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Free Junior Lab Assistant Mock Test

Test your knowledge under timed conditions. Get scored results instantly — no sign-up required.

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Questions
15
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Time Limit
115 min
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Format
Multiple Choice

Instructions

  • Answer all 15 questions within 115 minutes.
  • You can skip questions and come back to them later.
  • The timer starts when you click “Start Mock Test”.
  • Your score will be shown immediately after submission.
  • Sign up free to see detailed rationales for every answer.

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About This Mock Test

The Junior Lab Assistant Free Mock Test is designed to help candidates prepare effectively for the Junior Lab Assistant exam. This mock test focuses on assessing your knowledge and skills in key areas relevant to the role, ensuring you are well-prepared to meet the exam requirements. By practicing with this test, you can familiarize yourself with the exam format and improve your confidence.

Exam Pattern

  • Duration: 115 minutes
  • Number of Questions: 15
  • Difficulty Level: Medium
  • Passing Percentage: 75%

Topics Covered

  • Basic Laboratory Techniques

Why Take This Mock Test?

  • Gain a clear understanding of the Junior Lab Assistant exam structure and question types.
  • Identify your strengths and areas for improvement in Basic Laboratory Techniques.
  • Enhance your time management skills by practicing under exam-like conditions.
  • Boost your confidence and readiness to achieve a passing score of 75% or higher.

Take the Junior Lab Assistant Free Mock Test now to evaluate your preparation and increase your chances of success in the actual exam.

📋 Preview All 15 Mock Test Questions

Q1. A laboratory assistant finds a container labeled with a skull and crossbones symbol. What is the best immediate action to take before handling the chemical?

  1. Wear appropriate personal protective equipment (PPE) and read the safety data sheet (SDS)
  2. Open the container to check the chemical's smell
  3. Store the container near flammable chemicals for quick access
  4. Ignore the symbol if the container is sealed

Q2. A laboratory assistant finds a container labeled with a skull and crossbones symbol. What immediate safety action should they take before handling the chemical?

  1. Wear appropriate personal protective equipment (PPE) and handle with extreme caution
  2. Store the container in direct sunlight to neutralize it
  3. Dilute the chemical with water before use
  4. Ignore the symbol and proceed as usual

Q3. Which hazard symbol indicates that a chemical is corrosive and can cause damage to skin and metals?

  1. Flammable
  2. Corrosive
  3. Toxic
  4. Explosive

Q4. Compare the toxic substance symbol with the corrosive substance symbol. Which of the following statements is true?

  1. Both symbols indicate substances that cause immediate death upon contact
  2. The toxic symbol warns about poisoning, while the corrosive symbol warns about chemical burns
  3. The corrosive symbol is used for flammable liquids, toxic symbol for gases
  4. Both symbols are interchangeable and mean the same hazard

Q5. Conceptually, why is it important to correctly identify toxic and poisonous substance symbols in a laboratory setting?

  1. To ensure proper storage and prevent accidental poisoning
  2. To increase the shelf life of chemicals
  3. To reduce the cost of chemical procurement
  4. To improve the color coding of laboratory equipment

Q6. Compare the flammable material symbol with the oxidizing material symbol. Which statement correctly differentiates them?

  1. Both symbols show a flame, but the oxidizing symbol includes a circle under the flame
  2. The flammable symbol has a skull, while the oxidizing symbol has a flame
  3. The oxidizing symbol is a flame inside a diamond, identical to the flammable symbol
  4. The flammable symbol is a flame with a cross, the oxidizing symbol is a flame only

Q7. Which symbol is used to indicate that a chemical is flammable?

  1. A flame icon inside a diamond
  2. A skull and crossbones
  3. An exclamation mark
  4. A test tube pouring liquid on a hand

Q8. A laboratory assistant notices a chemical container labeled with a skull and crossbones symbol. What immediate action should they take?

  1. Wear protective gloves and avoid inhaling fumes
  2. Store the chemical in direct sunlight
  3. Mix it with water immediately
  4. Dispose of it in the regular trash

Q9. A chemical container shows a warning symbol indicating "harmful/irritant". If the chemical concentration is 5% and the threshold limit for irritation is 3%, by what factor does the concentration exceed the irritation threshold?

  1. 1.5 times
  2. 0.6 times
  3. 2 times
  4. 3 times

Q10. Calculate the percentage of chemicals labeled with the "toxic" symbol if a laboratory has 50 chemicals, out of which 12 are labeled toxic, 15 flammable, 8 corrosive, and the rest are non-hazardous.

  1. 24%
  2. 30%
  3. 20%
  4. 18%

Q11. Conceptually, why is it important to recognize the flammable material symbol in a laboratory setting?

  1. To ensure proper storage away from ignition sources
  2. To identify chemicals that are safe to drink
  3. To know which chemicals are non-reactive
  4. To determine the chemical's color

Q12. In a laboratory, you find a container labeled with a skull and crossbones symbol. What precautionary action should you take before handling it?

  1. Wear heat-resistant gloves
  2. Avoid inhalation and use protective gloves and goggles
  3. Keep away from open flames
  4. Store in a well-ventilated area only

Q13. Why is it important to recognize hazard and warning symbols on laboratory chemicals before handling them?

  1. To identify the chemical's color
  2. To understand the risks and take proper safety precautions
  3. To know the chemical's price
  4. To check the expiry date

Q14. Compare the hazard symbols for "flammable" and "oxidizing" substances. Which statement correctly distinguishes them?

  1. Flammable substances cause fire; oxidizing substances support combustion but are not themselves flammable
  2. Both symbols indicate the same hazard and can be used interchangeably
  3. Oxidizing substances are less dangerous than flammable substances
  4. Flammable substances cannot burn without oxidizing substances

Q15. Which common laboratory hazard symbol indicates the presence of a substance that can cause severe skin burns and eye damage?

  1. Flammable
  2. Corrosive
  3. Toxic
  4. Explosive
Free Junior Lab Assistant Mock Test | Kerala PSC Prep