back to directory
NEET CHEMISTRYGeneralMedium

Question

Which of the following statement is not correct about diborane?

A

There are two 3-centre-2-electron bonds.

B

The four terminal B-H bonds are two centre two electron bonds.

C

The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.

D

Both the Boron atoms are sp2sp^2 hybridised.

Step-by-Step Solution

In diborane (B2H6B_2H_6), each boron atom is sp3sp^3 hybridised, not sp2sp^2. The other statements are correct descriptions of the structure of diborane.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from General. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYfollowingstatementcorrectdiborane

More CHEMISTRY Questions

View all

The pollution due to oxides of sulphur gets enhanced due to the presence of: (a) particulate matter (b) ozone (c) hydrocarbons (d) hydrogen peroxide. Choose the most appropriate answer from the options given below:

A.D, G, R, Q
B.(a), (b), (d) only
C.E, F, G, R, Q
D.D, F, G, R, Q
MediumSolve

Compound X on reaction with $O_3$ followed by $Zn/H_2O$ gives formaldehyde and 2-methylpropanal as products. The compound X is

A.3-Methylbut-1-ene
B.2-Methylbut-1-ene
C.2-Methylbut-2-ene
D.Pent-2-ene
MediumSolve

Given below are two statements: Statement I: In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. $HCl + ZnCl_2$, known as Lucas Reagent. Statement II: Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent. In the light of the above statements, choose the most appropriate answer from the options given below:

A.Both Statement I and Statement II are correct
B.Both Statement I and Statement II are incorrect
C.Statement I is correct but Statement II is incorrect
D.Statement I is incorrect but Statement II is correct
MediumSolve

A dehydration reaction links two glucose molecules to product maltose. If the formula for glucose is $C_6H_{12}O_6$ then what is the formula for maltose?

1.$C_{12}H_{20}O_{10}$
2.$C_{12}H_{24}O_{12}$
3.$C_{12}H_{22}O_{11}$
4.$C_{12}H_{24}O_{11}$
EasySolve

Which of the following $P-V$ curve represents maximum work done?

A.
B.
C.
D.
MediumSolve

The correct sequence of bond enthalpy of 'C—X' bond is :

A.CH_{3} - F < CH_{3} - Cl < CH_{3} - Br < CH_{3} - I
B.CH_{3} - F > CH_{3} - Cl > CH_{3} - Br > CH_{3} - I
C.CH_{3} - F < CH_{3} - Cl > CH_{3} - Br > CH_{3} - I
D.CH_{3} - Cl > CH_{3} - F > CH_{3} - Br > CH_{3} - I
MediumSolve

Match List -I with List -II. List -I (Drug class): (a) Antacids, (b) Antihistamines, (c) Analgesics, (d) Antimicrobials. List -II (Drug molecule): (i) Salvarsan, (ii) Morphine, (iii) Cimetidine, (iv) Seldane. Choose the correct answer from the options given below:

A.(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
B.(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
C.(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
D.(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
MediumSolve

Identify the final product [D] obtained in the following sequence of reactions. $CH_3CHO \xrightarrow[ii) H_3O^+]{i) LiAlH_4} [A] \xrightarrow{H_2SO_4, \Delta} [B] \xrightarrow{HBr} [C] \xrightarrow{Na/dry ether} [D]$

A.
B.
C.
D.
MediumSolve

Why 32,000+ students choose TopperSquare

Everything you need to crack NEET

15,000+ Chapter MCQs

Physics, Chemistry, Biology — chapter-wise, topic-wise practice

AI Performance Analytics

Know your weak topics. Get a personalised study plan.

Full NEET Mock Tests

180 questions, timed, with detailed score analysis

PYQ Sets 2010–2024

15 years of past papers with solved explanations

Start Practising Free

No credit card · 30-second signup · Free forever plan included

This neet chemistry practice question is part of the TopperSquare free question bank. TopperSquare offers 15,000+ chapter-wise NEET MCQs across Physics, Chemistry, and Biology with detailed step-by-step explanations, full mock tests, NEET PYQs (2010–2024), and an AI-powered performance analytics dashboard. browse all neet practice questions → · practice chemistry sets →

Explore more subjects:Physics MCQs•Chemistry MCQs•Biology MCQs•Botany MCQs•Zoology MCQs•NEET Mock Tests•NEET PYQs