Total Number of Question/s - 4730

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  • 1. The Solid State - Quiz


    SAMPLE QUESTIONS


    1. The atomic fraction (d) of tin in broze (fcc) with a density of 7717 kg m-3 and a lattice parameter of 3.903 Å is (Aw Cu = 63.54, Sn = 118.7, 1 amu = 1.66 x 10-27 kg)
    a) 0.01
    b) 0.05
    c) 0.10
    d) 3.8

    2. The electrical comductivity of semiconductor is
    a) 108 ohm-1 cm-1
    b) 10-22 ohm-1 cm-1
    c) In the range of 10-9 to 102ohm-1 cm-1
    d) None of the above

  • 2. Solutions - Quiz


    SAMPLE QUESTIONS


    1. The osmotic pressuere of a non-aqueous solution is measured by
    a) Berkeley and Hartley method
    b) Pfeffer method
    c) Morse and Frazer method
    d) Townend method

    2. A mixture of volatile components A and B has total vapour pressure (in torr)
    P = 254 - 119χA
    where χA is the mole fraction A in mixture. Hence, PA0 and PB0 are (in torr)
    a) 254, 119
    b) 119, 254
    c) 135, 254
    d) 154, 119

  • 3. Electrochemistry - Quiz


    SAMPLE QUESTIONS


    1. An example of a simple fuel cell is
    a) Lead storage battery
    b) Laclanche cell
    c) H2 - O2 cell
    d) All of these

    2. Galvanized iron sheets are coated with
    a) Copper
    b) Nicel
    c) Zinc
    d) Carbon

  • 4. Chemical Kinetics - Quiz


    SAMPLE QUESTIONS


    1. For a hypothetical reaction: A + B → Products , the rate law is r = k[A][B]0. The order of reaction is
    a) 0
    b) 1
    c) 2
    d) 3

    2. The efficiency of an enzyme in catalyzing a reaction is due to its capacity
    a) To form a strong enzyme-substrate complex
    b) To decrease the bond energy of all substrate molecules
    c) To change the shape of the substrate molecules
    d) To lower the activation energy of the reaction

  • 5. Surface Chemistry - Quiz


    SAMPLE QUESTIONS


    1. A freshlt formed ppt of SnO2 is peptized by a small amount of NaOH. These colloidal particles may be represented as
    a) $\left [SnO_{2} \right ]SnO_{3}^{2-};2Na^{\oplus}$
    b) $\left [SnO_{2} \right ]Sn^{4+};O^{2-}$
    c) $\left [SnO_{2} \right ]Na^{\oplus};OH^{\circleddash}$
    d) $\left [SnO_{2} \right ]Sn^{4+};OH^{\circleddash}$

    2. Tyndall effect is not observed in
    a) Suspension
    b) True solution
    c) Emulsions
    d) Colloidal solution

  • 6. General Principles and Processes of Isolation of Elements - Quiz


    SAMPLE QUESTIONS


    1. Which metal is a liquid at room temperature?
    a) Hg
    b) K
    c) Na
    d) Ti

    2. Composition of malachite mineral is
    a) CuCO3 .CuO
    b) Cu(HCO3)2 .Cu(OH)2
    c) 2CuCO3 .Cu(OH)2
    d) CuCO3 .Cu(OH)2

  • 7. The p-Block Elements - Quiz


    SAMPLE QUESTIONS


  • 8. The d-and f-Block Elements - Quiz


    SAMPLE QUESTIONS


    1. Anhydrous cobalt (II) chlorie is blue in colour but on dissolving in water it changes to pink in colour because
    a) Its oxidation state changes
    b) Its magnetic character changes
    c) Its coordination number changes
    d) In water it shows fluorescence

    2. Which among FeO and Fe2O3 is more basic?
    a) FeO
    b) Fe2O3
    c) Both have same basic strength
    d) None of them is basic

