NEET Chemistry MCQs

4 Cr—O bonds are equivalent

6 Cr—O bonds are equivalent

all Cr—O bonds are equivalent

all Cr—O bonds are equivalent

${\rm{M}}{{\rm{n}}_2}{{\rm{O}}_7}$

${\rm{Mn}}{{\rm{O}}_2}$

${\rm{MnS}}{{\rm{O}}_4}$

${\rm{M}}{{\rm{n}}_2}{{\rm{O}}_3}$

${\rm{Fe}}{\left( {{\rm{CO}}} \right)_5}$ reacts with ${\rm{B}}{{\rm{r}}_2}{\rm{C}}{{\rm{l}}_4}$

Carbonyl complexes are usually formed with transition metals

All transition metals form mono metallic carbonyls

The decomposition of ${\rm{Ni}}{\left( {{\rm{CO}}} \right)_4}$ to give Ni is used in the extraction of Ni by Mond’s process

$+ 2$

$+ 6$

$+ 8$

$+ 4$

Duralumin : ${\rm{Al\;}} + {\rm{\;Cu\;}} + {\rm{\;Mg\;}} + {\rm{\;Ag}}$

German silver: ${\rm{Cu\;}} + {\rm{\;Zn\;}} + {\rm{\;C}}$

Gun metal: ${\rm{Cu\;}} + {\rm{\;Zn\;}} + {\rm{\;Sn}}$

Solder : ${\rm{Pb\;}} + {\rm{\;Al}}$

Decreases

Increases

Remains same

None of these

MnO

${\rm{M}}{{\rm{n}}_2}{{\rm{O}}_7}$

${\rm{M}}{{\rm{n}}_2}{{\rm{O}}_3}$

${\rm{Mn}}{{\rm{O}}_2}$

Ammonia and hydrogen sulfide

Hydrogen and oxygen

Carbon dioxide and sulfur dioxide

Nitrogen and chlorine

Strong oxidising agent

Strong reducing agent

Strong hydrogenating agent

Poor reducing agent

Three series

Six series

Two series

Four series