1
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the incorrect statement from the following:

A

Carbon has the ability to form $p \pi-p \pi$ multiple bond with itself.

B

$\mathrm{ECl}_3(\mathrm{E}=\mathrm{B}$ and Al$)$ is a monomer when $\mathrm{E}=\mathrm{B}$ and a dimer when $\mathrm{E}=\mathrm{Al}$.

C

The order of catenation property of Group 14 elements is $\mathrm{C} \gg \mathrm{Si}>\mathrm{Ge} \approx \mathrm{Sn}$.

D

Oxygen exhibits only -2 oxidation state.

2
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

$$ \text { The correct formal charges on oxygen atoms numbered } 2,1 \text { and } 3 \text { respectively are : } $$

NEET 2026 Chemistry - Chemical Bonding and Molecular Structure Question 2 English
A

$-1,0,+1$

B

$0,+1,-1$

C

$0,0,0$

D

$+1,0,-1$

3
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Phenolphthalein is used as an indicator for the titration of sodium hydroxide solution against a standard solution of oxalic acid. The colour change that is observed at an alkaline pH close to the equivalence point during this titration is:

A

pinkish red to yellow

B

yellow to pinkish red

C

pink to colourless

D

colourless to pink

4
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

When $1 \mathrm{dm}^3$ of CO2 gas is passed over hot coke the volume of gaseous mixture after complete reaction at STP becomes $1.4 \mathrm{dm}^3$. The composition of the gaseous mixture at STP is :

A

$0.8 \mathrm{dm}^3$ of $\mathrm{CO}, 0.8 \mathrm{dm}^3$ of $\mathrm{CO}_2$

B

$0.8 \mathrm{dm}^3$ of $\mathrm{CO}, 0.6 \mathrm{dm}^3$ of $\mathrm{CO}_2$

C

$0.6 \mathrm{dm}^3$ of $\mathrm{CO}, 0.8 \mathrm{dm}^3$ of $\mathrm{CO}_2$

D

$0.6 \mathrm{dm}^3$ of $\mathrm{CO}, 0.4 \mathrm{dm}^3$ of $\mathrm{CO}_2$