Chapter-4: Chemical Bonding and Molecular Structure 1. The hybrid state of sulphur in SO2 molecule is : sp² sp³ sp sp³d 2. Which one of the following does not have sp² hybridised carbon? Acetone Acetic acid Acetonitrile Acetamide 3. Which one of the following is paramagnetic? NO+ CO O2– CN 4. In which of the […]

Chapter-3: Classification of Elements and Periodicity in Properties 1. Which of the following has the highest boiling point? Ne Xe Ar Kr. 2. Which of the following has the maximum number of unpaired electrons? Mg2+ Ti3+ V3+ Fe2+ 3. Representative elements are those which belong to p and d – Block s and d –

Chapter-2: Structure of Atom 1. The credit of discovering neutron goes to Rutherford Thomson Goldstein Chadwick 2. For principal quantum number n = 4, the total number of orbitals having l = 3 is 3 7 5 9 3. The maximum number of electrons that can be accommodated in fifth energy level is 10 25

Chapter-1: Some Basic Concepts of Chemistry 1 .  Which of the following halogen can be purified by sublimation F2 Cl2 Br2 I2 2. Which has maximum number of atoms? 24 g of C (12) 56 g of Fe (56) 27 gof Al (27) 108 g of Ag (108) 3. 1 mol of CH4 contains 6.02