Step 1: Analyze the options.
(A) Polyamide 6,6: Polyamide 6,6, also known as nylon 6,6, is a type of thermoplastic, not an elastomer. It is used in textiles and engineering plastics, but it does not exhibit the elastic properties characteristic of elastomers.
(B) Poly(ethylene terephthalate): Poly(ethylene terephthalate) (PET) is commonly used in fibers and containers. PET is a rigid plastic and does not show the elasticity needed for an elastomer.
(C) Vulcanized polybutadiene: Vulcanized polybutadiene is a well-known elastomer. The vulcanization process enhances the elasticity of the material, making it ideal for use in tires and various rubber products.
(D) High density polyethylene: High density polyethylene (HDPE) is a thermoplastic polymer, known for its strength and rigidity. It does not possess the elasticity required to be classified as an elastomer.
Step 2: Conclusion.
The correct answer is (C) Vulcanized polybutadiene, which is an elastomer due to its excellent elastic properties.
Final Answer: (C) Vulcanized polybutadiene
In a polymer recycling plant, polymer “X” was depolymerized by glycolysis in the presence of ethylene glycol and a suitable catalyst. The glycolysis reaction yielded the following compound: 
Identify the polymer “X” from the following options.
An electricity utility company charges ₹7 per kWh. If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy consumption? If the desk light is on for 2 more hours each night for the 180 days, what would be the percentage-increase in the cost of energy consumption?
In the context of the given figure, which one of the following options correctly represents the entries in the blocks labelled (i), (ii), (iii), and (iv), respectively?

A bag contains Violet (V), Yellow (Y), Red (R), and Green (G) balls. On counting them, the following results are obtained:
(i) The sum of Yellow balls and twice the number of Violet balls is 50.
(ii) The sum of Violet and Green balls is 50.
(iii) The sum of Yellow and Red balls is 50.
(iv) The sum of Violet and twice the number of Red balls is 50.
Which one of the following Pie charts correctly represents the balls in the bag?