ETEA RECONDUCTED PAPER 2023 ETEA 2023 ( PART 9 ) 1. When an element occurs in different physical forms it is called _____ . Antisotropy Allotropes Polymorphism Isomorphism 2. What mass of CaCO3 give 48.8 liters (measured at STP) of CO2 on strong heating 100 g 150 g 300 g 200 g 3. What is the reason of small atomic radii of sodium ions as compared to sodium atoms Shielding effect Electronegativity Electron affinity Effective nuclear charge 4. What Is the radius of 3rd orbit of electron of H-atom 9.7 A° 4.761 A° 3.39 A° 5.29 x 10^11 A° 5. What is the other name of positive rays Photon rays Magnetic rays Quantum Canal rays 6. What is the magnetic quantum number for S-orbital 0 3 5 2 7. The volume of a fixed mass of gas is directly proportional to absolute temperature and constant pressure as stated by: Charles law Daltons law Boyles law Avogadro’s law 8. The tautomer of propanol is Propanal Methyl ethyl ether Propanone Butanone 9. The substituent attached to the benzene ring that act as ring deactivator is NO2 CI NH3 COOH 10. The specific heat of water is 42 j/g/k 4.2 j/g/k 4.2 j/g-k 4.2 kj/mol/k Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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