TMA 3 CHM305 ORGANIC CHEMISTRY QUESTION AND ANSWER

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TMA 3 CHM305 ORGANIC CHEMISTRY

  1. The properties of cellulose include the following except___?
  2. A colourless amorphous substance
  3. It hydrolizes to glucose
  4. Smooth and lactose
  5. Appear solid at room temperature

The answer is D. Appears solid at room temperature

  1. ____ restore the red colouration of Schiff reagent
  2. Ketone
  3. Aldehyde
  4. Carboxylic acid
  5. Alcohol

The answer is B. Aldehyde

  1. Aldehyde and ketones are
  2. Complex organic compound
  3. C and D
  4. Simple organic compound
  5. Simple organic compound

The answer is B. C and D

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  1. The following includes the characteristics of fat and oil except____?
  2. Colourless liquid or solid
  3. Freely soluble in organic solvent
  4. Are none volatile
  5. Decompose on cooling

The answer is D. Decompose on cooling

  1. One of this is not a physical property of pyrrole?
  2. Soluble in water
  3. It darkens when exposed to air
  4. Colourless liquid
  5. Chloroform like smell

The answer is D. Chloroform like smell

  1. The general chemical properties of oil include this except____?
  2. Rancidification
  3. Drying
  4. Hydrogenation
  5. Hydrolysis

The answer is D. Hydrolysis

  1. The family name ending –OSE indicate
  2. Hydrogen
  3. Fat and oil
  4. Carbohydrate
  5. Polysaccharides

The answer is C. Carbohydrate

  1. Saturated carboxylic acid are solid at room temperature because?
  2. Their regular nature of aliphatic chain allows the molecules to be packed in a close parallel alignment
  3. Because they have single bond in their hydrocarbon chain
  4. Because they are found natural fat and oil
  5. Because they have double bond in their hydrocarbon chain

The answer is A. Their regular nature of aliphatic chain allows the molecules to be packed in a close parallel alignment

  1. A Grignard reagent has the formula ______?
  2. e RmgX
  3. Rmg
  4. RMX
  5. RgMX

The answer is A. e RmgX

  1. Starch is a poly-glucose found in?
  2. Beans
  3. Maize
  4. Cocoa
  5. Sugar cane

The answer is B. Maize

 

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