Q2: Current Affairs MCQ 2010

**The device which converts analog signal to digital signal is called:**A) TransformerB) CPUC) ModemD) None of these Show Answer Correct Answer: C – Modem

**The alpha particles are compact clusters of:**A) Electron and protonB) Two protons and two neutronsC) Three protons and three neutronsD) None of these Show Answer Correct Answer: B – Two protons and two neutrons

**A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect:**A) CurrentB) VoltageC) Nuclear RadiationD) Power Show Answer Correct Answer: C – Nuclear Radiation

**An area of microbiology that is concerned with the occurrence of disease in human population is:**A) ImmunologyB) ParasitologyC) EpidemiologyD) None of these Show Answer Correct Answer: C – Epidemiology

**The chemical formula for alum is:**A) KAl(SO4)2·12H2OB) KSl(SO4)2·12H2OC) KAl(SO4)2·8H2OD) None of these Show Answer Correct Answer: A – KAl(SO4)2·12H2O