A polymer is termed as an ‘elastomer’, if its percentage elongation is more than 100%. An elastomer is termed as ‘rubber’ if its percentage elongation is more than _______________ percent ?

Related Mcqs:

1. The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as__________________?

   A. Rigid B. Tough C. Ductile D. Plastic...

2. In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about _____________ percent?

   A. 0.25 B. 0.5 C. 0.75 D. 1...

3. Vapor pressure of water at 100°C is about _______________ bar?

   A. 0.1013 B. 1.013 C. 10.13 D. 101.3...

4. If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be ______________ c.c?

   A. 100 B. 50 C. 205 D. 200...

5. Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?

   A. 80.38 B. 80 C. 79.62 D. 78.51...

6. The material used for coating the welding electrode is termed as the___________________?

   A. Flux B. Slag C. Protective layer D. Binder...

7. The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant ?

   A. Chlorine B. Alkalis C. Benzene hexachloride D. Alkyl benzene sulphonate (ABS)...

8. Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of______________?

   A. Fusion B. Vaporisation C. Transition D. None of these...

9. The temperature at which a real gas obeys Boyle’s law is termed as the__________________?

   A. Triple point B. Boyle’s temperature C. Eutectic point D. Inversion temperature...

10. Heat of solution in a system in which both solute and solvent are liquids is termed as_________________?

    A. Heat of solvation B. Heat of hydration C. Standard integral heat of solution D. Heat of mixing...