Q17: Pakistan Affairs MCQ 2023

**A pencil dipped in water appears bent due to:**A) ReflectionB) DiffractionC) RefractionD) None of these Show Answer Correct Answer: C – Refraction

**Vitamins A, D, E, and K are called:**A) Water-soluble vitaminsB) Primary vitaminsC) Basic vitaminsD) Fat-soluble vitamins Show Answer Correct Answer: D – Fat-soluble vitamins

**The ionosphere is located within the thermosphere and extends:**A) From 60-300 km above the Earth’s surfaceB) From 50-200 km above the Earth’s surfaceC) From 50-300 km above the Earth’s surfaceD) None of these Show Answer Correct Answer: C – From 50-300 km above the Earth’s surface

**Magnifying power of a simple microscope can be increased by:**A) Increasing focal length of the lensB) Decreasing focal length of the lensC) Lens of large apertureD) Lens of short aperture Show Answer Correct Answer: B – Decreasing focal length of the lens

**Fossils found in the lowest geological strata are generally the most:**A) AdvancedB) ComplexC) PrimitiveD) Specialized Show Answer Correct Answer: C – Primitive