Home
Class 12
CHEMISTRY
Classify the following as amorphous or c...

Classify the following as amorphous or crystalline solids: polyurethane, naphtalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.

Text Solution

AI Generated Solution

To classify the given substances as amorphous or crystalline solids, we will analyze each substance based on their structural characteristics. ### Step-by-Step Solution: 1. **Polyurethane**: - Polyurethane is a type of polymer that does not have a regular arrangement of particles. - **Classification**: Amorphous solid. ...
Promotional Banner

Similar Questions

Explore conceptually related problems

Classify the following solids into amorphous or crystalline solids. Bakelite, Platinum , Camphor , Oxalic acid , Melamine formaldehyde, Alum , Neoprene, Sugar , Solid CO_2 , Polythene.

Which of the following is an amorphous solid? (1) Teflon (2) Cellophane (3) Poly vinyl chloride (4) Fibre glass (5) All of these

How do you count for the following observations ? (a) Though alkaline potassium permanganate and acidic potassium permanganate both are used as oxidants, yet in the manufacture of benzoic acid from toluene we use alcoholic potassium permanganate as an oxidant. Why ? Write a balanced redox equation for the reaction. (b) When concentrated sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas HCl, but if the mixture contains bromide then we get red vapour of bromine. Why ?

Write the chemical formula of the following compounds in a step by step manner a. Potassium choride b. sodium bromide c. Potassium nitrate d. Calcium hydroxide e. Calcium bicarbonate f. Sodium bisulphate g. Potassium sulphate h. Zinc hydroxide i. Potassium permanganate j. Potassium dichromate k. Aluminium hydroxide l. Magnesium nitride m. sodium zincate n. copper II oxide o. Copper (I) sulphide p. Iron [III] chloride q. Iron [II] hyrdoxide r] Iron [III] sulphide s. Iron [III] oxide.

The following materials are provided - solutions of cobalt chloride, ammonia, potassium permanganate, lime water, starch-iodide, sodium hydroxide, lead acetate, potassium iodide. Also provided are litmus and filter papers, glowing splinters and glass rods. Using the above how would you distinguish between: a] a neutral, acidic and a basic gas b] oxygen and hydrogen gas. c] carbon dioxide and sulphur dioxide gas d] chlorine and hydrogen chloride gas e) hydrogen sulphide and nitrogen dioxide gas f] ammonia and carbon dioxide gas g] zinc carbonate and potassium nitrate h] hydrated copper sulphate and anhydrous copper sulphate i] ammonium sulphate and sodium sulphate.

Write the balanced chemical equations for the following reaction. (a) Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogen carbonate. (b) Sodium hydrogen carbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide. (c) Copper sulphate on treatment with potassium iodide precipitates cuprous iodide iodide (Cu_(2)I_(2)) , liberates iodine gas and also forms potassium sulphate.

The question refer to the following salt solutions listed A to F (A] Copper nitrate [B] Iron sulphate [C] Iron (III) chloride [D] Lead nitrate [E] Magnesium sulphate [F] Zinc chloride Which solutions will give a white precipitate when dilute sulphuric acid is added it ?

Write the balanced chemical equations for the following reactions: (a) Calcium hydroxide + Carbon dioxide to Calcium carbonate + Water (b) Zinc + Silver nitrate to Zinc nitrate + Silver (c) Aluminium + Copper chloride to Aluminium chloride + Copper (d) Barium chloride + Potasium sulphate to Barium sulphate + Potassium chloride

The question refer to the following salt solutions listed A to F (A] Copper nitrate [B] Iron sulphate [C] Iron (III) chloride [D] Lead nitrate [E] Magnesium sulphate [F] Zinc chloride Which two solutions will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution ?

The question refer to the following salt solutions listed A to F (A] Copper nitrate [B] Iron sulphate [C] Iron (III) chloride [D] Lead nitrate [E] Magnesium sulphate [F] Zinc chloride Which two solutions will give a white precipitate when acidified dilute hydrochloric acid followed by barium chloride solution ?