raghu Katagall
Quiz by , created over 1 year ago

Quiz on Chemistry, created by raghu Katagall on 11/09/2017.

Eye 1218
Pin 1
Balloon left 0
Tags No tags specified
raghu Katagall
Created by raghu Katagall over 1 year ago
Close
  • Chemistry

    Question 1 of 21

    Medal premium 1

    Which of the following compounds contain all the carbon atoms in the same hybridisation state?

    Select one of the following:

    • H –CΞC-CΞC-H

    • CH3-CΞC-CH3

    • CH2=C=CH2

    • CH2=CHCN

    Question 2 of 21

    Medal premium 1

    1.2g of organic compound liberates ammonia during Kjeldahlization which takes 30ml of 1M HCl . The percentage of nitrogen in organic compound is

    Select one of the following:

    • 30

    • 35

    • 46.67

    • 20.8

    Question 3 of 21

    Medal premium 1

    Which among the following is an ambidient nucleophile?

    Select one of the following:

    • H2O

    • RCN

    • CN-

    • NH3

    Question 4 of 21

    Medal premium 1

    Alkyl groups are ortho-para directing groups because of

    Select one of the following:

    • Steric effect

    • Electromeric effect

    • Hyperconjugation effect

    • All the three

    Question 5 of 21

    Medal premium 1

    In which of the following, functional isomerism is not possible?

    Select one of the following:

    • Alcohols

    • Aldehydes

    • Alkyl halides

    • Cyanides

    Question 6 of 21

    Medal premium 1

    The IUPAC name of CH3-CO-CH2-CH2-COOH

    Select one of the following:

    • 1-hydroxy pentane-1,4-dione

    • 1,4-dioxopentanol

    • 1-carboxybutan-3-one

    • 4-oxopentanoic acid

    Question 7 of 21

    Medal premium 1

    Vitamin B12 contains

    Select one of the following:

    • Co

    • Mg

    • Mn

    • Fe

    Question 8 of 21

    Medal premium 1

    Arrange the following carbanions in order of their decreasing stability.
    (CH3)3C- -CCl3 (CH3)2CH- C6H5-CH2-

    Select one of the following:

    • (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-

    Question 9 of 21

    Medal premium 1

    The reason for the greater range of oxidation states in actinoids is attributed to,

    Select one of the following:

    • Actinoids contraction

    • 5f,6dand 7s levels having comparable energies

    • 4f and 5d levels being close in energies

    • The radioactive nature of actinoids

    Question 10 of 21

    Medal premium 1

    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?

    Select one of the following:

    • 3d^2

    • 3d^8

    • 3d^7

    • 3d^5

    Question 11 of 21

    Medal premium 1

    Which of the following statements is wrong regarding lanthanoids?

    Select one of the following:

    • 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.

    Question 12 of 21

    Medal premium 1

    Glycosidic linkage is an

    Select one of the following:

    • Amide linkage

    • Ester linkage

    • Ether

    • none of these

    Question 13 of 21

    Medal premium 1

    In chromite ore the oxidation state of iron and chromium are respectively,

    Select one of the following:

    • +3,+2

    • +3,+6

    • +2,+6

    • +2,+3

    Question 14 of 21

    Medal premium 1

    Highest oxidation state of manganese in fluoride is +4 (MnF4) but highest oxidation state in oxides is +7 (Mn2O7) because,

    Select one of the following:

    • 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.

    Question 15 of 21

    Medal premium 1

    Electronic configuration of a transition element ‘X’ in +3 oxidation state is [Ar]3d5. What is its atomic number?

    Select one of the following:

    • 25

    • 26

    • 27

    • 24

    Question 16 of 21

    Medal premium 1

    KMnO4 acts as an oxidizing agent in alkaline medium. When alkaline KMnO4 is treated with KI, iodide ion is oxidized to,

    Select one of the following:

    • I2

    • IO-

    • IO3-

    • IO4-

    Question 17 of 21

    Medal premium 1

    Which of the following sequence is correct regarding field strength of ligands as per spectrochemical series?

    Select one of the following:

    • SCN- < F- < CN- < CO

    • F- < SCN- < CN-< CO

    • CN- < F- < CO< SCN-

    • SCN- < CO <F- <CN-

    Question 18 of 21

    Medal premium 1

    According to crystal field theory M-L bond in a complex is ,

    Select one of the following:

    • Purely ionic

    • purely coordinate

    • purely covalent

    • partially covalent

    Question 19 of 21

    Medal premium 1

    Drugs used for relieving pain are called

    Select one of the following:

    • Antibiotics

    • Analgesics

    • antipyretics

    • anaesthetics

    Question 20 of 21

    Medal premium 1

    Five membered ring structure of glucose is known as

    Select one of the following:

    • Aromatic

    • Pyranose

    • Furanose

    • Baeyer’s structure

    Question 21 of 21

    Medal premium 1

    The most widely used analgesic for severe pain is

    Select one of the following:

    • Aspirin

    • Phenacetin

    • paracetomol

    • morphine

    Icon fullscreen