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Class 12BiologyReproductive HealthSexually Transmitted Diseases
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Which of the following statements about hepatitis-$B$ is incorrect?

  • A
    It is one of the examples of $STD$.
  • B
    It is spread primarily by sexual contact,and also by contaminated syringes and blood transfusion.
  • C
    It is a $42 \ nm$ enveloped virus containing $ss-RNA$ as the genetic material.
  • D
    Recombivax $HB$ vaccine is available to prevent hepatitis-$B$ infection.
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Class 12 Questions

Class 12

Biology Questions

Chapter

Reproductive Health

Subtopic

Sexually Transmitted Diseases

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Match the following sexually transmitted diseases (column $I$) with their causative agent (column $II$) and select the correct option.
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$A$. Gonorrhoea$i$. $HIV$
$B$. Syphilis$ii$. Neisseria
$C$. Genital warts$iii$. Treponema
$D$. $AIDS$$iv$. Human papilloma virus

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