RHS EXAM, PRACTICE EXAM AND STUDY GUIDE
LATEST 2025-2026 ACTUAL EXAM 100 QUESTIONS
AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+
✅ Key Features
• 100 real exam-based questions with verified correct answers.
• Detailed rationales/explanations provided for every answer.
• Newest 2025–2026 edition, fully aligned with RHS exam updates.
• Verified accuracy and graded A+ quality.
• Comprehensive coverage of horticulture principles, plant identification,
maintenance, pest management, and safety protocols.
🎯 Who This Resource Is For
• Candidates preparing for the RHS Exam.
• Learners aiming to strengthen technical knowledge and horticultural skills.
• Educators and mentors seeking a reliable test prep resource.
• Candidates working toward exam confidence, accuracy, and certification success.
Which of the following structures would appear radiopaque on a dental radiograph?
A. Air Space
B. Bone
C. Periodontal Ligament
D. Pulp Tissue - ANSWER-B. Bone
The maximum annual permissible dose (MPD) of ionizing radiation for the public is:
A. 0.5 REM per year
B. 1.0 REM per year
C. 0.05 REM per year
D. 5.0 REM per year - ANSWER-A. 0.5 REM per year
,When exposing radiographs on an edentulous patient, compared to a dentulous patient, the exposure
time should:
A. be increased
B. be reduced
C. remain the same - ANSWER-B. be reduced
To reduce cross-contamination during dental radiography, the CDC recommends that dental radiography
operators do all of the following EXCEPT:
A. cover the control unit & tube head with plastic barriers
B. use sterilizable or disposable film holders
C. wear gloves
D. take complete medical histories - ANSWER-D. take complete medical histories
Which of the following should be included in a quality assurance policy for dental radiographs?
A. A budget for all expenses
B. A plan for corrective action
C. A chart of clinical protocols
D. Schedule to take inventory - ANSWER-B. A plan for corrective action
Which of the following are common parts of a dental x-ray machine?
A. Beam alignment device, film holder, collimating device
B. Exposure button, exposure light, control device
C. Control panel, extension arm, tubehead
D. PID, XCP-ring, endo-ring - ANSWER-C. Control panel, extension arm, tubehead
Ionization occurs when an x-ray strikes an atom & the atom:
A. loses an electron
B. loses a proton
C. gains a neutron
, D. gains a positron - ANSWER-A. loses an electron
Which of the following radiographic exposures produces a radiograph that shows the crowns of both
maxillary & mandibular teeth?
A. Cephalometric
B. Bitewing
C. Periapical
D. Occlusal - ANSWER-B. Bitewing
Which of the following anatomical landmarks is NOT normally seen on intraoral radiographs?
A. Nutrient canals
B. Mandibular canal
C. Frontal sinus
D. Maxillary sinuses - ANSWER-C. Frontal sinus
The paralleling technique is recommended for which of the following radiographic exposures?
A. Panoramic
B. Bitewing
C. Occlusal
D. Cephalometric - ANSWER-B. Bitewing
Which of the following is recommended to help stabilize intraoral film when placed in the patient's
mouth?
A. Use the largest film size that will fit
B. Ask the patient not to move
C. Utilize a film holder
D. Ask the patient to hold the film in place - ANSWER-C. Utilize a film holder
Automatic processors do all of the following EXCEPT:
LATEST 2025-2026 ACTUAL EXAM 100 QUESTIONS
AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+
✅ Key Features
• 100 real exam-based questions with verified correct answers.
• Detailed rationales/explanations provided for every answer.
• Newest 2025–2026 edition, fully aligned with RHS exam updates.
• Verified accuracy and graded A+ quality.
• Comprehensive coverage of horticulture principles, plant identification,
maintenance, pest management, and safety protocols.
🎯 Who This Resource Is For
• Candidates preparing for the RHS Exam.
• Learners aiming to strengthen technical knowledge and horticultural skills.
• Educators and mentors seeking a reliable test prep resource.
• Candidates working toward exam confidence, accuracy, and certification success.
Which of the following structures would appear radiopaque on a dental radiograph?
A. Air Space
B. Bone
C. Periodontal Ligament
D. Pulp Tissue - ANSWER-B. Bone
The maximum annual permissible dose (MPD) of ionizing radiation for the public is:
A. 0.5 REM per year
B. 1.0 REM per year
C. 0.05 REM per year
D. 5.0 REM per year - ANSWER-A. 0.5 REM per year
,When exposing radiographs on an edentulous patient, compared to a dentulous patient, the exposure
time should:
A. be increased
B. be reduced
C. remain the same - ANSWER-B. be reduced
To reduce cross-contamination during dental radiography, the CDC recommends that dental radiography
operators do all of the following EXCEPT:
A. cover the control unit & tube head with plastic barriers
B. use sterilizable or disposable film holders
C. wear gloves
D. take complete medical histories - ANSWER-D. take complete medical histories
Which of the following should be included in a quality assurance policy for dental radiographs?
A. A budget for all expenses
B. A plan for corrective action
C. A chart of clinical protocols
D. Schedule to take inventory - ANSWER-B. A plan for corrective action
Which of the following are common parts of a dental x-ray machine?
A. Beam alignment device, film holder, collimating device
B. Exposure button, exposure light, control device
C. Control panel, extension arm, tubehead
D. PID, XCP-ring, endo-ring - ANSWER-C. Control panel, extension arm, tubehead
Ionization occurs when an x-ray strikes an atom & the atom:
A. loses an electron
B. loses a proton
C. gains a neutron
, D. gains a positron - ANSWER-A. loses an electron
Which of the following radiographic exposures produces a radiograph that shows the crowns of both
maxillary & mandibular teeth?
A. Cephalometric
B. Bitewing
C. Periapical
D. Occlusal - ANSWER-B. Bitewing
Which of the following anatomical landmarks is NOT normally seen on intraoral radiographs?
A. Nutrient canals
B. Mandibular canal
C. Frontal sinus
D. Maxillary sinuses - ANSWER-C. Frontal sinus
The paralleling technique is recommended for which of the following radiographic exposures?
A. Panoramic
B. Bitewing
C. Occlusal
D. Cephalometric - ANSWER-B. Bitewing
Which of the following is recommended to help stabilize intraoral film when placed in the patient's
mouth?
A. Use the largest film size that will fit
B. Ask the patient not to move
C. Utilize a film holder
D. Ask the patient to hold the film in place - ANSWER-C. Utilize a film holder
Automatic processors do all of the following EXCEPT:
