What happen to bromine water when react with ethene?
Orange solution turns green
Purple solution turn colourless
Brown solution turn colourless
Pink solution turn colourless
Q.2.
What is the general formula of an alkane
2n+2
CnH2n+2
CnH2n
CnHn
Q.3.
Select the correct name of the following formula. C6H10
Hexane
Hexene
Hexanol
Hexyne
Q.4.
The major product when 2-pentanol react with concentrated sulphuric acid in 140oC is
1-pentene
methyl ethyl acetylne
dimethylethylene
pent-2-ene
methylpropylacetylene
Q.5.
Which compound produce more sooty flame?
alkene
alkane
Q.6.
CH3CH2CH2CH=CHCH2CHWhat is the IUPAC name for the compound?
2-Butene
3-Heptene
2-Methyl-2-Pentene
Q.7.
Heptane has....
5 carbons
6 carbons
7 carbon
8 carbons
Q.8.
What kind of carbide that you can used, when you want to produce propyne?
Ca3C3
Mg3C3
Ca2C3
CaC3
Mg2C3
Q.9.
What is the name of the reaction when alkenes react with HCl?
Hydrogenation
Halogenation
Hydrohalogenation
Hydration
Q.10.
Which of the following is not produced by fractional distillation of petroleum?
diesel fuel
ethanol
paraffin
petrol
Q.11.
How many bonds does carbon make?
1
2
3
4
Q.12.
Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________.
isomers
isotopes
polymers
alkanes
Q.13.
How many hydrogen atoms are in butane
4
6
8
10
Q.14.
Is salt (NaCl) an organic compound?
Yes
No
Maybe
Q.15.
What is a hydrocarbon compound?
Any compound with H
Any compound with H and C
Any compound with C
None of the above
Q.16.
Propene reacts with steam to produce alcohol. What are the condition required to produce optimum product?
the presence of concentrated phosphoric acid as catalyst at temperature 300°C and pressure 60 atm
the presence of concentrated sulphuric acid as catalyst at room temperature
the presence of nikel as catalyst at temperature 180°C
the presence of ultraviolet
Q.17.
Why do alkane not dissolve in water?
they are less dense than water
they have low melting points
they are non-polar molecule
they are chemically not reactive
Q.18.
Which of the following statements concerning the reaction of methane with bromine under the sunlight are correct?I. It is an addition reaction.II. It is a substitution reaction.III. The end product is tetrachloromethane.IV. A similar reaction will occur if propane is used instead of methane.
I and IV only
II and III only
I, III and IV only
II, III and IV only
Q.19.
What is solubility of alkane, alkene and alkyne ?
soluble in water, insoluble in organic solvent
insoluble in water , soluble in organic solvent
soluble in water and organic solvent
Q.20.
Why alkane, alkene and alkyne cannot conduct electricity?
they exist as neutral molecule
do not have free moving ion
easily evaporates
Both A & B
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