Top 21 CNA Interview Questions In 2024 [With Answers]

There is a reason why medical professionals around the world are regarded as next to God. Not only do they save fragile human lives but also mitigate severe pains and sufferings through their high level of expertise, finesse, and intelligence. CNA stands for Certified Nursing Assistant and is a course undertaken by students willing to serve hospitals, clinics, and diagnostic centers as nurses or a direct assistant to a qualified doctor. A certified nursing assistant is a position of repute in any medical institution and fetches a high salary and lucrative incentives. Considering the limited number of job openings and vacancies available, it is necessary to put the best foot forward and prepare sincerely for the interview session by studying and analyzing the most important interview questions.

CNA Interview Questions

21 Best Interview Questions To Study For CNA

1. Digestion Starts From Our Mouth. Comment On This Statement.

This question tests your knowledge and understanding of the basic human digestive system. Being a nurse, you are expected to give satisfactory answers to questions related to human anatomy and organs.

Sample Answer

Sir, this statement is completely true. As soon as food enters into our mouth, the process of digestion kick starts. This is primarily due to the presence of salivary glands in our mouth whose only purpose is to produce saliva. This saliva contains an enzyme known as, salivary amylase which initiates the process of digestion. This enzyme converts starch present in our food into maltose.

2. Name The Three Bones Of Our Ears.

This question aims to test your knowledge as well as an understanding of the human skeletal system.

Sample Answer

Sure, sir, These are:

  • Malleus
  • Incus and
  • Stapes (smallest bone of our body)

3. Explain The Three Types Of Arthritis?

Being a nurse, you are expected to have basic knowledge as well as an understanding of common human diseases. Arthritis is a common issue among adults and hence becomes an important CNA interview question.

Sample Answer

Types of ArthritisImpact on The Human Body
Osteo ArthritisThis is the most common form of arthritis, related to the age of an individual. It strikes due to normal age-related weakening of bones.
Rheumatoid ArthritisThis type of arthritis attacks the own immune system of an individual and affects the joints.
Gout ArthritisThis leads to excessive creation of uric acid in our body, which eventually gets deposited onto our bones, leading to its gradual weakness and loss of strength.

4. Our Vertebral Column Is Divided Into Several Regions. If You Agree With This Statement Name and Explain These Regions.

This question aims to test your knowledge as well as an understanding of the human skeletal system.

Sample Answer

Yes sir, I completely agree with this statement. Our vertebral column is divided into five regions or parts, which are:

Name of the RegionsNumber of bones contained
Cervical region7
Thoracic region12
Lumbar region5
Sacrum region5
Coccygeal region4

5. What Are Three Steps Following Which Our Human Kidney Operates?

This question tests your knowledge and understanding of the human excretory system. The kidney always forms a major part of the excretory system, hence always prepare for this organ in detail.

Sample Answer

Name of the stepsActivity in each step
Glomerular FiltrationThis is the first step in the process of filtration. In this step, Bowman’s capsule located at the upper part of the kidney, functions and, purifies the blood passing through.
Tubular Re-absorptionIn this step, all the useful substances present in the fluid passing through the kidney is re-absorbed and put back into the bloodstream.
Tubular ExcretionThis is the last step of filtration, and all the unwanted substances are excreted through the urinary bladder.

6. Define The Composition Of Urine.

This question tests your knowledge and understanding of the human excretory system.

Sample Answer

Sure, sir, Human urine can be divided and classified into three components, which are:

  • Water: Around 96% of the total urine is water
  • Salt: 1.5% of the total urine is salt, primarily sodium chloride
  • Urea: The rest of the percentage count belongs to urea.

7. Name The Excretory Organs Of Flat Worms, Vertebrates and Round Worms.

Being a CNA, you are expected to have a basic understanding of animal biology as well. There will always be questions related to animals and their excretory organs.

Sample Answer

Sure, sir, these are:

  • Flat Worms: Flame Cells
  • Vertebrates: Kidney
  • Round Worms: Nephridia

8. Name Two Common STDs and Their Scientific Names.

Sexually transmitted diseases are common and are the favorite areas of the interviewers. Hence, prepare for them in-depth so as to counter such questions with relative ease and precision.

Sample Answer

Sure, sir, these are:

  • Syphilis: Tryponema Pallidium
  • Gonorrhoea: Neisseria Gonnorhoea

9. What Are The Vitamins Of Which Our Body Does Not Need A Regular Supply?

This question tests your knowledge and understanding of the minerals, vitamins, and nutrients required or present in our human body.

Sample Answer

Sir, there are two categories of vitamins present in our human body. These are:

Water-Soluble Vitamins – Vitamin B and CThese vitamins are soluble in water and are frequently excreted via urine. Hence, in order to replenish the shortfall, our body needs a constant supply of them.
Fat-Soluble Vitamins – Vitamin A, D, E, and KUnlike B and C, These vitamins are dissolved and stored in our body fat. Hence, we do not need a regular supply of them.

10. Name Any Three Varities Of Vitamin B and List The Diseases Caused Due To Their Deficiency.

This question aims to test your basic knowledge about the common categories or varieties of Vitamin B. Further, being a CNA you are supposed to have a good knowledge of the various diseases that are caused, because of the deficiency of a specific vitamin.

