06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207743
कोलॉइडी आयरन \((III) \) हाइड्रॉक्साइड और कोलॉइडी गोल्ड में विक्षेपण प्रावस्था क्रमश: धन आवेशित और ऋण आवेशित है, निम्नलिखित में से कौनसा कथन सत्य नहीं है
1 मैग्नीशियम क्लोराइड विलयन, आयरन \( (III)\) हाइड्रॉक्साइड सॉल की अपेक्षा गोल्ड सॉल को अधिक स्कंदित करता है
2 सोडियम सल्फेट विलयन, दोनों सॉलों में स्कंदन करता है
3 सॉलों के मिलाने से कोई प्रभाव नहीं होता है
4 दोनों सॉलों में विद्युत कण संचलन द्वारा स्कंदन कर सकते हैं
Explanation:
\((A)\) Magnesium chloride solution coagulates a negatively charged gold solution readily than positively charged iron \((III)\) hydroxide solution. In Magnesium chloride, the charge on cation is twice the charge on the anion. Higher is the charge on ion, higher will be its coagulating power. Hence, statement \(A\) is correct. \((B)\) Sodium sulphate solution causes coagulation in both solutions. It provides sodium ions which coagulate negatively charged gold sol and sulphate ions coagulate positively charged iron \((III)\) hydroxide sol. Hence, statement \(B\) is correct. \((C)\) The dispersed phase in colloidal iron \((III)\) hydroxide and colloidal gold is positively and negatively charged respectively. When two solutions are mixed, they will affect mutual coagulation. This is because the charge on one sol is neutralized by the opposite charge on the other sol. Hence, statement \(C\) is not correct. \((D)\) Coagulation in both solutions can be brought about by electrophoresis. During electrophoresis, an electric current is passed through a colloidal solution and the experiment is arranged so that only the particles can move (and no liquid medium). Hence, the statement \(D\) is correct.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207744
निम्नलिखित में से किस द्रव का पृष्ठ तनाव अधिकतम है
1 \({C_2}{H_5}OH\)
2 \({H_2}O\)
3 \({C_6}{H_6}\)
4 \(C{H_3}OH\)
Explanation:
The water molecules attract one another due to its polar property, the hydrogen ends which are positive in comparison with the negative end of oxygen which makes water to stick together so water having maximum surface tension.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207745
निम्नलिखित में से कौन एक जलीय विलयन में निश्चित सांद्रता के ऊपर मिसेल बनाता है
1 यूरिया
2 डोडिसाइल ट्राइमिथाइल अमोनियम क्लोराइड
3 पाइरिडीनियम क्लोराइड
4 ग्लूकोज
Explanation:
Above a certain concentration, dodecyl trimethyl ammonium chloride forms micelles in an aqueous solution. A cationic detergent is dodecyl trimethyl ammonium chloride. Above a certain concentration, soaps and detergents form micelles in an aqueous solution.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207743
कोलॉइडी आयरन \((III) \) हाइड्रॉक्साइड और कोलॉइडी गोल्ड में विक्षेपण प्रावस्था क्रमश: धन आवेशित और ऋण आवेशित है, निम्नलिखित में से कौनसा कथन सत्य नहीं है
1 मैग्नीशियम क्लोराइड विलयन, आयरन \( (III)\) हाइड्रॉक्साइड सॉल की अपेक्षा गोल्ड सॉल को अधिक स्कंदित करता है
2 सोडियम सल्फेट विलयन, दोनों सॉलों में स्कंदन करता है
3 सॉलों के मिलाने से कोई प्रभाव नहीं होता है
4 दोनों सॉलों में विद्युत कण संचलन द्वारा स्कंदन कर सकते हैं
Explanation:
\((A)\) Magnesium chloride solution coagulates a negatively charged gold solution readily than positively charged iron \((III)\) hydroxide solution. In Magnesium chloride, the charge on cation is twice the charge on the anion. Higher is the charge on ion, higher will be its coagulating power. Hence, statement \(A\) is correct. \((B)\) Sodium sulphate solution causes coagulation in both solutions. It provides sodium ions which coagulate negatively charged gold sol and sulphate ions coagulate positively charged iron \((III)\) hydroxide sol. Hence, statement \(B\) is correct. \((C)\) The dispersed phase in colloidal iron \((III)\) hydroxide and colloidal gold is positively and negatively charged respectively. When two solutions are mixed, they will affect mutual coagulation. This is because the charge on one sol is neutralized by the opposite charge on the other sol. Hence, statement \(C\) is not correct. \((D)\) Coagulation in both solutions can be brought about by electrophoresis. During electrophoresis, an electric current is passed through a colloidal solution and the experiment is arranged so that only the particles can move (and no liquid medium). Hence, the statement \(D\) is correct.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207744
निम्नलिखित में से किस द्रव का पृष्ठ तनाव अधिकतम है
1 \({C_2}{H_5}OH\)
2 \({H_2}O\)
3 \({C_6}{H_6}\)
4 \(C{H_3}OH\)
Explanation:
The water molecules attract one another due to its polar property, the hydrogen ends which are positive in comparison with the negative end of oxygen which makes water to stick together so water having maximum surface tension.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207745
निम्नलिखित में से कौन एक जलीय विलयन में निश्चित सांद्रता के ऊपर मिसेल बनाता है
1 यूरिया
2 डोडिसाइल ट्राइमिथाइल अमोनियम क्लोराइड
3 पाइरिडीनियम क्लोराइड
4 ग्लूकोज
Explanation:
Above a certain concentration, dodecyl trimethyl ammonium chloride forms micelles in an aqueous solution. A cationic detergent is dodecyl trimethyl ammonium chloride. Above a certain concentration, soaps and detergents form micelles in an aqueous solution.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207743
