316 has higher corrosion resistance and strength compared to SS304.
• SS316 contains molybdenum which enhances its corrosion resistance, while SS304 does not.

• SS316 is more suitable for use in harsh environments like marine applications, while SS304 is more commonly used in indoor settings.

• SS316 has higher tensile strength and creep strength than SS304.
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Q4. Difference between SS316L and SS316
Ans. 
SS316L has lower carbon content than SS316, making it more corrosion resistant and suitable for welding applications.
• SS316L has lower carbon content (0.03% max) compared to SS316 (0.08% max)

• SS316L is more corrosion resistant due to the lower carbon content

• SS316L is commonly used in welding applications where post-weld annealing is not possible

• SS316 is more commonly used in applications where higher strength is required
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Q5. Where do we refer the remaining chemical composition for SA-516 Gr. 70 plates
Ans. 
Refer to ASME Section II Part A for remaining chemical composition of SA-516 Gr. 70 plates
• Refer to ASME Section II Part A for detailed chemical composition

• Check the material test report (MTR) for specific chemical composition

• Consult with the manufacturer or supplier for any additional information
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Questions related to Standard reference, codes, welding and inspection

Q1. Typical fit questions
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Casestudy on market sizing

Q1. How to prepare 0.1 n hcl?
Ans. 
To prepare 0.1N HCl, dilute 8.3 mL of concentrated HCl to 1 liter with distilled water.
• Measure 8.3 mL of concentrated HCl using a graduated cylinder.

• Add the concentrated HCl to a 1 liter volumetric flask.

• Fill the flask with distilled water up to the 1 liter mark.

• Mix the solution thoroughly to ensure uniformity.

• The resulting solution will be 0.1N HCl.
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Q2. What is anode and cathod
Ans. 
Anode and cathode are electrodes used in electrochemical cells to facilitate the flow of electrons.
• Anode is the electrode where oxidation occurs and electrons are lost.

• Cathode is the electrode where reduction occurs and electrons are gained.

• In a battery, the anode is the negative terminal and the cathode is the positive terminal.

• In an electrolytic cell, the anode is the positive terminal and the cathode is the negative...read more
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Q3. What are haviour among h20 and hcl
Ans. 
H2O and HCl exhibit different behaviors due to their chemical properties.
• H2O is a polar molecule, while HCl is a polar covalent molecule.

• H2O has a higher boiling point and melting point than HCl.

• HCl is a strong acid, while H2O is a neutral molecule.

• H2O can act as a solvent for many substances, while HCl is mainly used in chemical reactions.

• H2O has a higher density than HCl.
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Q1. Basis on the recurement and you educational background.
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Q2. About your self about your study you are able to work
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Q1. About all the documents
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Q1. Chemical formula of various compound
Ans. 
Chemical formulas represent the types and numbers of atoms in a compound.
• Water - H2O

• Carbon dioxide - CO2

• Sodium chloride - NaCl
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Q2. Chemical reaction happend during the analysis
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Q1. About Quality testing procedures
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Q2. Regarding IS codes
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Q3. Regarding site inspection
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