Sample Answer

Name of the varietiesDeficiency causes
Vitamin B1 (Thiamin)Beri-beri (a disease related to the human nervous system) and Wernicke-korsakoft syndrome.
Vitamin B2 (Riboflavin)Cracking of skin and tongue, and Reddish Eyes
Vitamin B3 (Niacin)Pellagra (weak memory) and Glossitis

11. Name The Trace Minerals and Major Minerals Required By Our Human Body.

This question tests your knowledge and understanding of the minerals, vitamins, and nutrients required or present in our human body.

Sample Answer

Sure, sir, these are:

Trace Minerals (required in less quantity)Major Minerals (required in moderate quantity)

12. Explain In Brief The Two Speech Areas Of Cerebrum.

This question tests your knowledge and understanding of the human central nervous system.

Sample Answer

  • Wernicke’s Area: This area is responsible for interpreting our sensory input of speech. Whatever we listen is interpreted by this area so as to draw meaningful conclusions.
  • Broca’s Area: This area deals with the responses to be generated. Hence, this part of cerebrum controls motor speech.

13. What Are The Two Parts Of Diencephalon and Their Uses?

This question tests your knowledge and understanding of the human central nervous system.

Sample Answer

Sir, the diencephalon is a part of the human brain and can be divided into two parts:

Parts of DiencephalonFunctions
ThalamusThis part is responsible to relay the sensory information received by our human brain from the various sensory input organs.
HypothalamusThis part is responsible to control:
1. Body temperature
2. Sleep-wake cycle
3. Appetite and Thirst
4. Pituitary secretions

14. What Motivates You To Work?

This is a common interview question using which an interviewer wants to know the primary motivational factors that stimulate you and prompt you to work hard at your workplace. This question is pretty unique in nature and is majorly influenced by the conditions, circumstances, and desires of an individual. Hence, always try to give answers that are unique and truly resemble you. In case you are confused about answers, Prepmycarerer had devised ten unique sample answers to this question for your reference.

15. Nursing Is A Busy Profession. How Do You Prioritize Between Several Tasks?

Medical institutes and allied places are overwhelmed with patients. This means additional work pressure which translates into assigning several business tasks to the medical professionals working at such institutions. In order to ensure that you will be able to execute and finish all your tasks satisfactorily, an interviewer asks this question, to understand your own prioritization strategy. Prepare sincerely and in-depth for this interview question, by accessing our exclusive post.

16. How Do You Handle Work Related Stress?

Undoubtedly, medical professionals have to perform duties and finish tasks under some severe stress. Apart from increasing workloads, they have to bear and conquer the emotional stress as well, which can impact their overall functioning considerably. Hence, an interviewer always prefers to ask this question from a candidate so as to examine and judge his or her overall attitude towards functioning in the hectic working environment.

A perfect answer to this question can increase your chances of selection considerably, hence always refer and prepare from our article, specifically targeting this interview question.

17. What Are Your Salary Expectations?

Interviewers nowadays, prefer to enquire about your salary expectations during an interview session itself. This is a delicate interview question and must be handled with care and precaution. Prepmycareer recommends never to share any random salary figure in response to this question, rather share a salary figure based on proper research and analysis. Boost your preparation for this interview question, by referring to our article, How To Discuss Salary?

18. When Can You Start?

There is nothing technical in this interview question, yet, many falter. For some, this question seems to guarantee their selection for the job, however, the reverse is pretty much true. This question in no way assures your selection, and hence you are advised to maintain your level of focus and concentration by controlling your emotions. In an ideal response to this question, just share a date, post which you are available and can start working for the organization. In case you are still confused, prepare for this interview question from our targeted article.

19. What Is Your Major Weakness?

An interview session is always incomplete without a strength-weakness-related question. It not only allows an interviewer to analyze the personality as well as attitude of a candidate but also helps him or her to examine the body language. This question is almost inevitable to be avoided from an interview session, hence, prepare for this question sincerely, if possible, by way of preparing a written report. Refer to our targeted article, in order to boost your overall preparation for this interview question.

20. Why You Chose Us?

This is a trending interview question using which an interviewer wants to know about your level o seriousness as well as commitment towards the business organization you sought to work with. As an ideal response to this question, it is worth mentioning some of the unique achievements and accomplishments of the business organization coupled with some historical facts. Close your answer, as to how working at this company can help your overall career prospects. Considering the frequency and importance of this interview question, Prepmycareer has designed a special article, covering this interview question.

21. Do You Have Any Questions For Us?

It is common for an interviewer to conclude an interview session with this question. This question gives an opportunity to a candidate to ask a few questions from the interviewer in regards to the organization, its working culture, ethics, work timings, etc. Skipping this question might prove fatal to the chances of selection of a candidate as he or she will largely be perceived as either underprepared or not serious for the job opening. Hence, always ask a few model questions, based on the questions mentioned below:

  • What are the various benefits and employee centric policies offered by the organization to its employees?
  • Please share a list of allowances and events in which organization offers paid leaves to its employees.
  • What are the various training and development opportunities available at the organization for its full-time employees?


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