Which of the following statements is incorrec | vedclass

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

Question

(B) $1$. Calamine is $ZnCO_3$ and siderite is $FeCO_3$. Both are carbonate ores. (Correct)$2$. Argentite is $Ag_2S$ (sulphide) and cuprite is $Cu_2O$

Vedclass · Accepted Answer

Argentite and cuprite are oxide ores.

Vedclass · Answer

(B) $1$. Calamine is $ZnCO_3$ and siderite is $FeCO_3$. Both are carbonate ores. (Correct)$2$. Argentite is $Ag_2S$ (sulphide) and cuprite is $Cu_2O$ (oxide). Since argentite is a sulphide ore,the statement that both are oxide ores is incorrect. (Incorrect)$3$. Zinc blende is $ZnS$ and iron pyrites is $FeS_2$. Both are sulphide ores. (Correct)$4$. Malachite is $Cu(OH)_2 \cdot CuCO_3$ and azurite is $Cu(OH)_2 \cdot 2CuCO_3$. Both are copper ores. (Correct)Therefore,the incorrect statement is $B$.

Which of the following statements is incorrect?

Similar Questions

Metals are usually not found as nitrates in their ores. Out of the following two ($I$ and $II$) reasons,which is/are true for the above observation?
$I.$ Metal nitrates are highly unstable.
$II.$ Metal nitrates are highly soluble in water.

Cryolite is

The region in which main metals are found in the Earth is called:

The chief impurity present in red bauxite is:

$ACl_2$ (excess) + $BCl_2$ $\rightarrow$ $ACl_4$ + $B \downarrow$
$BO \xrightarrow[\Delta]{> 400 \ ^oC} \frac{1}{2} O_2 + B$
If $A$ and $B$ are metals,then the ore of $B$ would be:

Vedclass Test Series

Exam Paper Generator

Online Exam Module