11312022
Descrição
Quiz por raghu Katagall, atualizado more than 1 year ago
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Criado por raghu Katagall
quase 7 anos atrás
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Questão 1
Questão
Which of the following compounds contain all the carbon atoms in the same hybridisation state?
Responda
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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
Questão 2
Questão
1.2g of organic compound liberates ammonia during Kjeldahlization which takes 30ml of 1M HCl . The percentage of nitrogen in organic compound is
Responda
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30
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35
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46.67
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20.8
Questão 3
Questão
Which among the following is an ambidient nucleophile?
Responda
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H2O
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RCN
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CN-
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NH3
Questão 4
Questão
Alkyl groups are ortho-para directing groups because of
Responda
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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
Questão 5
Questão
In which of the following, functional isomerism is not possible?
Responda
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Alcohols
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Aldehydes
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Alkyl halides
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Cyanides
Questão 6
Questão
The IUPAC name of CH3-CO-CH2-CH2-COOH
Responda
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1-hydroxy pentane-1,4-dione
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1,4-dioxopentanol
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1-carboxybutan-3-one
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4-oxopentanoic acid
Questão 7
Questão
Vitamin B12 contains
Responda
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Co
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Mg
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Mn
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Fe
Questão 8
Questão
Arrange the following carbanions in order of their decreasing stability.
(CH3)3C- -CCl3 (CH3)2CH- C6H5-CH2-
Responda
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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-
Questão 9
Questão
The reason for the greater range of oxidation states in actinoids is attributed to,
Responda
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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
Questão 10
Questão
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?
Responda
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3d^2
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3d^8
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3d^7
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3d^5
Questão 11
Questão
Which of the following statements is wrong regarding lanthanoids?
Responda
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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.
Questão 12
Questão
Glycosidic linkage is an
Responda
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Amide linkage
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Ester linkage
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Ether
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none of these
Questão 13
Questão
In chromite ore the oxidation state of iron and chromium are respectively,
Responda
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+3,+2
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+3,+6
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+2,+6
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+2,+3
Questão 14
Questão
Highest oxidation state of manganese in fluoride is +4 (MnF4) but highest oxidation state in oxides is +7 (Mn2O7) because,
Responda
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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.
Questão 15
Questão
Electronic configuration of a transition element ‘X’ in +3 oxidation state is [Ar]3d5. What is its atomic number?
Responda
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25
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26
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27
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24
Questão 16
Questão
KMnO4 acts as an oxidizing agent in alkaline medium. When alkaline KMnO4 is treated with KI, iodide ion is oxidized to,
Responda
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I2
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IO-
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IO3-
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IO4-
Questão 17
Questão
Which of the following sequence is correct regarding field strength of ligands as per spectrochemical series?
Responda
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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-
Questão 18
Questão
According to crystal field theory M-L bond in a complex is ,
Responda
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Purely ionic
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purely coordinate
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purely covalent
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partially covalent
Questão 19
Questão
Drugs used for relieving pain are called
Responda
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Antibiotics
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Analgesics
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antipyretics
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anaesthetics
Questão 20
Questão
Five membered ring structure of glucose is known as
Responda
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Aromatic
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Pyranose
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Furanose
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Baeyer’s structure
Questão 21
Questão
The most widely used analgesic for severe pain is
Responda
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Aspirin
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Phenacetin
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paracetomol
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morphine
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