SAMPLE QUESTIONS
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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)
