Q4: General Science & Ability MCQ 2009

**The lens used to correct short-sightedness is:**A) Concave polygonB) Concave prescription lensesC) Concave mirrorD) None of these Show Answer Correct Answer: B – Concave prescription lenses

**Vaccination is synonymous with ___ immunity:**A) Natural activeB) Artificial activeC) Artificial passiveD) None of these Show Answer Correct Answer: B – Artificial active

**When we move from left to right in the second period, the atomic number of the element:**A) IncreasesB) DecreasesC) Decreases then increasesD) None of these Show Answer Correct Answer: A – Increases