Chemistry I X Organic Chemistry

Chemistry I X Organic Chemistry

1. Which one of the following properties is not associated with homologous series:

a) Same chemical properties
b) Same method of preparation
c) None of these
d) Same physical properties
2. Total number of isomers of butane is:

a) 1
b) 3
c) 2
d) 4
3. The general formula of alkenes is :

a) CnH2n
b) CnH2n+1
c) CnHn-2
d) CnH2n+2
4. Functional group of alcohol family is :

a) -OH
b) -CI
c) -COOH
d) -CO
5. An atom or group of atom which determines the characteristic properties of an organic compound is called:

a) Alkyl group
b) Functional group
c) None of these
d) Carbonated group
6. The compounds of carbon (except oxides, carbonates, metallic carbides etc) are called:

a) Organic compounds
b) Inorganic compounds
c) Metallic compounds
d) None of these
7. The first organic compound prepared in the laboratory was:

a) Methane
b) Urea
c) Ethanol
d) Ammonium
8. Olefins means:

a) Petroleum forming
b) None of these
c) Uncreative
d) Oil forming
9. Organic compound must contain:

a) Halogen
b) Nitrogen
c) Oxygen
d) Carbon
10. The names of Alkenes ends with:

a) -ene
b) -yl
c) -ane
d) -yne
11. Which one of the following is not the general property of an organic compound:

a) Soluble in organic solvents
b) Non-voltile in nature
c) Having low melting and boiling points
d) Carbon is an essential constituent of all organic compounds
12. The branch of chemistry which deals with the study of hydrocarbons & their derivatives is called:

a) Physical chemistry
b) Organic chemistry
c) Industrial chemistry
d) Inorganic chemistry
13. Each H__C__H bond angle in methane is :

a) 109.5 deg
b) 120 deg
c) 180 deg
d) 90 deg
14. The un-saturated hydrocarbons which contains a carbon - carbon double bonds are called:

a) Alkyl
b) Alkanes
c) Alkynes
d) Alkenes
15. The Urea was prepared in the laboratory from inorganic substances first time by:

a) Wholer
b) Dalton
c) Bohr
d) Berzellius
16. Which one of the following is the general formula of saturated hydrocarbons or alkanes:

a) CnH2n+1
b) CnH2n+2
c) CnH2n-2
d) CnH2n
17. The major component of the natural gas is :

a) Ethyne
b) Ethene
c) Ethane
d) Methane
18. Geometry of methane molecule is:

a) Tetrahedral structure
b) Cubic structure
c) Hexagonal structure
d) None of these
19. The hydrocarbons having a multiple bonds are called:

a) Unsaturated hydrocarbons
b) Saturated hydrocarbons
c) Oxygenated hydrocarbons
d) Carbonated hyrocarbons
20. The compounds having same molecular formula but different structural formula are called:

a) Isomers
b) Isotopes
c) Allotropes
d) None of these
21. Different fraction of crude oil are separated by:

a) Melting
b) Fractional distillation
c) Sublimation
d) Filtration
22. The functional group of carboxylic acids is :

a) -Br
b) -COOH
c) -OH
d) -C-O
23. Vital force theory was proposed by:

a) Bohr
b) Wholer
c) Berzellius
d) Dalton
24. A molecule of butane contains four carbon atom and:

a) Ten hydrogen atoms
b) Eight hydrogen atoms
c) Sixteen hydrogen atoms
d) Six hydrogen atoms
25. Halo group (C-X) is present in :

a) Ketones
b) Alkyl halides
c) None of these
d) Alcohols
26. Hydrocarbons are the compounds of :

a) Carbon and oxygen only
b) Nitrogen and hydrogen only
c) Carbon and hydrogen only
d) Hydrogen and sulphur only
27. Hydroxyl group (-OH) is present in:

a) Aldehydes
b) Alcohols
c) Alkyl halides
d) Carboxylic acids
28. The hydrocarbons in which all carbon__carbon bonds are single are called:

a) Unsaturated hydrocarbons
b) Carbides
c) Hydrides
d) Saturated hydrocarbons
29. What is the general formula of alkynes:

a) CnH2n+1
b) CnH2n-2
c) CnH2n+2
d) CnH2n
30. When methane is heated at high temperature in the absence of air , Carbon black and hydrogen gas is produced, the reaction is known as :

a) Polymerization
b) Cracking
c) Neutralization
d) None of these
31. Olefins is the name of :

a) Alkyl
b) Alkynes
c) Alkenes
d) Alkanes
32. The two consecutive members in a homologous series differ in their molecular mass by:

a) 20 Units
b) 13 Units
c) 14 Units
d) 16 Units
33. Carbon atoms join with each other which a bond called:

a) Ionic bond
b) Co-ordinate bond
c) Metallic bond
d) Covalent bond
34. Vital force theory was rejected by:

a) Berzellius
b) Lewis
c) Bohr
d) Wohler
35. Vital force theory was put forward:

a) 1715
b) 1615
c) 1815
d) 1915
36. Which of the following does not give addition reaction:

a) Ethene
b) Propene
c) Ethane
d) Ethyne
37. A process by which vegetable oil is converted into Banaspati ghee is called:

a) Prolysis
b) Polymerization
c) Hydrogenation
d) Hydrolysis
38. The organic compounds which contains "_COOH" as functional group are called:

a) Alcohols
b) Carboxylic acids
c) Alkyl halides
d) None of these
39. Wholer prepared first organic compound "UREA" from which compound:

a) Ammonium sulphate
b) Ammonium cynate
c) Ammonium chloride
d) Ammonium carbonate
40. Which of the following compounds has triple bond in it:

a) C2H6
b) C2H2
c) C3H8
d) C2H4
41. The two consecutive members in a homologous series differ in their molecular formula by:

a) -CH2 group
b) CH3 group
c) COH group
d) -C2H5 group
42. Petroleum is a complex mixture of :

a) Hydrocarbons
b) None of these
c) Carbohydrates
d) Oxides
43. When oil is converted into banaspati ghee, the catalyst used is :

a) Ca
b) Na
c) Ni
d) Au
44. Organic compounds have:

a) None of them
b) High melting and low boiling points
c) Low melting and boiling points
d) Low melting and high boiling points
45. Saturated hydrocarbons are stable and not very reactive, because of this they are called:

a) Carbines
b) Olefins
c) Paraffin's
d) None of these
 
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