17/06/2025 Entry test MCQS 1. *Baking soda formula*: *NaHCO₃* 2. *Shape of CH₄*: *Tetrahedral* 3. *Shape of H₂O*: *Bent or V-shaped* 4. *Unit of pressure*: *Pascal (Pa)* 5. *Thermometer measures*: *Temperature* 6. *Oxidation state of oxygen in KMnO₄*: *–2* 7. *Atmosphere oxygen percentage*: *≈ 21%* 8. *Boyle’s Law relates*: *Pressure and Volume (at constant temperature)* 9. *Flow against internal resistance*: *Current or EMF-related current* 10. *Unit of viscosity*: *Pascal-second (Pa·s) or N·s/m²* 11. *Charles’s Law*: *V ∝ T (at constant pressure)* 12. *Process with constant temperature*: *Isothermal process* 13. *First law of thermodynamics equation*: *ΔQ = ΔU + W* 14. *Absolute temperature*: *Measured in Kelvin (K), starts from 0 K*