Western Coalfields Interview Questions and Answers

Q1. How many types of coal are there?
Ans. 
There are four main types of coal: anthracite, bituminous, subbituminous, and lignite.
• Anthracite is the highest rank of coal and is known for its high carbon content and low moisture and volatile matter.

• Bituminous coal is the most commonly used type and is known for its relatively high heat content.

• Subbituminous coal has a lower carbon content than bituminous coal and is commonly used for electricity generation.

• Lignite...read more
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Q2. How many types of gas are found in underground mins?
Ans. 
There are several types of gases found in underground mines, including methane, carbon monoxide, hydrogen sulfide, and nitrogen.
• Methane is the most common gas found in underground mines and is highly flammable.

• Carbon monoxide is a deadly gas that can be produced during mining operations.

• Hydrogen sulfide is another toxic gas that can be present in underground mines.

• Nitrogen is often used in mining operations to displace...read more
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Q3. What is mining?
Ans. 
Mining is the process of extracting valuable minerals or other geological materials from the earth.
• Mining involves drilling, blasting, and extracting minerals from the earth's surface or underground.

• It is essential for the production of various resources like coal, gold, copper, and diamonds.

• Mining can have environmental impacts such as habitat destruction and water pollution.

• Technological advancements have made mining...read more
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Q4. How many ways are there to come out in underground minse?
Ans. 
There are typically three ways to come out in underground mines: shaft, adit, and decline.
• Shaft: Vertical tunnel used for hoisting ore and personnel.

• Adit: Horizontal tunnel used for access to the mine.

• Decline: Inclined tunnel used for moving equipment and ore.

• Examples: The Lucky Friday Mine has a shaft entrance, the Goldstrike Mine has an adit entrance, and the Grasberg Mine has a decline entrance.
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Q1. No question.I am employee since 32 years old
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Q2. Performance based promotion In WCL
Ans. 
Performance based promotion in WCL is determined by employee's achievements and contributions.
• Promotions in WCL are based on employee's performance and accomplishments.

• Employees who consistently exceed expectations and demonstrate leadership qualities are considered for promotion.

• Performance evaluations, project outcomes, and feedback from supervisors are taken into account for promotions.

• For example, an employee who s...read more
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My assignment was as Mine manager since 2008

Q1. Infertility questions: how do you investigate female Infertility
Ans. Detailed medical and menstrual, obstetric history
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Q2. What is the important blood investigation in female infertility
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Q1. Whi h has more power four stroke or 2 stroke
Ans. 
It depends on the application and the specific engines being compared.
• In general, four-stroke engines are more fuel-efficient and have better low-end torque.

• Two-stroke engines are lighter and have a higher power-to-weight ratio.

• However, two-stroke engines tend to produce more emissions and require more maintenance.

• Ultimately, the power output of an engine depends on its design and intended use.

• For example, a high-perfo...read more
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