Which of the following compounds contain all the carbon atoms in the same hybridisation state?
1.2g of organic compound liberates ammonia during Kjeldahlization which takes 30ml of 1M HCl . The percentage of nitrogen in organic compound is
Which among the following is an ambidient nucleophile?
Alkyl groups are ortho-para directing groups because of
All the three
In which of the following, functional isomerism is not possible?
The IUPAC name of CH3-CO-CH2-CH2-COOH
Vitamin B12 contains
Arrange the following carbanions in order of their decreasing stability.
(CH3)3C- -CCl3 (CH3)2CH- C6H5-CH2-
(CH3)2CH-> -CCl3 > C6H5-CH2-> (CH3)3C-
-CCl3 > C6H5-CH2- > (CH3)2CH- > (CH3)3C-
(CH3)3C- > (CH3)2CH- > C6H5-CH2- > -CCl3
C6H5-CH2- > -CCl3 > (CH3)3C- > (CH3)2CH-
The reason for the greater range of oxidation states in actinoids is attributed to,
5f,6dand 7s levels having comparable energies
4f and 5d levels being close in energies
The radioactive nature of actinoids
The magnetic nature of the element depends on the presence of unpaired electrons . Identify the configuration of the transition element which shows highest magnetic moment?
Which of the following statements is wrong regarding lanthanoids?
Ln(III) compounds are predominantly ionic in nature
Ln(III) hydroxides are mainly basic in nature
The ionic size of Ln (III) ions decreases with increase of atomic number
Ln(III) compounds are generally colourless.
Glycosidic linkage is an
none of these
In chromite ore the oxidation state of iron and chromium are respectively,
Highest oxidation state of manganese in fluoride is +4 (MnF4) but highest oxidation state in oxides is +7 (Mn2O7) because,
Fluorine is more electronegative than oxygen
Fluorine does not possess d-orbitals
Fluorine stabilizes lower oxidation state
In covalent compounds fluorine can form single bond only while oxygen forms double bond.
Electronic configuration of a transition element ‘X’ in +3 oxidation state is [Ar]3d5. What is its atomic number?
KMnO4 acts as an oxidizing agent in alkaline medium. When alkaline KMnO4 is treated with KI, iodide ion is oxidized to,
Which of the following sequence is correct regarding field strength of ligands as per spectrochemical series?
SCN- < F- < CN- < CO
F- < SCN- < CN-< CO
CN- < F- < CO< SCN-
SCN- < CO <F- <CN-
According to crystal field theory M-L bond in a complex is ,
Drugs used for relieving pain are called
Five membered ring structure of glucose is known as
The most widely used analgesic for severe pain is