10 Fast Multiple Choice Questions on Synthetics

“Parkesin” was the first semi-synthetic material developed in 1862 by  Alexander Parkes .Then the Belgian-born chemist, Leo Hendrik Baekeland, developed the first fully synthetic material in 1906 called “Bakelite”. The remarkable thing about this material was that, when heated, it hardened rather than melted.Thus the development of synthetics materials continued. By  1920s and ‘30s, processes for manufacturing synthetic materials from petroleum were developed. Soon, materials with a great variety of characteristics such as heat resistance, formability or electrical conductivity existed.

10 Fast Multiple Choice Questions on Synthetics

 

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Optic fibres are mainly used for which of the following ? 

Communication
Weaving
Musical instruments
Food industry

Gypsum is added to cement clinker to 

increase the tensile strength of cement
bind the particles of calcium silicate
decrease the rate of setting of cement
facilitate the formation of colloidal gel

Detergents used for cleaning clothes and utensils contain 

nitrates
bicarbonates
sulphonates
bismuthates

What are soaps ? 

Salts of silicates
Esters of heavy fatty acids
Sodium or potassium salts of havier fatty acids
Mixture of glycerol and alcohols

Rayon is chemically 

glucose
amylose
cellulose
pectin

Which type of fire extinguisher is used  for petroleum fire ? 

Foam type
Soda acid type
Power type
None of these

Which one of the following is the petroleum wax? 

Bees wax
Carnauba wax
Paraffin wax
Jojoba wax

Which of the following are nirtrogeneous fertilisers ?  1. Calcium ammonium nitate               2. Urea                               3. Calcium Cyanamide       4. Superphosphate

1 and 2
1 and 3
1, 2 and 3
1 ,2 , 3 ,and 4

Rubber is coagulated from latex by adding 

hydrochloric acid
acetic acid
Sulphuric acid
carbonic acid

Paper is manufactured by 

Wood and resin
Wood ,sodium and bleaching power
Wood and bleaching power
wood calcium hydrogen sulphite and resin

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