This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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Here are the solutions to the questions: 12. The tapping of the distribution pipe from the base of the storage cistern is at.........mm To prevent sediment from entering the distribution pipe, it is typically tapped a short distance above the base of the cistern. A common standard for this height is 25 \, mm. The correct option is C. 13. The specific heat capacity of water is ....kJ/kg°c. The specific heat capacity of water is approximately 4.186 \, kJ/kg^. The correct option is B. 14. ...................is the ability to do work. Energy is defined as the ability to do work. The correct option is D. 15. The continuous leaking of a tap through a spindle is caused by faulty............ Leaks around the spindle of a tap are typically caused by worn or faulty packing (also known as gland packing or O-rings) which seals the spindle. The correct option is C. 16. Convert 37^ into ^ Step 1: Use the conversion formula for Celsius to Fahrenheit. ^ = (^ × (9)/(5)) + 32 Step 2: Substitute the given temperature 37^ into the formula. ^ = (37 × 1.8) + 32 Step 3: Perform the multiplication and addition. ^ = 66.6 + 32 ^ = 98.6 Comparing this to the options, 98.4 is the closest value. The correct option is A. 17. The safety wear for protecting eyes from injury while chasing walls is called............goggles. When chasing walls, debris and dust are generated, requiring eye protection. Clear goggles are typically used for general eye protection in such tasks, providing visibility while shielding the eyes. The correct option is D. That's 2 down. 3 left today — send the next one.