1.1 Choose the correct word(s) from those given in brackets - NSC Civil Technology Construction - Question 1 - 2021 - Paper 1
Question 1
1.1 Choose the correct word(s) from those given in brackets. Write only the word(s) next to the question numbers (1.1.1 to 1.1.5) in the ANSWER BOOK, e.g. 1.1.6 case... show full transcript
Worked Solution & Example Answer:1.1 Choose the correct word(s) from those given in brackets - NSC Civil Technology Construction - Question 1 - 2021 - Paper 1
Step 1
1.1.1 (Oil or water-based paint/Silicone/Acid) is used to protect metal against corrosion.
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Answer
The correct answer is Oil or water-based paint. These are effective in providing a protective layer against corrosion on metal surfaces.
Step 2
1.1.2 Curing (increases the strength of concrete/increases the density of concrete/allows concrete to set faster).
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Answer
The correct answer is increases the strength of concrete. Curing enables proper hydration of concrete, which enhances its strength.
Step 3
1.1.3 Electroplating can be applied using (electrodes/electro jacks/electrolysis).
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Answer
The correct answer is electrolysis. Electroplating involves using electric current to deposit a layer of material onto a substrate.
Step 4
1.1.4 Powder coating is the process of applying a layer of (plastic/paint/zinc) to a metal.
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Answer
The correct answer is plastic. Powder coating involves applying a dry powder that is then cured under heat to form a durable finish.
Step 5
1.1.5 Galvanising is the process of applying a (zinc/copper/tin) coating to the base of metals.
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Answer
The correct answer is zinc. Galvanising involves coating metal with zinc to prevent rusting.
