Download App

How do Organisms Reproduce? — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHow do Organisms Reproduce?1 Mark
MCQ
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : Vaginal pills contain spermicides.
Reason : Spermicides kill the sperms.
  • A
    Both $A$ and $R$ are true and $R$ is correct explanation of the assertion.
  • ✓
    Both $A$ and $R$ are true but $R$ is not the correct explanation of the assertion.
  • C
    $A$ is true but $R$ is false.
  • D
    $A$ is false but $R$ is true.
✓

Answer

Correct option: B.
Both $A$ and $R$ are true but $R$ is not the correct explanation of the assertion.
Vaginal pills are the chemical methods of birth control. The vaginal pills contain the chemicals called spermicides, which kill the sperms.

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 "Assertion - Reasoning (1 Marks)" from How do Organisms Reproduce?→How do Organisms Reproduce? — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

For question two statements are given- one labelled
Assertion $(A)$ and the other labelled
Reason $(R).$ Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below:
Assertion: Diamond and graphite do not have the same crystal structure.
Reason: Diamond is crystalline while graphite is amorphous.
→
Assertion (A) : If mother is homozygous for black hair and father has red hair then their child can inherit black hair.
Reason (R) : Gene for black hair is recessive to gene for red hair in humans.
→
Directions : In the following questions, the Assertions $(A)$ and Reason $(s)\ (R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion : It is the brain, not the sense organs, that interprets the stimulus.
Reason : Sense organs are transducers; they transform the energy of a stimulus to the energy of nerve impulses.
→
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : Zinc reacts with sulphuric acid to form zinc sulphate and hydrogen gas and it is a displacement reaction.
Reason : Zinc reacts with oxygen to form zinc oxide.
→
For question two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below : Assertion : Diamond is the hardest natural known substance.
Reason : Diamond is used for cutting marble, granite and glass.
→
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : Electrovalency of Na is $+\ 1.$
Reason : The number of electrons which an atom either loses or gains in the formation of an ionic bond is known as its valency.
→
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below:
Assertion : In a chain of bulbs, $50$ bulbs are joined in series. One bulb is removed now and circuit is completed again. If the remaining $49$ bulbs are again connected in series across the same supply, then light gets decreased in the room.
Reason : Net resistance of $49$ bulbs will be less than $50$ bulbs.
→
For two statements are given-one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below:
Assertion: $\ce{2H_2S(g) + O_{2(g)} → 2S_{(g)} + 2H_2O_{(l)} }$lt is a redox reaction.
Reason: ln redox reaction, oxidation and reduction take place simultaneously.
→
In the followin questions, a statement of Assertion is given by to corresponding statement of Reason. Of the statement mark the correct answer as :
Assertion : To avoid risk of electrical shock, the metal body of electric appliances is earthed.
Reason : Earthing saves us from electrical shocks.
→
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : The energy available to deer in a food chain is more as compared to that available to lion.
Reason : Deer occupies second trophic level whereas lion occupies first trophic level in a food chain operating in grassland ecosystem.
→