Total Number of Question/s - 4730

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  • 1. The Solid State - Quiz


    SAMPLE QUESTIONS


    1. The number of octahedral sites per sphere in fcc structure is
    a) 8
    b) 4
    c) 2
    d) 1

    2. In a tetragonal crystal
    a) a = b = c, α = β = 900 ≠ γ
    b) α = β = γ = 900 , a = b ≠ c
    c) α = β = γ , a ≠ b ≠ c
    d) α = β = 900, γ = 1200, a = b ≠ c

  • 2. Solutions - Quiz


    SAMPLE QUESTIONS


    1. When a solution is separated from a solvent by a semipermeable membrane, then the phenomenon taking place is called as
    a) Osmosis
    b) Diffusion
    c) Solubility
    d) None

    2. The value of Kf for water is 1.860, calculated from glucose solution. The value of Kf for water calculated for NaCl solution will be
    a) =1.86
    b) <1.86
    c) >1.86
    d) Zero

  • 3. Electrochemistry - Quiz


    SAMPLE QUESTIONS


    1. $\kappa$ = 4.95 x 10-5 for a 0.001 M solution. The reciprocal of the degree of dissociation of acetic acid, if $\Lambda_{m}^{0}$ for acetic acid is 400 S cm-2 mol-1 is
    a) 7
    b) 8
    c) 9
    d) 10

    2. p(H2)(p1)|H(1M) | (H2)(p2), Pt cell reaction will be exergonic if
    a) p1 = p2
    b) p1 > p2
    c) p2 > p1
    d) p1 = 1 atm

  • 4. Chemical Kinetics - Quiz


    SAMPLE QUESTIONS


    1. Rate constant k = 1.2 x 103 mol-1 L s-1 and Ea = 2.0 x 102 kJ mol-1. When T → ∞:
    a) A = 2.0 x 102 kJ mol-1
    b) A = 1.2 x 103 mol-1 L s-1
    c) A = 1.2 x 103 mol L-1 s-1
    d) A = 2.4 x 103 kJ mol-1 s-1

    2. The rate of reaction increases by the increase of temperature because
    a) Collision frequency is increased
    b) Energy products decreases
    c) Fraction of molecules possessing energy ≥ E1 (threshold energy) increases.
    d) Mechanism of a reaction is changed

  • 5. Surface Chemistry - Quiz


    SAMPLE QUESTIONS


    1. Brownian motion is an
    a) Electrical property
    b) Mechanical property
    c) Optical property
    d) Colligative property

    2. Which one of the following statements is correct?
    a) Brownian movement is more pronounced for smaller particles than for bigger ones
    b) Sols of metal sulphides are lyophilic
    c) Hardy schulze law states, the bigger the size of the ion, the greater is its coagulating power
    d) One would expect charcoal to adsorb chlorine more strongly than hydrogen sulphide.

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


    SAMPLE QUESTIONS


    1. By which process Pb and Sn are extracted, respectively?
    a) Carbon reduction, self-reduction
    b) Self-reduction, carbon reduction
    c) Electrolytic reduction, cyanide process
    d) Cyanide process, electrolytic reduction

    2. In the froth flotation process for beneficiation of ores, the ore particles float because
    a) They are light
    b) Their surface is not easily wetted by water
    c) They bear electrostatic charge
    d) They are insoluble

  • 7. The p-Block Elements - Quiz


    SAMPLE QUESTIONS


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


    SAMPLE QUESTIONS


    1. Which of the following is false?
    a) Molten lead and zinc are miscible
    b) Silver is more soluble in molten zinc than lead
    c) Zinc-silver alloy is volatile
    d) Zinc-silver alloy is heavie and gets solidified later than lead

    2. Among 3d transition series the IE
    a) Increases regularly in moving from left to right
    b) Decreases regularly in moving from left to right
    c) Remains constant within the period
    d) Increases gradually within the period but the relative increase is not sharp

  • 9. Coordination Compounds - Quiz


    SAMPLE QUESTIONS


    1. The magnetic moment of a certain complex (A) of Co was found to be 4.89 BM and the EAN as 36. Co also forms complex (B) with magnetic moment 3.87 BM and EAN as 37, and complex (C) with EAN as 36 but diamagnetic. Which of the following statements is true regarding the above observation?
    a) The oxidation states of Co in (A) , (B) and (C) are +3, +2 and +3, respectively
    b) Complexes (A) and (B) have sp3d2 hybridisation state while (C) has dsp3 hybridisation state.
    c) The spin multiplicities of Co in (A), (B) and ( C ) are 3,2, and 1, respectively.
    d) The oxidation states of Co in (A), (B)and (C) are +6, +8 and +1, respectively

    2. The possible number of optical isomers in Cr(en)2Cl2] is
    a) 6
    b) 3
    c) 4
    d) 2

  • 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 product (B) is:
    a)
    b)
    c)
    d) All

  • 12. Aldehydes, Ketones and Carboxylic Acids - Quiz


    SAMPLE QUESTIONS


    1. The product formed in aldol condensation is
    a) a beta-hydroxy acid
    b) a beta-hydroxy aldehyde or a beta-hydroxy ketone
    c) an alpha-hydroxy aldehyde or ketone
    d) an alpha, beta unsaturated ester

    2. Among the following the strongest acid is
    a) CH3COOH
    b) CH2ClCH2COOH
    c) CH2ClCOOH
    d) CH3CH2COOH

  • 13. Amines - Quiz


    SAMPLE QUESTIONS


  • 14. Biomolecules - Quiz


    SAMPLE QUESTIONS


    1. The pair in which both the species have iron is:
    a) Nitrogenase, cytochromes
    b) Carboxypeptidase, haemoglobin
    c) Haemocyanin, nitrogenase
    d) Haemoglobin, cytochromes

