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Chemistry MCQ Question - Aliphatic Hydrocarbons
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1. Bleaching powder is not used for bleaching
Cotton
Costly fabrics
Linen
Paper pulb
2. Which of the following is the weakest reducing agent?
HF
HBr
HC?
HI
3. Which of the following is not use of compounds of Fluorine
SbF3 is used for manufacture of pottery
Sodium fluoroacetate is a rat poison
Cu F2 is used in ceramic industry
None of the above
4. In which compound of Xenon the oxidation state of Xenon is + 6.
XeF4
XeOF4
XeOF2
Na4XeO6
5. Photographic plates are coated with a thin film of :
AgNO3
AgI
AgCl
AgBr
6. The anhydride of HCIO4 is:
Cl2O
Cl2O6
ClO2
Cl2O7
7. Indicate the correct statement:
Cl2 is the strongest oxidizing agent
I2 is a volatile solid
Br2 is more reactive than Cl2
Cl2 is insoluble in water
8. Which one of the following halogens is present in Teflon:
I2
Br2
Cl2
F2
9. Which is the paramagnetic oxide of chlorine:
Cl2O7
Cl2O6
ClO2
ClO2
10. Alkanes containing a methyl group on main chain at 2nd carbon are called
iso-alkane
normal-alkane
neo-alkane
branched-alkane
11. When one hydrogen atom of alkane is removed then it is called
alkene
alkyl
aldehyde
saturated hydrocarbon
12. Alkanes are also known as
saturated hydrocarbon
unsaturated hydrocarbon
paraffins
both a & c
13. Sabatier Senderns reaction involve _________ in presence of Ni
Aalkene & H2
alkene & O2
alkene & N2
alkyne & Cl2
14. Hydrogenolysis results in the formation of
alkane
alkene
alkyne
aldehydes
15. Clemmensens reduction infolves the reduction of
ketone
aldehyde
alkane
all of the above
16. Removal of CO2 is called
carboxylation
decarboxylation
esterification
hydroxylation
17. Soda lime is a mixture of
CaO and KOH
CaO and NaOH
NaOH and Na2O
Na2O and KOH
18. Molozonide is unstable and changes into ozonide on
reduction
oxidation
hydrolysis
rearrangement
19. Dehalogenation of ethyl tetrahalide will give
ethene
ethyne
ethyl halide
all of the above are possible
20. R-Mg-Br is called
Grignard reagent
Metallic alkyl halide
Both a & b
Alkyl
21. Upto ______ C atoms alkanes are gases
2
3
4
6
22. Which of the following is the most reactive
ethane
ethyne
ethene
benzene
23. Which of the following is the most reactiIncomplete oxidation of methane in the limited supply of air forms. ve
CO2 and H2O
CH3OH
CO + H2 + C
CO + H2O + C
24. Introduction of nitro group in a molecule is called
nitration
halogenation
sulphonation
amination
25. Order of ease of halogenation in alkane is
I2>Cl2>Br2>F2
F2>Cl2>I2>Br2
F2>Cl2>Br2>I2
Cl2>F2>Br2>I2
26. The gas used in manufacturing of urea fertilizer
C2H6
C2H4
C2H2
CH4
27. General formula of alkyne is
CnH2n + 2
CnH2n - 2
CnH2n
CnH2n + 2
28. Which of the following will be acidic
propyne
1-butyne
ethyne
all of the above
29. Removal of halogen and hydrogen atom is
halogenation
dehalogenation
dehydrohalogenation
hydrohalogenation
30. Alkenes are produced from dehalogenation of
dihalo alkane
trihalo alkane
vicinal dihalo alkane
vicinal trihalo alkane
31. Reactivity due to pi-electrons is present in
alkane
alkene
alkyne
both b & c
32. In unsaturated hydro carbons ?-electrons favour
less reactivity
addition reactions
substitution reactions
none
33. Raney nickel is prepared from __________ by treating with caustic soda
Ni-Cu alloy
Ni-Fe alloy
Ni-Al alloy
Ni-Mg alloy
34. Which one is Chloroform
CH2Cl2
CH3Cl
CHCl3
CCl4
35. Vinylacetylene combines with HCI to form
polyacetylene
benzene
chloroprene
divinyl acetylene
36. ? ? -dichloroethyl sulphide is commonly known as
laughing gas
bio-gas
mustard gas
phosgene gas
37. Which is used for artificial ripening of fruit?
ethane
ethene
ethyne
methane
38. Preparation of vegetable ghee involves
halogenation
hydroxylation
hydrogenation
hydration
39. Which is methyl cyanide
CH3NH2
CH3NO2
CH3CN
CH2 = CH - CN
40. Which one of the following is termed as benzul alcohol?
C6H5OH
C6H5CH(OH)2
C6H5CH2OH
C6H5COOH
41. Which one of the following is also known as lactic acid?
3-Hydroxy propanoic acid
2-Hydroxy propanoic acid
2-hydroxy butanoic acid
3-hydroxy butanoic acid
42. Which one of the following is also known as tartaric acid?
2 3-dihydroxy butance 1 4 -dioic acid
2 3 -dihydroxy butanedioic acid
2 3 -dihydroxy butanioc acid
2 2 -dihydroxy butanoic acid
43. Water gas heated at 450?C and 200 atm pressure in the presence of ZnO+Cr2O3 will produce
methanal
methanol
carbonic acid
methane
44. The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called
Mother liquor
Filterate
Extract
Molasses
45. The formula of starch is
C12H22O11
C6H10O5
(C6H10O5)n
C6H12O6
46. The process of fermentation of starch involve many enzymes the sequence of enzymes used are
Diastase-maltase-zymase
Zymase-maltase-diastase
Maltase-diastase-zymase
Diastase-zymase-maltase
47. The rectified spirit contains
12% alcohol
90% alcohol
95% alcohol
100% alcohol
48. K2Cr2O7/H2SO4 generate
Oxygen
Hydrogen
Nascent oxygen[O]
Nascent hydrogen[H]
49. The oxidation of isopropyl alcohol will yield
propane
Propanol
Propanone
Propanoic acid
50. Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate?
Primary alcohol
Secondary alcohol
Tertiary alcohol
All of above
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