कोलॉइडी आयरन \((III) \) हाइड्रॉक्साइड और कोलॉइडी गोल्ड में विक्षेपण प्रावस्था क्रमश: धन आवेशित और ऋण आवेशित है, निम्नलिखित में से कौनसा कथन सत्य नहीं है
1 मैग्नीशियम क्लोराइड विलयन, आयरन \( (III)\) हाइड्रॉक्साइड सॉल की अपेक्षा गोल्ड सॉल को अधिक स्कंदित करता है
2 सोडियम सल्फेट विलयन, दोनों सॉलों में स्कंदन करता है
3 सॉलों के मिलाने से कोई प्रभाव नहीं होता है
4 दोनों सॉलों में विद्युत कण संचलन द्वारा स्कंदन कर सकते हैं
Explanation:
\((A)\) Magnesium chloride solution coagulates a negatively charged gold solution readily than positively charged iron \((III)\) hydroxide solution. In Magnesium chloride, the charge on cation is twice the charge on the anion. Higher is the charge on ion, higher will be its coagulating power. Hence, statement \(A\) is correct. \((B)\) Sodium sulphate solution causes coagulation in both solutions. It provides sodium ions which coagulate negatively charged gold sol and sulphate ions coagulate positively charged iron \((III)\) hydroxide sol. Hence, statement \(B\) is correct. \((C)\) The dispersed phase in colloidal iron \((III)\) hydroxide and colloidal gold is positively and negatively charged respectively. When two solutions are mixed, they will affect mutual coagulation. This is because the charge on one sol is neutralized by the opposite charge on the other sol. Hence, statement \(C\) is not correct. \((D)\) Coagulation in both solutions can be brought about by electrophoresis. During electrophoresis, an electric current is passed through a colloidal solution and the experiment is arranged so that only the particles can move (and no liquid medium). Hence, the statement \(D\) is correct.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207744
निम्नलिखित में से किस द्रव का पृष्ठ तनाव अधिकतम है
1 \({C_2}{H_5}OH\)
2 \({H_2}O\)
3 \({C_6}{H_6}\)
4 \(C{H_3}OH\)
Explanation:
The water molecules attract one another due to its polar property, the hydrogen ends which are positive in comparison with the negative end of oxygen which makes water to stick together so water having maximum surface tension.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207745
निम्नलिखित में से कौन एक जलीय विलयन में निश्चित सांद्रता के ऊपर मिसेल बनाता है
1 यूरिया
2 डोडिसाइल ट्राइमिथाइल अमोनियम क्लोराइड
3 पाइरिडीनियम क्लोराइड
4 ग्लूकोज
Explanation:
Above a certain concentration, dodecyl trimethyl ammonium chloride forms micelles in an aqueous solution. A cationic detergent is dodecyl trimethyl ammonium chloride. Above a certain concentration, soaps and detergents form micelles in an aqueous solution.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207743
कोलॉइडी आयरन \((III) \) हाइड्रॉक्साइड और कोलॉइडी गोल्ड में विक्षेपण प्रावस्था क्रमश: धन आवेशित और ऋण आवेशित है, निम्नलिखित में से कौनसा कथन सत्य नहीं है
1 मैग्नीशियम क्लोराइड विलयन, आयरन \( (III)\) हाइड्रॉक्साइड सॉल की अपेक्षा गोल्ड सॉल को अधिक स्कंदित करता है
2 सोडियम सल्फेट विलयन, दोनों सॉलों में स्कंदन करता है
3 सॉलों के मिलाने से कोई प्रभाव नहीं होता है
4 दोनों सॉलों में विद्युत कण संचलन द्वारा स्कंदन कर सकते हैं
Explanation:
\((A)\) Magnesium chloride solution coagulates a negatively charged gold solution readily than positively charged iron \((III)\) hydroxide solution. In Magnesium chloride, the charge on cation is twice the charge on the anion. Higher is the charge on ion, higher will be its coagulating power. Hence, statement \(A\) is correct. \((B)\) Sodium sulphate solution causes coagulation in both solutions. It provides sodium ions which coagulate negatively charged gold sol and sulphate ions coagulate positively charged iron \((III)\) hydroxide sol. Hence, statement \(B\) is correct. \((C)\) The dispersed phase in colloidal iron \((III)\) hydroxide and colloidal gold is positively and negatively charged respectively. When two solutions are mixed, they will affect mutual coagulation. This is because the charge on one sol is neutralized by the opposite charge on the other sol. Hence, statement \(C\) is not correct. \((D)\) Coagulation in both solutions can be brought about by electrophoresis. During electrophoresis, an electric current is passed through a colloidal solution and the experiment is arranged so that only the particles can move (and no liquid medium). Hence, the statement \(D\) is correct.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207744
निम्नलिखित में से किस द्रव का पृष्ठ तनाव अधिकतम है
1 \({C_2}{H_5}OH\)
2 \({H_2}O\)
3 \({C_6}{H_6}\)
4 \(C{H_3}OH\)
Explanation:
The water molecules attract one another due to its polar property, the hydrogen ends which are positive in comparison with the negative end of oxygen which makes water to stick together so water having maximum surface tension.
06. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS (HM)
207745
निम्नलिखित में से कौन एक जलीय विलयन में निश्चित सांद्रता के ऊपर मिसेल बनाता है
1 यूरिया
2 डोडिसाइल ट्राइमिथाइल अमोनियम क्लोराइड
3 पाइरिडीनियम क्लोराइड
4 ग्लूकोज
Explanation:
Above a certain concentration, dodecyl trimethyl ammonium chloride forms micelles in an aqueous solution. A cationic detergent is dodecyl trimethyl ammonium chloride. Above a certain concentration, soaps and detergents form micelles in an aqueous solution.
