Which of the following imparts green colour to the burner flame?
B(OMe)3
Na(OMe)
Al(OPr)3
Sn(OH)2
Assertion : Alcohols are dehydrated to hydrocarbons in the presence of acidic zeolites.
Reason : Zeolites are porous catalysts.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion : Haemoglobin is an oxygen carrier.
Reason : Oxygen binds as O2- to Fe of haemoglobin.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
The reaction of methyltrichloroacetate (Cl3CCO2Me) with sodium methoxide (NaOMe) generates
carbocation
carbene
carbanion
carbon radical
Assertion: Diamond is a bad conductor.
Reason: Graphite is a good conductor.
If both assertion and reason are true and reason is a correct explanation of the assertion.
If both the assertion and reason are true but the reason is not a correct explanation of the assertion.
If the assertion is true but the reason is false.
If both the assertion and reason are false.
B.
If both the assertion and reason are true but the reason is not a correct explanation of the assertion.
In diamond, each carbon atom is in an sp3 hybridized state and linked to four other carbon atoms tetrahedrally by covalent bonds. Since there is no mobile electron present, the diamond is a bad conductor of heat and electricity.
In graphite, each carbon atom is in an sp2 hybridized state and is linked to three other carbon atoms in a hexagonal planar structure. The electrons are free to move throughout the entire layers, therefore graphite is a good conductor of heat and electricity.
The paramagnetic behaviour of B2 is due to the presence of:
two unpaired electrons in MO
two unpaired electrons in MO
two unpaired electrons in MO
two unpaired electrons in MO