Ncert Solutions Chemistry Class 11th
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New answer posted
a month agoContributor-Level 10
Helium is used as a diluent for oxygen in modern diving apparatus because of its very low solubility in blood.
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a month agoNew answer posted
a month agoContributor-Level 10
In case, nitrogen and sulphur both are present in an organic compound, sodium thiocyanate is formed.
Na + C + N + S → NaSCN
Which further reacts as:
Fe³? + SCN? → [Fe (SCN)]²?
(Blood red color)
New answer posted
a month agoContributor-Level 10
Coke- reducing agent
Diamond- sp³ carbons
Fullerenes- cage like structure
Graphite- used as lubricant
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a month agoContributor-Level 10
Tl? ³ is less stable than Tl? ¹ (inert pair effect). Going down the group 13, stability of lower oxidation state increases. In case of B, Al, Ga and In, higher O.S. +3 remains more stable than lower O.S. +1 . But, in last stable element, thallium (Tl), lower O.S. +1 become more stable than higher O.S. +3 .
New answer posted
a month agoContributor-Level 10
The para-magnetism of solution of alkali metals in liquid ammonia and its deep blue color is due to ammoniated electrons. Which absorb energy in visible region of light.
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a month agoContributor-Level 10
Ca plays important role in Neuromuscular function and interneuronal transmission. The daily requirement of Mg and Ca in the human body is estimated to be 200 – 300mg. All enzymes that utilise ATP in phosphate transfer require Mg as the cofactor. The bone in human body is NOT an inert and unchanging substance.
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a month agoContributor-Level 10
A, B and C are correct statements. The H-H bond dissociation enthalpy is the highest for a single bond between two atoms of any element. Hydrogen does not reduce oxides of metals that are more active than iron.
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a month ago
Contributor-Level 10
PV = nRT
P = nRT . (1/V)
Plot of P vs (1/V) would be straight line passing through origin having slope = nRT.
At high temperatures, P vs (1/V) would have greater slope.
New answer posted
a month agoContributor-Level 10
Covalent bonding is NOT an intermolecular force while rest all are considered as intermolecular forces.
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