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SAMPLE QUESTIONS

Q 1. Zinc reacts with excess of caustic soda to form:
    Zn(OH)2                (b) ZnO                (c) Na2ZnO2              (d) Zn(OH)e^.ZnCO3

Q 2. The principal products obtained on heating iodine with concentrated caustic soda solution:
    Na O + Na               (b) Na O+Na O3         (c) Na O3 + Na            (d) Na O4 + Na

Q 3. Sodium carbonate solution is alkaline due to :
    Hydrolysis of Na+       
    Hydrolysis of CO_3^(--) ions
    Hydrolysis of both Na+and CO_3^(--) ions
    None of the above

Q 4. Which salt on heating does not give brown coloured gas ?
    Li2NO3                           (b) KNO3                (c) Pb(NO3 )2            (d) AgNO3  

Q 5. In the Castner process for the extraction of sodium, the anode is made of :
    Nickel                  (b) iron                (c) copper          (d) sodium

Q 6. Which of the following statements is false for alkali metals?
    Li is strongest reducing agent
    Na is amphoteric in nature 
    Li+ is exceptionally small 
    All alkali metals give blue coloured  solutions in liquid ammonia

Q 7. Oxone is :
    CaO           (b) N2O           (c) Na2O2             (d) NaBO3

Q 8. Which one of the following electrolysis used in Down’s process of extracting sodium metal?
    NaCl + KCl + KF           (b) NaCl      (c) NaOH + KCl + KF      (d) NaCl+NaOH

Q 9. The magnetic moment of KO2 at room temperature is ………… BM.
    1.41          (b) 1. 73             (c) 2.23             (d) 2.64

Q 10. Highly pure dilute solution of sodium in liquid ammonia :
    Shows blue colour 
    Exhibits electrical conductivity 
    Produces sodium amide
    Produces hydrogen gas

Q 11 Which of the following types of hybridization is involved in the formation of cycloalkanes?
    a. sp3                        b. sp    
    c. sp2                        d. sp3d2

12.    Which orbital hybridization may be used to describe the C atom 1, 2, 3 and 4 in the following compound CH≡C-CH=CH2
    a. sp2, sp2, sp3, sp3            b. sp,sp,sp2,sp2    
    c. sp, sp, sp3, sp3               d. sp, sp2, sp2, sp2

13.    The state of hybridization of asterisked C in CH3CH=C*=CH2 is
    a. sp                        b. sp2    

    c. sp3                      d. none of these

14.    The cylindrical shape of an alkyne is due to
        a. Three sigma C-C bonds             b. three-pi C-C bond    
        c. Two sigma and one pi C-C bonds      d. One sigma and 2 pi C-C bonds

15.    Which of the following C atoms is likely to possess tetrahedral Geometry?
        4        3      2       1
        CH2=CH-CH2-COOH
    a. 1                        b. 2    
    c. 3                        d. 4

16.    The IUPAC name of the following compound is CH3CH(C2H5)CH(CH3)CH2CH2CH3
    a. 2-ethyl-3-methylhexane        b. 3,4-dimethylheptane    
    c. 1-ethyl-4-methylhexane        d. 4,5-dimethylheptane

17.    Which of the following is an unsaturated compound?
    a. C6H14                    b. C4H8     
    c. C3H7OH                    d.CH30H

18.    IUPAC name for CH3CH(OH)CH2(OH)C(CH3)CH3 is
    a. 1,1-dimethyl-1,3-butanediol    b. 4-methyl-2,4-pentanediol 
    c. 2-methyl-2,4-pentanediol        
    d. 1,3,3-trimethyl-1,3-propanediol

19.    The structure of 4-methylpent-2-ene-1-one is 
    a. CH3CH2CH=CHCH2OH        b. (CH3)2C=CHCH2CH2OH
    c. (CH3)2CHCH=CHCH2OH         d. CH3CHOHCH=C(CH3)2

20.    Indicate the wrongly named compound
         a. (CH3)2CHCH2CH2CHO (4-methylpentanal) 
        b. (CH3)2CHC≡CCOOH (4-methyl pent-2-yn-1-oic acid) 
        c. CH3CH2CH2CH(CH3)COOH (2-methyl pentanoic acid) 
        d. CH3CH2CH=CHCOCH3 (Hex- 3-en-5-one)

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