Which of the following statements are NOT cor | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Statement $A$ is correct: Hydrogen acts as a reducing agent for heavy metal oxides.Statement $B$ is correct: Heavy water $(D_2O)$ is used as a tra

Vedclass · Accepted Answer

$D, E$ only

Vedclass · Answer

(D) Statement $A$ is correct: Hydrogen acts as a reducing agent for heavy metal oxides.Statement $B$ is correct: Heavy water $(D_2O)$ is used as a tracer to study reaction mechanisms.Statement $C$ is correct: Hydrogenation of oils produces saturated fats (vanaspati ghee).Statement $D$ is incorrect: The $H-H$ bond dissociation enthalpy $(435.88 \ kJ \ mol^{-1})$ is actually the highest for a single bond between two atoms of any element.Statement $E$ is incorrect: Hydrogen can only reduce oxides of metals that are less active than iron (e.g.,$Cu, Pb, Ag$). It cannot reduce oxides of highly active metals like $Na, K, Ca$.Therefore,statements $D$ and $E$ are incorrect.

Similar Questions

Identify the correct statements from the following:
$I$. $B_2H_6$ is an electron deficient hydride.
$II$. $NH_3$ is an electron rich hydride.
$III$. $NaH$ is a covalent hydride.
$IV$. $YbH_{2.55}$ is an interstitial hydride.

Ortho-hydrogen and para-hydrogen resemble in which of the following properties?

Comment on the reactions of dihydrogen with $(i)$ chlorine,$(ii)$ sodium,and $(iii)$ copper $(II)$ oxide.

Non-stoichiometric hydrides are formed by

The number of neutrons and electrons,respectively,present in the radioactive isotope of hydrogen is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module