Download App

Reproductive Health — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYReproductive Health1 Mark
MCQ
Emergency contraceptives are effective if used within:
  • A
    72 hrs of coitus.
  • B
    72 hrs of ovulation.
  • C
    72 hrs of menstruation.
  • D
    72 hrs of implantation.
✓

Answer

  1. 72 hrs of implantation.

Combination or IUDs within 72 hours of coitus have been found to be very effective as emergency contraceptives as they could be used to avoid possible pregnency due to rape or casual unprotected intercourse.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (0.5 Marks)" from Reproductive Health→Reproductive Health — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

For leucine (leu) which codes are correct?
→
Significance of 'heat shock' method in bacterial transformation is to facilitate.
→
$A$- Four cells are at the chalzal end and are called the antipodals.

$R -$ A typical angiosperm embryo sac, at maturity,though $8$-nucleate is $7$-celled

→
Intensely lactating mothers do not generally conceive due to the
→
Which one of the following is primary lymphoid organ?
→
In $F_2$ generation, a phenotypic ratio of $1:1:1:1$ exhibits
→
Which of the following is genotypic ratio of Mendel's monohybrid cross
→
Pleitrophy is a condition in which a single gene
→
Match List $- I$ with List $- II.$

List $- I$ List $- II$
$(a)$ Adaptive radiation $(i)$ Selection of resistant varieties due to excessive use of herbicides and pesticides
$(b)$ Convergent evolution $(ii)$ Bones of forelimbs in Man and Whale
$(c)$ Divergent evolution $(iii)$ Wings of Butterfly and Bird
$(d)$ Evolution by anthropogenic action $(iv)$ Darwin Finches

Choose the correct answer from the options given below.

$(a)- (b)- (c)- (d)$

→
Which group represents external genitalia of human female ?
→