  • 9. Coordination Compounds - Quiz


    SAMPLE QUESTIONS


    1. Increasing order EAN of the metals in
    I. [Ni(CN)4]2- II. [Fe(CN)6]3-
    III. [Cu(CN)4]3- is
    a) I < II < III
    b) I < II = III
    c) I < III < II
    d) III < II < I

    2. IUPAC name for [Fe(CO)2(σ - C5H5)(π-C5H5)] complex:
    a) Dicarbonyl (η4-cyclopentadienyl) (cyclopentadienyl) ferrate(II)
    b) Dicarbonyl (η5-cyclopentadiene) (cyclopentadienyl) iron(II)
    c) Dicarbonyl (η5-cyclopentadienyl) (cyclopentadienyl) iron(II)
    d) Dicarbonyl (η5-cyclopentadienyl) (η5-cyclopentadienyl) iron(II)

  • 10. Haloalkanes and Haloarenes - Quiz


    SAMPLE QUESTIONS


  • 11. Alcohols, Phenols and Ethers - Quiz


    SAMPLE QUESTIONS


    1. Which of the following is most basic in character?
    a) H2O
    b) CH3CH2OH
    c) CH3OCH3
    d) C6H5OH

    2. The presence of peroxides in old samples of ether is detected by shaking them with a freshly prepared solution of Fe2+ (FeSO4) followed by the addition of KCNS. The appearance of ……..colour indicates the presence of peroxides.
    a) Blue
    b) Green
    c) Red
    d) Brown

  • 12. Aldehydes, Ketones and Carboxylic Acids - Quiz


    SAMPLE QUESTIONS


    1. Nucleophilic addition reaction will be most favoured in
    a)
    b) $(CH_{3})_{2}CHO$
    c) $CH_{3}CH_{2}CHO$
    d) $CH_{3}CHO$

    2. Which one of the following on treatment with 50% aqueous hydroxide yields the corresponding alcohol and acid?
    a) C6H5CH2CHO
    b) C6H5CHO
    c) CH3CH2CH2CHO
    d)

  • 13. Amines - Quiz


    SAMPLE QUESTIONS


  • 14. Biomolecules - Quiz


    SAMPLE QUESTIONS


    1. Which base is present in RNA but not in DNA?
    a) Uracil
    b) Cytosine
    c) Guanine
    d) Thymine

    2. Subunits present in haemoglobin are:
    a) 2
    b) 3
    c) 4
    d) 5

  • 15. Polymers - Quiz


    SAMPLE QUESTIONS


  • 16. Chemistry in Everyday Life - Quiz


    SAMPLE QUESTIONS


  • 17. Nuclear Chemistry - Quiz


    SAMPLE QUESTIONS


    1. Artificial of radioactivity was first discovered by
    a) Sea Borg
    b) Rutherford
    c) Einstein
    d) Irene curie

    2. For the reaction given below, deduce the group of polonium in the periodic table (Pb belongs to group 14)
    84Po21082Pb206 + 2He4
    a) 2
    b) 14
    c) 6
    d) 16

  • 18. p-Block Group 16 Elements (Oxygen Family) - Quiz


    SAMPLE QUESTIONS


    1. Which one has the highest and lowest boiling point?
    a) H2O, H2S
    b) H2O, H2Se
    c) H2S, H2O
    d) H2S, H2Se

    2. The acid used in lead storage cell is
    a) Phosphoric acid
    b) Nitric acid
    c) Hydrochloric acid
    d) Sulphuric acid

  • 19. p-Block Group 17 Element (Halogen Family) - Quiz


    SAMPLE QUESTIONS


    1. A greenish yellow gas reacts with an alkali metal hydroxide to form a halate which can be used in fireworks and safety matches. The gas and the halate are
    a) Br2, KBrO3
    b) Cl2, KClO3
    c) I2, NaIO3
    d) I2, KIO3

    2. One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are
    a) SO2 and Cl2
    b) CO and Cl2
    c) NH3 and SO2
    d) H2S and Br2

