Which glass is usually used in optical work ?

Related Mcqs:

SO2 is bubbled through hot sugar cane juice to_______________?

A. Act as an acidifying agent B. Increase its concentration C. Increase the amount of molasses D. Increase the crystal size...

Tall oil obtained as a by-product from the black liquor recovery is________________?

A. A black, sticky & viscous liquid B. Used in the manufacture of greases, emulsions & soaps C. Composed mainly of rosin & fatty acids D. All A , B. & C....

Alum is commercially produced from___________________?

A. Gypsum B. Feldspar C. Galena D. Bauxite...

Carbon content of pitch (residue of coal tar distillation) is around ________________ percent?

A. 70 B. 55 C. 80 D. 94...

Dacron (or Terylene) fibres as compared to nylon fibres have__________________?

A. Better heat & acid resistant properties B. Poorer resistance to alkalis C. Poorer dyeability D. All A , B. and C....