Assertion(A):
During HIV infection, the patient becomes immuno-deficient.
Reason(R):
HIV Virus attacks helper T-lymphocytes and decreases their cell count.
1.
Both (A) and (R) are true and (R) is the correct explanation of (A).
2.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.
(A) is true but (R) is false.
4.
Both (A) and (R) are false.
Subtopic: Â AIDS |
 92%
From NCERT
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| Assertion(A): | Techniques like CT and MRI are very useful in detection of cancers of internal organs. |
| Reason(R): | Techniques of molecular biology can also be used to detect diseases having genetic susceptibility. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Cancer |
 79%
From NCERT
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| Assertion(A): | Adolescence is a very vulnerable phase of mental and psychological development of an individual. |
| Reason(R): | Addiction to drugs or alcohol is very common during adolescence. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Drugs & Alcohol Abuse |
 50%
From NCERT
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| Assertion(A): | Nicotine in tobacco is a sympathomimetic compound. |
| Reason(R): | Nicotine stimulates the release of adrenaline into blood. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Drugs & Alcohol Abuse |
 66%
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| Assertion(A): | With time, there is greater intake and addiction of drugs among addicts. |
| Reason(R): | With repeated use of drugs, tolerance level of receptors declines. |
| 1. | Both (A) and (R)are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Drugs & Alcohol Abuse |
 59%
From NCERT
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| Assertion(A): | Use of cocaine causes a temporary sense of euphoria. |
| Reason(R): | It has a stimulatory effect on central nervous system by promoting release of GABA |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Common Cold & Malaria Introduction |
From NCERT
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| Assertion: | Opioids are stimulants |
| Reason: | Opioids have receptors only in brain. |
| 1. | Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. |
| 2. | Both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. |
| 3. | Assertion is true but Reason is false. |
| 4. | Both Assertion and Reason are false. |
Subtopic: Â Drugs & Alcohol Abuse |
From NCERT
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| Assertion(A): | Morphine is very useful in patients undergoing surgery. |
| Reason(R): | It is a very effective sedative and pain killer. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Drugs & Alcohol Abuse |
 93%
From NCERT
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| Assertion(A): | Anamnestic response is due to memory cells. |
| Reason(R): | The predominant antibody in anamnestic response is lgM. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Details of Immunity |
 53%
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| Assertion: | Tissue and blood group match is needed for organ transplant between recipient and donor. |
| Reason: | Transplantation helps the patient of organ failure to live a normal life. |
| 1. | Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. |
| 2. | Both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. |
| 3. | Assertion is true but Reason is false. |
| 4. | Both Assertion and Reason are false. |
Subtopic: Â Details of Immunity |
 73%
From NCERT
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