Chemistry - Hydrocarbon and Its Derivatives

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Question - 1

Azeotropic mixtures

  • A boil at different temperatures
  • B are mixtures of solids
  • C are constant boiling mixtures
  • D None of the above

Question - 2

The polymeric fibres used as a substitute for wool in making synthetic blankets, sweaters, etc is 

  • A nylon
  • B teflon
  • C orlon
  • D bakelite

Question - 3

The first organic compound synthesised in the laboratory is

  • A urea
  • B methane 
  • C ethylene
  • D acetic acid

Question - 4

Study the following statements
1. Two immiscible liquids are separated by separating funnel.
2. Latest technique for purification, isolation and separation of organic compound is chromatography.
3. Oils are purified by steam distillation.
Which of  the statements given above are correct?

  • A 1 and 2
  • B 2 and 3
  • C 1 and 3
  • D 1, 2 and 3

Question - 5

Statement I Hard water does not give lather with soap.
Statement II Calcium and magnesium salts present in hard water form precipitate with soap.

  • A Both the statements are true and Statement II is the correct explanation of Statement I
  • B Both the statements are true, but Statement II is not the correct explantion of statement I
  • C Statement I is true, but statement II is false
  • D Statement I is false, but statement II is true

Question - 6

Study the following statements
1. The common name of propanone is dimethyl ketone.
2. An isomer of ethanol is dimethyl ether.
3. When water vapours are passed over aluminium carbide, we get methane.
Which of the statements given above are correct?

  • A 1, 2 and 3
  • B 1 and 2
  • C 1 and 3
  • D 2 and 3

Question - 7

Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons?

  • A Methane, ethane, propane and butane
  • B Propane, butane, ethane and methane
  • C Butane, ethane, propane and methane
  • D Butane, propane, ethane and methane

Question - 8

The excess use of ethyl alcohol damages the human organ which is

  • A kidney
  • B liver
  • C heart
  • D intensive

Question - 9

Study the following statements
1. The antifreeze is a mixture of ethylene glycol and water.
2. The last product of the alcoholic fermentation is ethyl alcohol.
3. The terylene is obtained by the reaction of terephthalic acid and ethylene glycol.
Which of the statements given above are correct?

  • A 1, 2 and 3
  • B 1 and 2
  • C 1 and 3
  • D 2 and 3

Question - 10

Consider the following statements
1. The medicine urotropin utilized in the urinal disease is prepared from formaldehyde.
2. The medicine chlorotone utilize to keep the mental balance of the sailor or mountainers is basically extracted from acetone.
Which of the statement(s) given above is/are correct?

  • A Only 1
  • B Only 2
  • C Both 1 and 2
  • D None of the above