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| 1. |
Tabulate any five chemical substance with any three natural indicators |
| Answer» <html><body><p><img align="absmiddle" alt="\Huge\tt{Answer:-}" class="latex-formula" id="TexFormula1" src="https://tex.z-dn.net/?f=%5CHuge%5Ctt%7BAnswer%3A-%7D" title="\Huge\tt{Answer:-}"/> </p><h2></h2><h2><strong><u>ACIDS</u></strong><strong><u>,</u></strong><strong><u> </u></strong><strong><u>BASES</u></strong><strong><u> </u></strong><strong><u>AND</u></strong><strong><u> </u></strong><strong><u>SALTS</u></strong></h2><h2></h2><p>Substances can be divided into three types: <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a>, Base and Salt.</p><p></p><h3><strong>Acids</strong><strong>:</strong><strong>-</strong></h3><p>Taste of acid is sour. There are many substances which contain acid and so taste sour. For example: lemon, curd, <a href="https://interviewquestions.tuteehub.com/tag/pickles-1154388" style="font-weight:bold;" target="_blank" title="Click to know more about PICKLES">PICKLES</a>, orange juice, vinegar, etc. Substances which taste sour are called acidic. The chemical nature of such <a href="https://interviewquestions.tuteehub.com/tag/substance-1231528" style="font-weight:bold;" target="_blank" title="Click to know more about SUBSTANCE">SUBSTANCE</a> is known as ACIDIC. The word acid comes from Latin ACERE which means sour.</p><p></p><h3><strong>Bases</strong><strong>:</strong><strong>-</strong></h3><p>Taste of base is bitter. Substances which contain base taste bitter. For example: soap or soap <a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a>, baking soda, washing soda, etc. The chemical nature of substances that contain base is known as BASIC.</p><p></p><h3><strong>Indicators</strong><strong>:</strong><strong>-</strong></h3><p>A substance which detects the acidic or basic nature of another substance by change in colour is called acid-base indicator. It is not advisable to taste any substance in laboratory because it can be harmful. Hence, acid-base indicators are used to check if a given substance is acid or base.</p><p></p><h3><strong>Types</strong><strong> </strong><strong>of</strong><strong> </strong><strong>indicators</strong><strong>:</strong><strong>-</strong></h3><p>Indicators can be divided into two types.</p><p></p><p><strong>Natural</strong><strong> </strong><strong>indicator</strong><strong>:</strong><strong>-</strong><strong> </strong>Indicators that are obtained from <a href="https://interviewquestions.tuteehub.com/tag/naturally-2859217" style="font-weight:bold;" target="_blank" title="Click to know more about NATURALLY">NATURALLY</a> occurring substance are called NATURAL INDICATORS. </p><p><strong>Ex</strong><strong>:</strong><strong>-</strong><strong> </strong>litmus, turmeric, China rose, etc.</p><p></p><p><strong>Synthetic</strong><strong> </strong><strong>Indicator</strong><strong>:</strong><strong>-</strong><strong> </strong> Indicators that are made in laboratory are called SYNTHETIC INDICATORS. <strong>Ex</strong><strong>:</strong><strong>-</strong><strong> </strong>phenolphthalein, methyl orange, etc</p></body></html> | |