Acetylene is also called
1.Ethyne
2.ethene
3.ethane
4.methane
All are wrong about alkenes, but that they are
1.saturated hydrocarbons
2.soluble in water
3. unsaturated hydrocarbons
4. insoluble in organic solvents
Chloroform is also called
1.chloromethane
2.dichloromethane
3.Trichloromethane
4. tetra chloromethane
How does chlorine react?
1.explosively
2.slowly in dark but rapidly in strong sunlight
3.requires high temperature or strong sun light
4.essentially unreactive
How does iodine react?
1.explosively
2.slowly in dark but rapidly in strong sunlight
3.equires high temperature or strong sun light
4.essentially unreactive
In alkanes (saturated hydrocarbons) each carbon atom forms
1.2 bonds
2.4 bonds
3.6 bonds
4. 8 bonds
Loss of hydrogen halide is called
1. halogenation
2.dehydration
3.Dehydrohalogenation
4.hydrogenation
Oxy-acetylene torches can produce temperature as high as
1.30 degrees
2.300 degrees
3.3000 degrees
4. 30000 degrees
Oxy-acetylene torches can produce temperature as high as
1.30 degrees
2.300 degrees
3.3000 degrees
4. 30000 degrees
Oxy-acetylene torches can produce temperature as high as
1.30 degrees
2.300 degrees
3.3000 degrees
4. 30000 degrees
The molecular formula of ethane is
1.CH4
2.C2H6
3.C3H8
4.C4H10
The reaction in which one chlorine atom becomes attached with one carbon and the other one with other carbon atom is called
1.elimination reaction
2.substitution reaction
3.halogenation
4.addition reaction
The simplest alkane is
1. butane
2.propane
3.methane
4.ethane
What is given by the incomplete combustion of methane?
1.carbon dioxide and water
2.carbon dioxide, water and heat
3.carbon monoxide, carbon and water
4.hydrogen and carbon dioxide
What is produced by the complete combustion of an alkane?
1.carbon dioxide and water
2.carbon dioxide, water and heat
3.carbon monoxide, carbon and water
4.hydrogen and carbon dioxide
What is the color of the flame with which most alkanes burn?
1.orange
2.yellow
3.red
4.blue
What is the physical state of higher alkanes?
1.solid
2.liquid
3.gas
4.plasma
What is the term used for the process in which there is an addition of nascent hydrogen?
1.hydrogenation
2.dehydration
3.reduction
4.oxidation
What is the term used for the reaction of a substance with oxygen or air that causes the rapid release of heat and the appearance of a flame?
1.oxidation
2.combustion
3.burning
4.reduction
What type of reaction do alkynes undergo across the triple bond?
1.elimination reaction
2.substitution reaction
3.addition reaction
4.halogenation
When two carbon atoms share two electron pairs then they form
1.single bond
2.double bond
3.triple bond
4.coordinate covalent bond
Which of the following are saturated hydrocarbons?
1.alkanes
2.alkenes
3.alkynes
4.alkyl radicals
Which of the following is given off during ripening fruits and vegetables?
1.ethane
2.ethene
3.Ethyne
4.methane
Which of the following is not true about lighter alkanes?
1.their combustion can be controlled
2.they produce large amount of heat per gram
3.they are expensive and rare
4.they are widely used as fuel
Which of the following is used as an anesthetic?
1.dichloromethane
2.tetra chloromethane
3.methyl chloride
4. chloroform
Which of the following is used as antifreeze in automobile radiators?
1.ethane
2.methane
3.lycopene
4. ethylene glycol