LAGA DADHI SECONDARY SCHOOL CHEMISTRY WORK SHEET FOR GRADE 11 TO 2017

What is the name of a naturally occurring unrefined petroleum product composed of hydrocarbon deposits and other organic materials?

• kerosene

• Gasoline

• Crude oil

• Petroleum ether

What are the compositions of coal? It is mainly composed of

• methane,ethane,propane,butane and small quantities of higher alkanes

• alkanes,cycloalkanes,and aromatic hydrocarbons.

• element carbon,low percentage of solid,liquid and gaseous hydrocarbons.

• low percentage of carbon,compounds of nitrogen and Sulphur.

Which of the following is the functional group of alcohols?

What is the IUPAC name of the following organic molecule?

• 3-methyl1-2butanol

• 2,2-dimethyl1-2-buyanol

• 2-methyl1-3-butanol

• 3,3-dimethyl1-2butanol

Industrially ethanol can be prepared by

• Dehydrohalogenation of ethyl halide with KOH.

• Fermentation of carbohydrates such as sugar.

• The reaction between calcium carbide and water.

• The reaction between CH3COONa and soda lime.

Which liquid has the highest vapor pressure?

• Diethyl ether

• Ethanol

• Toluene

• Water

Which path represents the co-existence of liquid and gas phases?

• Path C to D

• Path D to E

• Path A to B

• Path B to C

Which of the following is true about the homologous series? The homologous series is

• The existence of chemical compounds that have the same molecular formula but different structural formulas.

• A structure in which the isomers have different positions of groups with respect to the double bond.

• The property of an element to form chains with the repetition of the same atom.

• A group of molecules each differing 'from the next member by a certain group.

What is the correct IUPAC name of the molecule?

• 2,2-dimethyl1-3-ethylhexane

• 4-ethy-5,5dimethylhexane

• 2,2-dimethyl1-3-propylpentane

• 2,2-dimethyl1-3-ethylpentane

In which solvent will both alkenes and alkynes dissolve?

• Alcohols

• Acetic acid

• Water

• Benzene