Atomic Structure STBAtomic Structure MCQs (STB)#Discovery of Radioactivity#Radioactivity6Choose the best answerWho discovered natural radioactivity in 1896?AMarie CurieBPierre CurieCHenri BecquerelDHenry Moseley Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Ionizing Power#Radioactivity7Choose the best answerCompared with γ rays, the ionizing power of α particles is approximately:A100 timesB1000 timesC5000 timesD10,000 times Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Gamma Radiation#Radioactivity8Choose the best answerQ.111 The option having all the properties of γ-rays:ANeutron highly penetrating, velocity is equal to that of light. Remain undeflected in magnetic fieldBMost penetrating, velocity is equal to that of light, no deflection in magnetic field, short wavelength, shorter than X-raysCLeast penetrating, velocity of light, deflects in magnetic field, helium nucleusDProton least penetrating, deflects like negative particle in magnetic field Like 0 Discuss 0Share
SINDH MDCAT 2018 Chemistry#Definition of Radioactivity#Radioactivity9Choose the best answerThe phenomenon in which certain elements emit invisible radiations is called: (Sindh MDCAT 2018)ASpectroscopyBRadioactivityCGravimetryDChromatography Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Gamma Radiation#Radioactivity10Choose the best answerWhat does γ radiation consist of?AHigh-speed electronsBHelium nucleiCHigh-frequency electromagnetic photonsDProtons and neutrons Like 1 Discuss 0Share