CBSE-Chapter-Matter In Our Surrounding I. MULTIPLE CHOICE QUESTIONS : (6x1=6) 1. State the physical state of water at 273K a) Solid                                           b) Liquid & Gas   c) Solid & Liquid                            d) Liquid                 2. Which condition out of the following will increase the evaporation of water? a) Increase in temperature of water b) Decrease in windspeed c) Less exposed surface area of water d) High humidity 3. On converting 25*C, 38*C and 66*C to Kelvin scale, the correct sequence...