Sail E0 Webinar

General Knowledge


Total Questions : 22 | Page 1 of 3 pages
Question 1.

Which one of the following is the petroleum wax?

  1.    Paraffin wax
  2.    Jonoba wax
  3.    Carnauba wax
  4.    Bees wax
 Discuss Question
Answer: Option A. -> Paraffin wax

Paraffin wax is obtained from petroleum by dewaxing light lubricating
oil stocks. It is used in candles, wax paper, polishes, cosmetics, and
electrical insulators. It assists in extracting perfumes from flowers,
forms a base for medical ointments, and supplies a waterproof coating
for wood. In wood and paper matches, it helps to ignite the matchstick
by supplying an easily vaporized hydrocarbon fuel.

Question 2.

The type of glass used in making lenses and prisms is

  1.    jena glass
  2.    soft glass
  3.    pyrex glass
  4.    flint glass
 Discuss Question
Answer: Option D. -> flint glass

Question 3.

Soap is a mixture of sodium or potassium salts of

  1.    dicarboxylic acids
  2.    monocarboxylic acids
  3.    glycerol
  4.    tricarboxylic acids
 Discuss Question
Answer: Option B. -> monocarboxylic acids

Question 4.

Gypsum is added to cement clinker to

  1.    increase the tensile strength of cement
  2.    decrease the rate of setting of cement
  3.    facilitate the formation of colloidal gel
  4.    bind the particles of calcium silicate
 Discuss Question
Answer: Option B. -> decrease the rate of setting of cement

Question 5.

Paper is manufactured by

  1.    Wood and resin
  2.    Wood, sodium and bleaching powder
  3.    Wood, calcium, hydrogen sulphite and resin
  4.    Wood and bleaching powder
 Discuss Question
Answer: Option C. -> Wood, calcium, hydrogen sulphite and resin

Question 6.

The vast resources of unutilised natural gas can be used in the production of

  1.    graphite
  2.    Synthetic petroleum
  3.    fertilisers
  4.    carbide
 Discuss Question
Answer: Option C. -> fertilisers

Question 7.

Glass is made of the mixture of

  1.    quartz and mica
  2.    sand and silicates
  3.    salt and quartz
  4.    sand and salt
 Discuss Question
Answer: Option B. -> sand and silicates

Question 8.

Deep blue colour is imparted to glass by the presence of

  1.    cupric oxide
  2.    nickel oxide
  3.    cobalt oxide
  4.    iron oxide
 Discuss Question
Answer: Option C. -> cobalt oxide

Question 9.

In vulcanisation, natural rubber is heated with

  1.    Carbon
  2.    Silicon
  3.    Sulphur
  4.    Phosphorous
 Discuss Question
Answer: Option C. -> Sulphur

Question 10.

How does common salt help in separating soap from the solution after saponification?

  1.    By decreasing density of Soap
  2.    By decreasing solubility of Soap
  3.    By increasing density of Soap
  4.    By increasing solubility of Soap
 Discuss Question
Answer: Option B. -> By decreasing solubility of Soap

Latest Videos

Latest Test Papers