    2. At pH = 4, glycine exists as:
    a)
    b)
    c) H2NCH2COOH
    d)

  • 15. Polymers - Quiz


    SAMPLE QUESTIONS


  • 16. Chemistry in Everyday Life - Quiz


    SAMPLE QUESTIONS


  • 17. Nuclear Chemistry - Quiz


    SAMPLE QUESTIONS


    1. The distance between nucleons in atomic nucleus is of the order of (1 Fermi = 10-13 cm)
    a) 2 Fermi
    b) 25 Fermi
    c) 100Fermi
    d) 40 Fermi

    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. High density arid low volatility of H2SO4 is due to
    a) Strong bonds
    b) van der Waals force
    c) Hydrogen bonding
    d) None

    2. Which shows maximum catenation property?
    a) Se
    b) Te
    c) Po
    d) S

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


    SAMPLE QUESTIONS


    1. Mark the strongest reducing agent.
    a) H2F2
    b) HCl
    c) HBr
    d) HI

    2. In the reaction :
    3Br2 + 6OH → 5Br + BrO3 + 3H2O, Br2 is
    a) Oxiised
    b) Reduced
    c) Disintegrated
    d) Disproportionated

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


    SAMPLE QUESTIONS


    1. The fluoride which does not exist is
    a) CF4
    b) SF6
    c) HeF4
    d) XeF4

    2. The gas used for inflating the tyres of aroplanes is
    a) H2
    b) He
    c) N2
    d) Ar

  • 21. Grignard Reagents & Organometallic Compounds - Quiz


    SAMPLE QUESTIONS


    1. Reactivity of PrMgBr with the following in the decreasing order is:
    (i) Alcohol (ii) Aldehyde
    (iii) Ketone (iv) Ester
    a) (iv) > (iii) > (ii) > (i)
    b) (i) > (ii) > (iii) > (iv)
    c) (ii) > (iii) > (i) > (iv)
    d) (iv) > (i) > (iii) > (ii)

    2. $\xrightarrow[]{|\; \; HgSO_{4}/H_{2}SO_{4}}(A)\xrightarrow[]{2\, mol\, of\, MeMgBr/H_{3}O^{\oplus }}(B)$. (B) is :
    a)
    b)
    c)
    d)

  • 22. Oxydation 7 Reduction of Organic Compounds - Quiz


    SAMPLE QUESTIONS


    1. Oxidation of aldehyde and ketone by peroxybenzoic and to ester is called:
    a) Elbs oxidation
    b) Hell-Volhard-Zelinsky oxidation
    c) Oppenauer oxidation
    d) Baeyer-Villiger oxidation

    2.
    The products (A), (B) and (C) are:
    a) A ⇒ Azobenzene, (B) ⇒ Hydrazobenzene, (C) ⇒ Azoxybenzene
    b) A ⇒ Azobenzene, (B) ⇒ Azoxybenzene, (C) ⇒ Hydrazobenzene
    c) (A) → Azoxybenzene, (B) ⇒ Azobenzene, (C) ⇒ Hydrazobenzene
    d) (A) ⇒ Azoxybenzene, (B) ⇒ Hydrazobenzene, (C) ⇒ Azobenzene

  • 23. Aliphetic & Aromatic Aldehyde and Ketones - Quiz


    SAMPLE QUESTIONS


    1. Which of the following deactivates the aromatic nucleus?
    a) -CH3
    b) -Br
    c) -NH2
    d) -NR2

    2. The decreasing order of dipole moment of the following is:
    I. CH3Cl II. CH3Br III. CH3F
    a) (I) > (II) > (III)
    b) (I) > (III) > (II)
    c) (II) > (I) > (III)
    d) (II) > (III) > (I)

  • 24. Carboxlic Acid & Its Derivatives - Quiz


    SAMPLE QUESTIONS


    1. Benzamide on treatment withy POCl3 gives:
    a) Aniline
    b) Benzonitrile
    c) Chlorobenzene
    d) Benzyl amine

    2. An organic liquid of the composition C4H8O2 yields a sodium of an acid C3H6O2 and methanol on boiling with NaOH solution. The given liquid is:
    a) CH3CH2COOCH3
    b) CH3COOC2H5
    c) HCOOC3H7
    d) CH3CH2CH2COOH

  • 25. Organic Compounds with Functional Group - Quiz


    SAMPLE QUESTIONS


    1. When PhNO2 is reduced in alkaline medium, the product is:
    a)
    b) Ph-N=N-Ph (Azobenzene)
    c) Ph-NH-NH-Ph (Hydrazobenzene)
    d) All

    2. The compound which on reaction with aqueous nitrous acid at low temperature produces an oily nitrosoamine is:
    a) Methylamine
    b) Ethylamine
    c) Diethylamine
    d) Triethylamine

  • 26. Synthetic and Natural Polymer - Quiz


    SAMPLE QUESTIONS


    1. Which of the following is a polyamide?
    a) Teflon
    b) Nylon-6,6
    c) Bakelite
    d) Terylene

    2. Ziegler-Natta catalysts
    a) Are triethyl aluminium titanium tetrachloride complex (C2H5)3Al + TiCl4 .
    b) Are used to prepare stereospecific addition polymers.
    c) Are employed to have sterochemical control of the polymerisation process.
    d) All the above.

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


    SAMPLE QUESTIONS


    1. It is recommended that ammonia bottles be opened after cooling in ice for sometime. This is because
    a) It brings tears to eyes
    b) It has high vapour pressure
    c) It is corrosive liquid
    d) It is mild explosive

    2. Copper reacts with dil. HNO3 to from a nitrate and
    a) NO2
    b) NO
    c) N2O3
    d) N2O5