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Standard XIII
Chemistry
Introduction to p Block Elements
Choose the in...
Question
Choose the incorrect statement(s) among the following.
निम्नलिखित में से गलत कथन/कथनों का चयन कीजिए।
A
Dichromate ion consists of two tetrahedra sharing one oxygen between them
डाइक्रोमेट आयन में दो चतुष्फलक होते हैं जिनके मध्य एक ऑक्सीजन का साझा होता है
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B
Acidified potassium dichromate oxidises iodine to iodide
अम्लीकृत पोटैशियम डाइक्रोमेट आयोडीन को आयोडाइड में ऑक्सीकृत कर देता है
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C
Iron(III) catalyses the reactions between iodide and persulphate ions
आयोडाइड तथा परसल्फेट आयनों के मध्य अभिक्रिया को आयरन(III) उत्प्रेरित करता है
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D
Many copper(I) compounds are unstable in aqueous solution due to much more negative Δ
hyd
H° of Cu
+
(aq) than Cu
2+
(aq)
Cu
2+
(aq) की तुलना में Cu
+
(aq) के बहुत अधिक ऋणात्मक Δ
जलयोजन
H° के कारण कॉपर (I) के अनेक यौगिक जलीय विलयन में अस्थायी होते हैं
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Solution
The correct option is
D
Many copper(I) compounds are unstable in aqueous solution due to much more negative Δ
hyd
H° of Cu
+
(aq) than Cu
2+
(aq)
Cu
2+
(aq) की तुलना में Cu
+
(aq) के बहुत अधिक ऋणात्मक Δ
जलयोजन
H° के कारण कॉपर (I) के अनेक यौगिक जलीय विलयन में अस्थायी होते हैं
Solutions
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Q.
More than One Answer Type
एक से अधिक उत्तर प्रकार के प्रश्न
Choose the
incorrect
statement(s).
गलत
कथन/कथनों का चयन कीजिए।
Q.
Choose the correct statement(s).
सही कथन/कथनों का चयन कीजिए।
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