  • 20. p-Block Group 18 Element (Inert Gases) - Quiz


    SAMPLE QUESTIONS


    1. Argon was discovered by
    a) Cavendish
    b) Lavoisier
    c) Rayleigh
    d) Thomson

    2. Which gas is filled in electric bulbs/tubes?
    a) O2
    b) N2
    c) Ar
    d) He

  • 21. Grignard Reagents & Organometallic Compounds - Quiz


    SAMPLE QUESTIONS


    1. Propane dithioic acid is prepared by the reaction of the following, followed by hydrolysis:
    a) C3H7MgBr+ CS2
    b) C2H5MgBr + CS2
    c) C3H7MgBr + SO2
    d) C2H5MgBr + SO2

    2. Coupling reaction between RMgX and R`X takes place to give R-R` in the presence of which of the following reagents?
    a) R--OTs
    b) CoCl2
    c) MnCl2
    d) All

  • 22. Oxydation 7 Reduction of Organic Compounds - Quiz


    SAMPLE QUESTIONS


    1. In Rosenmund reduction, which of the following does not poison the catalyst Pd?
    a) BaSO4
    b) S
    c) Quinoline
    d) Xylene

    2. Imines or enamines are selectively reduced to 10 or 20 amines with:
    a) NaBH4
    b) LAH
    c) NaCNBH3
    d) NaAlH4

  • 23. Aliphetic & Aromatic Aldehyde and Ketones - Quiz


    SAMPLE QUESTIONS


    1.
    The final product (D) is:
    a)
    b)
    c)
    d) All

    2. Gammexane is the name given to:
    a) C6H3Cl3
    b) C6H4Cl2
    c) C6H6Cl6
    d) Diphenytrichloroethane

  • 24. Carboxlic Acid & Its Derivatives - Quiz


    SAMPLE QUESTIONS


    1. The decreasing order of ester formation with acetic acid in the presence of $H^{\oplus }$ is:

    a) (I)>(III)>(II)>(IV)
    b) (I)>(II)>(III)>(IV)
    c) (IV)>(II)>(III)>(I)
    d) (IV)>(III)>(II)>(I)

    2. Identify (Z) in the series given below.
    $CH_{2}=CH_{2} \xrightarrow[]{HBr}(X) \xrightarrow[]{Hydrolysis}(Y) \xrightarrow[I_{2}excess]{Na_{2}CO_{3}}(Z)$
    a) C2H5I
    b) C2H5OH
    c) CHI3
    d) CH3CHO

  • 25. Organic Compounds with Functional Group - Quiz


    SAMPLE QUESTIONS


    1. The following reaction is:

    a) Benzidine rerrangement
    b) Pinacol-Pinacolone rearrangement
    c) Fries rearrangement
    d) Benzil-benzilic acid arrangement

    2. Which of the following represents the poisonous gas which caused the tragedy in Bhopal in 1984?
    a) CH3C=N=S
    b) CH3-N=C=O
    c) CH3-N=C=S
    d) CH3-O-N=C

  • 26. Synthetic and Natural Polymer - Quiz


    SAMPLE QUESTIONS


    1. Which is not a macromolecule?
    a) DNA
    b) Insulin
    c) Palmitate
    d) Starch

    2. Which one of the following is used to make non-stick cookware?
    a) Polystrene
    b) PVC
    c) Poly(ethylene terephthalate)
    d) Polytertrafluoroethylene

  • 27. p-Block Group 15 Elements (Nitrogen Family - Quiz


    SAMPLE QUESTIONS


    1. When phosphine is bubbled through a solution of nitrate__________is precipitated.
    a) Silver
    b) Silver phosphide
    c) Silver oxide
    d) None of these

    2. Anomalous behaviour of nitrogen is due to
    a) Small size and high EN
    b) Non-ability of d-orbitals in valence shell
    c) Ease of multiple bond formation
    d) All