div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air src=https:reader034fdocumentsnetreader034viewer20220421015e7e003d76fb0c2c33750589html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air src=https:reader034fdocumentsnetreader034viewer20220421015e7e003d76fb0c2c33750589html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air src=https:reader034fdocumentsnetreader034viewer20220421015e7e003d76fb0c2c33750589html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air src=https:reader034fdocumentsnetreader034viewer20220421015e7e003d76fb0c2c33750589html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air...