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