Given below are the | Environmental Chemistry| JEE MAIN 2021

Competishun Header

JEE MAIN 2021

22-07-2021 - S2

Question

Given below are the statements about diborane
(a) Diborane is prepared by the oxidation of NaBH4 with I2
(b) Each boron atom is in sp2 hybridized state
(c) Diborane has one bridged 3 centre-2-electron bond
(d) Diborane is a planar molecule
The option with correct statement(s) is -

Select the correct option:

A

(c) and (d) only

B

(a) only

C

(c) only

D

(a) and (b) only

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Chemistry

Medium

Start Preparing for JEE with Competishun

Filters 0

Showing 18 questions

An unpolarized light is incident on the plane interface of air-dielectric medium shown in figure. If the incident angle is...

JEE MainPhysicsHard

View Solution→

The voltage and the current between A and B points shown in the circuit are _____.

JEE MainPhysicsMedium

View Solution→

QJEE Main 20262026

For the given molecule, "x", the preferred site for the attack of the electrophile is :

JEE MainChemistryEasy

View Solution→

QJEE Mains 20262026

In IUPAC nomenclature, the correct order of decreasing priority of functional group is:

JEE MainChemistryEasy

View Solution→

QJEE Main 20262026

Given below are two statements:
Statement (I) : Benzyl chloride reacts faster in $\mathrm{S}_{\mathrm{N}} 1$ mechanism than ethyl chloride.
...

JEE MainPhysicsEasy

View Solution→

Consider a circuit consisting of a capacitor $(20 \mu \mathrm{~F})$, resistor $(100 \Omega)$ and two identical diodes as shown in...

JEE MainPhysicsMedium

View Solution→

Given below are two statements:
Statement (I) : 1, 2, 3-Trihydroxypropane can be separated from water by simple distillation.
Statement...

JEE MainChemistryEasy

View Solution→

An insulated wire is wound so that it forms a flat coil with $\mathrm{N}=200$ turns. The radius of the innermost...

JEE MainPhysicsHard

View Solution→

QJEE Main 20262026

Match List - I with List - II.
List - I List - II

JEE MainChemistryEasy

View Solution→

A parallel plate air capacitor is connected to a battery. The plates are pulled apart at uniform speed $v$. If...

JEE MainPhysicsMedium

View Solution→

A rod of length 10 cm lies along the principle axis of a concave mirror of focal length 10 cm...

JEE MainPhysicsEasy

View Solution→

Two 4 bits binary numbers, $\mathrm{A}=1101$ and $\mathrm{B}=1010$ are given in the inputs of a logic circuit shown in figure...

JEE MainPhysicsEasy

View Solution→

A voltmeter with internal resistance of $x \Omega$ can be used to measure upto 20 V . In order to...

JEE MainPhysicsEasy

View Solution→

One gas of $n_1$ mole of molecules at temperature $T_1$, volume $V_1$, and pressure $P_1$, and another gas of $n_2$...

JEE MainPhysicsEasy

View Solution→

A string A of length 0.314 m and Young's modulus $2 \times 10^{10} \mathrm{~N} / \mathrm{m}^2$ is connected to another...

JEE MainPhysicsMedium

View Solution→

A slit of width $a$ is illuminated by light of wavelength $\lambda$. The linear separation between $1^{\text {st }}$ and...

JEE MainPhysicsEasy

View Solution→

The graph shows variation of stopping potential $V_0$ with the frequency $v$ of the incident radiation for three photosensitive metals...

JEE MainPhysicsEasy

View Solution→

The two projectiles are projected with the same initial velocities at the $15^{\circ}$ and $30^{\circ}$ with respect to the horizontal....

JEE MainPhysicsEasy

View Solution→