Q11: Pakistan Affairs MCQ 2019

**How can we symbolically write the ozone gas?**A) O₂B) O₃C) CO₂D) None of these Show Answer Correct Answer: B – O₃

**A moderator is used in a nuclear reactor in order to:**A) Accelerate the neutronsB) Slow down the speed of the neutronsC) Increase the number of electronsD) None of these Show Answer Correct Answer: B – Slow down the speed of the neutrons

**Which structure is not a part of the endomembrane system?**A) Nuclear envelopeB) ChloroplastC) Golgi apparatusD) ER Show Answer Correct Answer: B – Chloroplast

**Dr. Abdus Salam of Pakistan was one of the contributors to the unification of:**A) Electromagnetic force and gravitational forceB) Electromagnetic force and weak nuclear forceC) Gravitational force and weak nuclear forceD) Weak nuclear force and strong nuclear force Show Answer Correct Answer: B – Electromagnetic force and weak nuclear force

**Three elements needed for the healthy growth of plants are:**A) Nitrogen, Phosphorus, PotassiumB) Nitrogen, Carbon, PhosphorusC) Nitrogen, Potassium, CarbonD) Nitrogen, Sulphur, Phosphorus Show Answer Correct Answer: A – Nitrogen, Phosphorus, Potassium