Chemistry MCQs for NEET — Practice Questions with Answers

it does not contain plane of symmetry

 $\text{'}\mathrm{Cl}-\widehat{\mathrm{Se}}-\mathrm{Cl}\text{'} \mathrm{bond} \mathrm{is} \mathrm{greater} \mathrm{than} \text{'}\mathrm{Cl}-\widehat{\mathrm{Se}}-\mathrm{O}\text{'} \mathrm{bond} \mathrm{angle}$

Lone pair has greater than 33.3% s-character

Central atom used one d-orbital in bonding

 $C{H}_3 COOH and H_{2}O$

Phenol and $C{H}_4$

 $CH{F}_3 and acetone$

 $P{H}_{3 }and HF$

If electronegativity of surrounding element 'X' is less than 2.5, then central carbon atom used almost 33% s-character in their hybrid bonding orbitals

 If electronegativity of surrounding element 'X' is more than 2.5, then central carbon atom used almost 25% s-character in their hybrid bonding orbitals

If 'X' is 'F', then species should be polar and pyramidal

If 'X' is H, then species should be polar and planar

F is more electronegativity than oxygen 

Be is more electronegativity than oxygen 

 $H_{2}O$ molecule is linear and Be$F_2$ is bent 

 $Be{F}_2$ molecule is linear and $H_{2}O$ is bent

14         

12         

8         

16

(i) and (iv) 

(ii) and (iv) 

(iii) and (iv) 

(i) , (iii) and (iv) 

In singlet carbene, carbon is $s{p}_2$-hybridized whereas in triplet carbene, carbon is sp-hybridized

Triplet carbene is less stable than singlet carbene

Stability of halocarbenes is: CHF>CHCL>CHBr

None of the above

 $C{O}_2 and H_{2}O$

 $B{F}_{3 }and PC{L}_3$

 $S{O}_2 and SC{L}_2$

 $C{S}_{2 }and S{O}_3$

HCl

BrCl 

 $OC{l}_2$

 $SC{l}_2$

 ${\mathrm{I}}_3^{-}, {\mathrm{CH}}_3, {\mathrm{CLO}}_3^{-}, {\mathrm{SiF}}_6^{2-}$

 ${\mathrm{I}}_3^{+}, {\mathrm{ICl}}_4^{-}, {\mathrm{Al}}_2{\mathrm{Cl}}_6, {\mathrm{TeCl}}_4$

 ${\mathrm{SCl}}_2, {\mathrm{N}}_2{\mathrm{O}}_5, {\mathrm{SF}}_4,{\mathrm{XeOF}}_4$

 ${\mathrm{I}}_2{\mathrm{Cl}}_6, {\mathrm{XeF}}_2, {\mathrm{BrF}}_4^{-}$