Q1: The rolling process can not be used to produce

ANS:C - tubes

The rolling process can be used to produce all of the options provided: plates, rods, tubes, and wires. Explanation:

1. Plates: The rolling process is commonly used to produce plates of various thicknesses. In plate rolling, a slab or ingot is passed through a series of rolling mills to reduce its thickness and increase its width. This results in plates with smooth surfaces and uniform thicknesses, suitable for a wide range of applications, including construction, manufacturing, and fabrication.
2. Rods: The rolling process can also be used to produce rods or bars of uniform cross-sections. In rod rolling, a billet or ingot is passed through a series of rolling mills with gradually reducing diameters to produce rods of the desired diameter and length. These rods are commonly used in construction, machining, and other industrial applications.
3. Tubes: The rolling process is widely used to produce tubes or pipes of various sizes and dimensions. In tube rolling, a hollow billet or shell is passed through a series of rolling mills with specially shaped rolls to gradually reduce its diameter and wall thickness while maintaining its length. This results in seamless or welded tubes suitable for applications such as structural support, fluid transportation, and heat exchangers.
4. Wires: The rolling process is extensively used to produce wires of various diameters. In wire rolling, a billet or ingot is passed through a series of rolling mills with progressively reducing gaps between rolls to elongate and reduce its diameter to the desired size. This results in wires with uniform cross-sections and smooth surfaces, suitable for a wide range of applications, including electrical wiring, fencing, and manufacturing of fasteners.