Hindusthan Speciality Chemicals Interview Questions and Answers

Q1. Technician question pump Gearbox etc
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Q2. Technical discuss question answer
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Q3. Technically question answer
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Q4. Industrial knowledge equipment
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Q1. Chemical Synthesis
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Q2. Chemi Al process
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Q1. Tell me about yourself
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Q1. What is centrifuge?
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A centrifuge is a machine that uses centrifugal force to separate substances of different densities or to remove moisture.
• Centrifuges are commonly used in laboratories to separate components of blood or other fluids.

• They work by spinning samples at high speeds, causing heavier particles to move towards the bottom of the tube.

• Centrifuges can also be used in industrial processes, such as separating oil from water in the
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Q2. What is crystallization
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Crystallization is the process of formation of solid crystals from a homogeneous solution.
• Crystals are formed when atoms or molecules arrange themselves in a repeating pattern.

• It involves the separation of solute particles from a solution to form a solid crystal.

• Crystallization is used in various industries such as pharmaceuticals, food processing, and chemical manufacturing.

• Examples include the formation of sugar crys...read more
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Q3. At which point crystal formation is more
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Crystal formation is more at the point of supersaturation, where the solution contains more solute than it can normally hold.
• Crystal formation is more likely when the solution is cooled slowly, allowing time for the molecules to arrange themselves into a crystal lattice.

• Higher concentrations of solute in the solution increase the chances of crystal formation.

• Impurities in the solution can act as nucleation sites, promo...read more
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Q4. What is distillation
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Distillation is a process of separating components of a liquid mixture based on differences in boiling points.
• Distillation involves heating the liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, leaving behind components with higher boiling points.

• Common examples of distillation include the production...read more
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Q5. What is difference between boiling point and fire point and flash point
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Boiling point is the temperature at which a liquid turns into vapor, fire point is the temperature at which a substance can ignite and sustain combustion, and flash point is the temperature at which a substance gives off enough vapor to ignite momentarily.
• Boiling point is the temperature at which a liquid changes into vapor by overcoming atmospheric pressure.

• Fire point is the temperature at which a substance can ignite...read more
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Q6. What is oxygen percentage is required in confined space?
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The required oxygen percentage in a confined space is typically between 19.5% and 23.5%.
• Oxygen percentage in a confined space should be maintained between 19.5% and 23.5% for safe working conditions.

• Levels below 19.5% can lead to hypoxia (oxygen deficiency) and levels above 23.5% can increase the risk of fire.

• It is important to regularly monitor and test the oxygen levels in confined spaces to ensure safety.

• Proper vent...read more
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Q1. About height work permit
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Q2. What is centrifugal force
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Centrifugal force is the outward force experienced by an object moving in a circular path.
• Centrifugal force is not a real force, but rather a perceived force due to inertia.

• It is the opposite of centripetal force, which is the inward force keeping an object in circular motion.

• Examples include the feeling of being pushed to the side in a car when it takes a sharp turn, or water being pushed outwards in a spinning bucket
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Q3. How long will you be here
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Q4. Why you want to change your job
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Q5. What is Permit system
Ans. 
A permit system is a formal process used to control and manage work activities in hazardous environments.
• Permit systems ensure that proper precautions are taken before work begins

• They typically involve obtaining written authorization to perform work

• Common types of permits include hot work permits, confined space permits, and electrical work permits
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B.sc.agriculture releted

Q1. Why are you quite your job
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Q1. Range of ph about ETP Sludge
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Q1. General idea of the company your are interviewing and have good knowledge of your subject
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Q1. Should have confidence why you want to switch and have knowledge of general interview Questions
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Q1. Salary Negotiation is very important. These all HR lie about the policies because these policies are on paper only
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