166 . The most effective method of preventing infectious diseases is —

  • A. Immunization
  • B. Antibiotics
  • C. Surgery
  • D. Bed rest
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167 . The most reliable clinical feature of strangulaed inguinal hernia is

  • A. Pain
  • B. Fever
  • C. Tense and tender lump in the inguinal region
  • D. Vomiting
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Medical Science) (18-07-2025) | 2025
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168 . The phase of the cardiac cycle when ventricles contract is called ___

  • A. Diastole
  • B. Systole
  • C. Isovolumetric relaxation
  • D. Atrial contraction
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169 . The primary goal of antenatal care is:

  • A. Detect fetal abnormalities
  • B. Ensure maternal and fetal well-being
  • C. Schedule elective cesareans
  • D. Reduce maternal weight
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170 . The property that makes acrylic resin suitable for denture bases is -

  • A. High thermal conductivity
  • B. High solubility
  • C. Light weight and easily moldable
  • D. Needs no polymerization
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Dental Science) (18-07-2025) | 2025
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171 . The structural and functional unit of Lung is

  • A. Alveoli
  • B. Bronchiole
  • C. Bronchus
  • D. Trachea
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Medical Science) (18-07-2025) | 2025
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172 . Time dependent flow is known as-

  • A. Viscosity
  • B. Creep
  • C. Resilience
  • D. Rheology
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Dental Science) (18-07-2025) | 2025
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173 . Traction is primarily used to:

  • A. Strengthen muscles
  • B. Reduce muscle spasm and align bones
  • C. Help digestion
  • D. Improve circulation
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174 . True adhesion occur in the following materials with tooth structure -

  • A. Amalgam
  • B. Gold inlay
  • C. Polycarboxylate cement
  • D. Titanium alloy
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Dental Science) (18-07-2025) | 2025
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175 . Universally accepted indicator of health status of a population is-

  • A. Child death rate
  • B. Case fatality rate
  • C. Infant mortality rate
  • D. Under-5 mortality rate
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Medical Science) (18-07-2025) | 2025
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176 . Uterine contractions in labour

  • A. are consciously controllable
  • B. are efficient at 5 mmHg
  • C. start at fundus of uterus
  • D. are painful due to ischemia
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Medical Science) (18-07-2025) | 2025
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177 . Utero-vaginal prolapse

  • A. is a very painful condition
  • B. is worse in erect posture
  • C. is common in nulliparous women
  • D. may resolve spontaneously
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Medical Science) (18-07-2025) | 2025
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178 . Viral disease that may cause thrombocytopenia is

  • A. SARS-Cov-2
  • B. Influenza
  • C. Dengue
  • D. Hepatitis B
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Medical Science) (18-07-2025) | 2025
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179 . Which vitamin is essential for blood clotting?

  • A. Vitamin A
  • B. Vitamin D
  • C. Vitamin K
  • D. Vitamin C
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180 . What does the principle of non maleficence mean in dental practice?

  • A. Do no harm
  • B. Always obey the patient
  • C. Making documents confidential
  • D. Avoid costly materials
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৪৮ তম (বিশেষ) বিসিএস প্রিলিমিনারি টেস্ট (Dental Science) (18-07-2025) | 2025
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