Engineering Chemistry S Datta

EXPLOSIVES AND PROPELLANTS 349
3. Name two for each class:
(a) Primary explosive
(b) Two low explosive
(c) High explosive
(d) Monopropellants and bipropellants
4. What are the requirements of a good explosive?
5. Why are detonators required for high explosive? What are the uses of explosives?
6. What are propellants? How are propellants classified? State the requirements of a good propellant?
7. What is gun-cotton? What is RDX? What are fuses?
8. Explain the term “oxygen-balance of an explosive”.
9. What are dynamites? State the procedure of its manufacture.
10. Write notes on the following:
(a) Modern explosives
(b) Nitroglycerine
(c) Rocket propellant
(d) Cordite
(e) TNT
11. (i) RDX is
(a) Trinitrotoluene
(b) Cyclotrimethylene trinitroamine
(c) Lead azide
(d) Nitrocellulose
(ii) TNT is a compound of
(a) Cellulose
(c) Toluene
(iii) Characteristic of a good explosive is
(a) High energy of oxidation
(c) Positive oxygen balance
(iv) Example of high explosive is
(b) Glycerol
(d) Phenol
(b) Slow and controlled oxidation rate
(d) Decomposition rate should be slow
(a) TNT (b) Gun powder (c) Lead azide
(v) Example of primary explosive is
(a) Ammonium nitrate (b) TNT (c) Lead azide
(vi) Gum powder is
(a) Primary explosive
(c) High explosive
(vii) Smokeless powder is
(b) Low explosive
(a) Tetracene (b) Nitrocellulose (c) Picric acid
(viii) Binary explosives are mixtures of other explosives with
(a) TNT (b) Dynamite (c) Nitrocellulose
(ix) Burning speed of safety fuse is
(a) 1 m sec –1 (b) 1 cm sec –1 (c) 100 m sec –1
(x) Black powder is
(a) Nitrocellulose (b) Mercury fulminate (c) Gun powder