Which alloy contains $Cu, Sn$ and $Zn$
Which alloy contains $Cu, Sn$ and $Zn$
- A
Gun metal
- B
Solder
- C
Bell metal
- D
German silver
Similar Questions
Which of the comparison regarding $Zn,\,Cd,\,Hg$ is/are incorrect ?
$(I)$ $ZnCl_2$ is ionic whereas $CdCl_2$ and $HgCl_2$ are covalent
$(II)$ $Zn$ and $Cd$ dissolves in dilute acid $(HCl)$ liberating $H_2$ but $Hg$ can not
$(III)$ $Zn$ and $Cd$ forming with ppt. of $Zn(OH)_2$ and $Cd(OH)_2$ but $Hg$ forms coloured ppt. of
$(IV)$ all from $A_2^{2+}$ type ion
Which of the comparison regarding $Zn,\,Cd,\,Hg$ is/are incorrect ?
$(I)$ $ZnCl_2$ is ionic whereas $CdCl_2$ and $HgCl_2$ are covalent
$(II)$ $Zn$ and $Cd$ dissolves in dilute acid $(HCl)$ liberating $H_2$ but $Hg$ can not
$(III)$ $Zn$ and $Cd$ forming with ppt. of $Zn(OH)_2$ and $Cd(OH)_2$ but $Hg$ forms coloured ppt. of
$(IV)$ all from $A_2^{2+}$ type ion
Which of the following is decreasing order of $I.P_2$ ?
Which of the following is decreasing order of $I.P_2$ ?
Which of the following is not a characteristic of transition element
Which of the following is not a characteristic of transition element
Which metal does not give the following reaction $M +$ water or steam $ \to $oxide $ + H$ $\downarrow$
Which metal does not give the following reaction $M +$ water or steam $ \to $oxide $ + H$ $\downarrow$
Ionisation enthalpies of $Ce,\,Pr$ and $Nd$ are higher than $Th,\,Pa$ and $U$. Why ?
Ionisation enthalpies of $Ce,\,Pr$ and $Nd$ are higher than $Th,\,Pa$ and $U$. Why ?