Q4: General Science & Ability MCQ 2015

**COVID-19 is caused by?**A) BacteriaB) VirusC) InfectionD) None of these Show Answer Correct Answer: B – Virus

**H⁺ is yielded by:**A) AcidsB) AlkalisC) Both A and BD) None of these Show Answer Correct Answer: A – Acids

**The size of a MAC address in a computer network is:**A) 16 bitsB) 32 bitsC) 48 bitsD) None of these Show Answer Correct Answer: C – 48 bits

**In winter an iron pipe feels colder than a wooden window. This is because wood is:**A) ConductorB) Non-ConductorC) Semi-ConductorD) Not a solid while iron is a solid Show Answer Correct Answer: B – Non-Conductor