3. Assertion: AIDS is a deadly disease.
Reason: AIDS is caused by virus.
4. Assertion : Convex lens has its two surfaces bulging outward.
Reason: It makes parallel rays of light to spread from a point.
5. Assertion: Mendeleev did not leave any gap in his periodic table.
Reason: Gaps were necessary for unknown elements.
answer the questions if both assertion and reson are true or false for each part
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3. Assertion and reason both are true but reason is not the correct explanation of assertion.
The correct reason is that it harms the immune system.
4. Assertion is true but reason is false because a convex lens converges parallel beam of light.
5. Assertion is false but reason is true.
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