hot water return

Raw dry rubber is heated with sulphur (5%-8% based on the requirement), zinc oxide (a filler, 5%) and accelerator (0.5% -1%) at 400-440K for about half an hour. As the sulphur quantity increases, the rubber becomes tougher. 50% sulphur gives ebonite (vulcanite) . An accelerator containing nitroge..

Chris is taking a hot shower. Which of the following could be the temperature of water? => 220°F or 100°F or 32°F or 15°F..

Hot concentrated nitric acid oxidises sulphur to sulphuric acid. Sulphur is further oxidised by the nascent oxygen to sulphur trioxide. Sulphur trioxide then combines with water to form sulphuric acid..

Biodiversity is not uniformly distributed across the geographical regions of the earth. Norma Myers developed the hot spots concept in 1988 to designate priority areas for in-situ conservation. The hot spots are the richest and the most threatened reservoirs of plant and animal ..

The apparatus is set as shown in figure 7.2. Copper turnings are taken in a round bottom flask. Concentrated sulphuric acid is added through the dropping funnel and the flask is carefully heated. Chemical reaction occurs and SO 2 vapours get displaced upwards. The sulp..

James and 3 of his friends cooked hot dogs at a country fair. James cooked 7 hot dogs, Cal cooked 8 hot dogs, Ken cooked 10 hot dogs and Marcus cooked 4 hot dogs. Choose the tally table that correctly represents these data. => Table 4 or Table 3 or ..

Iron does not react with water in the ordinary temperature. It reacts only with steam. When steam is passed over red-hot iron, iron (II,III) oxide and hydrogen gas are formed..

Summary - Water is a compound containing the elements of hydrogen and oxygen combined chemically in the ratio of 2:1. The 3 states of water i.e., ice, water and water vapour are interconvertible by heating or cooling. Water contains dissol..

A shipment of 20 digital cameras is rejected if 5 are checked for defects and at least 1 is found to be defective. Find the probability that shipment will be returned if there are actually 6 defective cameras. => 0.13 or 0.087 or 0.013 or 0.87..

James and 3 of his friends cooked hot dogs at a country fair. James cooked 7 hot dogs, Cal 8, Ken 10, and Marcus 4. Choose the tally table that represents these data correctly. => Table 4 or Table 3 or Table 1 or Table 2..