{"version":"1.0","provider_name":"Learn CBSE","provider_url":"https:\/\/www.learncbse.in","author_name":"Sastry CBSE","author_url":"https:\/\/www.learncbse.in\/author\/sastry-cbse\/","title":"JEE Main Previous Year Papers Questions With Solutions Chemistry Elements of S-Block : Hydrogen,Group 1 and 2","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\"><a href=\"https:\/\/www.learncbse.in\/jee-main-previous-year-papers-questions-with-solutions-chemistry-elements-of-s-block-hydrogengroup-1-and-2\/\">JEE Main Previous Year Papers Questions With Solutions Chemistry  Elements of S-Block : Hydrogen,Group 1 and 2<\/a><\/blockquote>\n<script type='text\/javascript'>\n<!--\/\/--><![CDATA[\/\/><!--\n\t\t\/*! This file is auto-generated *\/\n\t\t!function(d,l){\"use strict\";var e=!1,n=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var r,i,a,s=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=new RegExp(\"^https?:$\",\"i\"),c=0;c<n.length;c++)n[c].style.display=\"none\";for(c=0;c<s.length;c++)if(r=s[c],e.source===r.contentWindow){if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(a=parseInt(t.value,10)))a=1e3;else if(~~a<200)a=200;r.height=a}if(\"link\"===t.message)if(i=l.createElement(\"a\"),a=l.createElement(\"a\"),i.href=r.getAttribute(\"src\"),a.href=t.value,o.test(a.protocol))if(a.host===i.host)if(l.activeElement===r)d.top.location.href=t.value}}},e)d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",t,!1),d.addEventListener(\"load\",t,!1);function t(){if(!n){n=!0;for(var e,t,r=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),i=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),a=l.querySelectorAll(\"iframe.wp-embedded-content\"),s=0;s<a.length;s++){if(!(e=a[s]).getAttribute(\"data-secret\"))t=Math.random().toString(36).substr(2,10),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t);if(r||i)(t=e.cloneNode(!0)).removeAttribute(\"security\"),e.parentNode.replaceChild(t,e)}}}}(window,document);\n\/\/--><!]]>\n<\/script><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.learncbse.in\/jee-main-previous-year-papers-questions-with-solutions-chemistry-elements-of-s-block-hydrogengroup-1-and-2\/embed\/\" width=\"600\" height=\"338\" title=\"&#8220;JEE Main Previous Year Papers Questions With Solutions Chemistry  Elements of S-Block : Hydrogen,Group 1 and 2&#8221; &#8212; Learn CBSE\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe>","description":"JEE Main Previous Year Papers Questions With Solutions Chemistry \u00a0Elements of S-Block : Hydrogen,Group 1 and 2 1.K02(potassium super oxide) is used in oxygen\u00a0cylinders in space and submarines. This is because it \u00a0 \u00a0 \u00a0 \u00a0(2002) (1)absorbs C02 and increases 02 content (2)eliminates moisture (3)absorbs C02 4) produces ozone Ans.(2) 2KO, + 2H20 \u2014&gt;2KOH + [&hellip;]","thumbnail_url":"https:\/\/farm2.staticflickr.com\/1536\/25350591674_d3d2bd1a0d_o.png"}