MCQ
Which of the following is correct
- ✓Gun metal :$Cu + Zn + Sn$
- BDuralumin : $Al + Cu + Mg + Ag$
- CGerman silver : $Cu + Zn + C$
- DSolder : $Pb + Al$
✓
Answer
Correct option: A.
Gun metal :$Cu + Zn + Sn$
a
(a)Gun metal contains $Cu (88\%), Zn (2\%), Sn(10\%), Pb (0.5\%)$
(a)Gun metal contains $Cu (88\%), Zn (2\%), Sn(10\%), Pb (0.5\%)$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Among the following statements, the correct statement about the half-life period for a first order reaction is
When $Zn$ piece is kept in $CuS{O_4}$ solution, the copper get precipitated due to standard potential of zinc is
→In the reaction, the acid obtained will be
→$CH_3CHO + HCN \to CH_3CH(OH)CN \xrightarrow{H-OH} CH_3CH(OH)COOH$
In a Ostwald process
→$N{H_3} + {O_2}\xrightarrow[{Pt}]{\Delta }x + {H_2}O$
${x} + {O_2} \to y$
$y + {H_2}O{\text{(excess)}} \to {\text{x + z}}$
The incorrect option is
Nitrobenzene when reduced with tin and hydrochloric acid, i.e., in acidic medium, the product formes is:
$X$ can be
→False statement is
Nucleophilic addition reaction will be most favoured in
Which of the following compounds corresponds Van't Hoff factor $'i'$ to be equal to $2$ for dilute solution
→Which cell will measure standard electrode potential of copper electrode?