Frage 1
Frage
Which of the following compounds contain all the carbon atoms in the same hybridisation state?
Antworten
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H –CΞC-CΞC-H
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CH3-CΞC-CH3
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CH2=C=CH2
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CH2=CHCN
Frage 2
Frage
1.2g of organic compound liberates ammonia during Kjeldahlization which takes 30ml of 1M HCl . The percentage of nitrogen in organic compound is
Frage 3
Frage
Which among the following is an ambidient nucleophile?
Frage 4
Frage
Alkyl groups are ortho-para directing groups because of
Antworten
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Steric effect
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Electromeric effect
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Hyperconjugation effect
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All the three
Frage 5
Frage
In which of the following, functional isomerism is not possible?
Antworten
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Alcohols
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Aldehydes
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Alkyl halides
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Cyanides
Frage 6
Frage
The IUPAC name of CH3-CO-CH2-CH2-COOH
Frage 7
Frage
Vitamin B12 contains
Frage 8
Frage
Arrange the following carbanions in order of their decreasing stability.
(CH3)3C- -CCl3 (CH3)2CH- C6H5-CH2-
Antworten
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(CH3)2CH-> -CCl3 > C6H5-CH2-> (CH3)3C-
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-CCl3 > C6H5-CH2- > (CH3)2CH- > (CH3)3C-
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(CH3)3C- > (CH3)2CH- > C6H5-CH2- > -CCl3
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C6H5-CH2- > -CCl3 > (CH3)3C- > (CH3)2CH-
Frage 9
Frage
The reason for the greater range of oxidation states in actinoids is attributed to,
Antworten
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Actinoids contraction
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5f,6dand 7s levels having comparable energies
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4f and 5d levels being close in energies
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The radioactive nature of actinoids
Frage 10
Frage
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?
Frage 11
Frage
Which of the following statements is wrong regarding lanthanoids?
Antworten
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Ln(III) compounds are predominantly ionic in nature
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Ln(III) hydroxides are mainly basic in nature
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The ionic size of Ln (III) ions decreases with increase of atomic number
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Ln(III) compounds are generally colourless.
Frage 12
Frage
Glycosidic linkage is an
Antworten
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Amide linkage
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Ester linkage
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Ether
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none of these
Frage 13
Frage
In chromite ore the oxidation state of iron and chromium are respectively,
Frage 14
Frage
Highest oxidation state of manganese in fluoride is +4 (MnF4) but highest oxidation state in oxides is +7 (Mn2O7) because,
Antworten
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Fluorine is more electronegative than oxygen
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Fluorine does not possess d-orbitals
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Fluorine stabilizes lower oxidation state
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In covalent compounds fluorine can form single bond only while oxygen forms double bond.
Frage 15
Frage
Electronic configuration of a transition element ‘X’ in +3 oxidation state is [Ar]3d5. What is its atomic number?
Frage 16
Frage
KMnO4 acts as an oxidizing agent in alkaline medium. When alkaline KMnO4 is treated with KI, iodide ion is oxidized to,
Frage 17
Frage
Which of the following sequence is correct regarding field strength of ligands as per spectrochemical series?
Antworten
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SCN- < F- < CN- < CO
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F- < SCN- < CN-< CO
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CN- < F- < CO< SCN-
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SCN- < CO <F- <CN-
Frage 18
Frage
According to crystal field theory M-L bond in a complex is ,
Antworten
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Purely ionic
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purely coordinate
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purely covalent
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partially covalent
Frage 19
Frage
Drugs used for relieving pain are called
Antworten
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Antibiotics
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Analgesics
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antipyretics
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anaesthetics
Frage 20
Frage
Five membered ring structure of glucose is known as
Antworten
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Aromatic
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Pyranose
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Furanose
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Baeyer’s structure
Frage 21
Frage
The most widely used analgesic for severe pain is
Antworten
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Aspirin
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Phenacetin
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paracetomol
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morphine