Question : The compound to which H2 does not add is
Option 1: Biphenyl ethylene
Option 2: Tetraphenyl ethylene
Option 3: Tetra-a-naphthlethylene
Option 4: Tetra-9-phenanthrylethylene
Correct Answer: Tetraphenyl ethylene
Solution : The correct option is Tetraphenyl ethylene.
Tetraphenyl ethylene is a molecule with a distinct chemical structure that can not readily conduct addition reactions with hydrogen gas (H2) like other unsaturated hydrocarbons. This is due to the absence of the normal double or triple bonds seen in many unsaturated hydrocarbons. Tetraphenyl ethylene does not include any double or triple bonds. Each carbon-carbon link in the molecule is a single bond (sigma bond), and it is made up of four phenyl groups bonded to a central carbon atom. H2 does not readily add to tetraphenyl ethylene because there are no multiple bonds to break, and it does not undergo hydrogenation processes in the same manner that alkenes or alkynes do.
Application | Eligibility | Selection Process | Result | Cutoff | Admit Card | Preparation Tips
Question : In Aqua Regia which two acids are mixed in 1:3?
Option 1: HNO3 and HCl
Option 2: HNO3 and H2SO4
Option 3: HNO3 and H2CO3
Option 4: HCl and H2CO3
Question : Supersonic jets cause thinning of which layer?
Option 1: O2 layer
Option 2: O3 layer
Option 3: CO2 layer
Option 4: SO2 layer
Question : Water gas is the combination of:
Option 1: CO and H2
Option 2: CO2 and H2
Option 3: CO and H2O
Option 4: CO2 and CO
Question : In which of the following ions, the colour is not due to d-d transition?
Option 1: [Ti(H2O)6]+3
Option 2: CoF63−
Option 3: MnO4−
Option 4: [Cu(NH3)4]2+
Question : Which of the following pair of compound – general formula is correct? I. Alkenes – CnH2n II. Alkanes – CnH2n-1
Option 1: Only II
Option 2: Only I
Option 3: Neither I nor II
Option 4: Both I and II
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile