RRB JE 2019 Exam - Shift 1
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Questions and Answers

What is the efficiency of worker P if they can complete a task in 12 days?

  • 1/24
  • 1/12 (correct)
  • 1/16
  • 1/48

Which of the following is considered the richest source of Vitamin C?

  • Milk
  • Lemon (correct)
  • Pulses
  • Red meat

What is solder primarily composed of?

  • Lead and tin (correct)
  • Copper and aluminum
  • Copper and tin
  • Iron and lead

If the efficiency of Q is given as 1/16, how many days does Q take to complete a work?

<p>16 days (C)</p> Signup and view all the answers

How many days will it take for three workers with efficiencies of 1/12, 1/16, and 1/24 to complete a task together?

<p>12 days (A)</p> Signup and view all the answers

The decimal part of any number is always _______.

<p>Less than 1 (A)</p> Signup and view all the answers

Which of the following options does NOT represent a worker's efficiency?

<p>2 days per work (C)</p> Signup and view all the answers

What is the time taken to complete the work by three workers whose efficiencies are 1/24, 1/16, and 1/12 respectively?

<p>5 days 8 hours (D)</p> Signup and view all the answers

Flashcards

Decimal Part

The part of a number that comes after the decimal point.

Efficiency

The efficiency of a person or machine is measured by the amount of work they can complete in a given time.

Solder

Solder is an alloy mainly used for joining metals together. It typically melts at lower temperatures than the joined metals.

Alloy

An alloy is a mixture of metals that is made to create specific properties. It combines the strengths of its components.

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What is the richest source of Vitamin C?

Vitamin C, also known as ascorbic acid, is a powerful antioxidant that helps boost the immune system. It is also important for skin health and collagen production.

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What is solder made of?

Lead and tin are the primary components of solder, often used in electronics and plumbing.

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Time * Efficiency = Work

The time required to complete a task multiplied by the efficiency is equal to the total work done.

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How to calculate efficiency?

The efficiency of a person or object is calculated by dividing the work completed by the time taken to complete it.

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Study Notes

RRB JE 2019 Exam - Shift 1

  • Decimal Part: The decimal part of any number is always less than 1.
  • Shaala ASMITA: The HRD Ministry's scheme for tracking academic performance of school children across India.
  • Postman's Journey: A postman's journey is described along with a diagram to determine the final distance from the post office.
  • Silver Article Tarnish: Silver articles turn black in the open air due to the formation of silver sulfide.
  • Series Completion: Numerical and alphabetical sequences are provided for completion.
  • Body's Dehydration: Sodium chloride is commonly lost by the body during dehydration.
  • Strong/Weak Acids and Alkalis: The pH range 4-5 indicates weak acids.
  • Largest Resistance: A 100Ω bulb has a higher resistance than a 60Ω bulb.
  • Rolling Thunder: Rolling thunder occurs due to successive reflections of sound.
  • Law of Octaves: The law of octaves was applicable up to the element calcium.
  • Strongest Material: Aerographene is believed to be the strongest material on Earth.
  • SONAR: Sound Navigation and Ranging is the full form of SONAR.
  • Eka-Boron: Scandium is considered the eka-boron.
  • Indian City: Jamshedpur is also known as Tatanagar.
  • Voluntary Retirement: The percentage of employees (men and women) who opt for voluntary retirement and the remaining employees in service.
  • Compound Interest: A problem calculates the difference between compound and simple interest on a particular sum.

RRB General Science Notes (Download PDF)

  • Lens Refraction: An object placed between infinity and the optical center of a concave lens forms a diminished image.
  • Mathematical Relationships: Various mathematical problems and expressions are given to calculate the result.

RRB GK Material (Download PDF)

  • President of India: Dr. Rajendra Prasad served the longest term as the President of India.
  • World Water Day Theme: The 2019 World Water Day theme was "Leave No One Behind."
  • Scientific Names: Modern man is scientifically known as Homo sapiens.

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Description

Test your knowledge with this RRB JE 2019 Shift 1 quiz. Covering topics from decimal parts and acid-base chemistry to sound phenomena and resistance in bulbs, this quiz is designed for aspiring engineers. Challenge yourself with a variety of questions relevant to the exam syllabus.

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