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.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct term is Oil or water-based paint, which serves as 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).
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct answer is increases the strength of concrete. Curing helps to retain moisture in the concrete, allowing it to achieve greater strength.
Step 3
1.1.3 Electroplating can be applied using (electrodes/electro jacks/electrolysis).
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The answer is electrolysis. This is the process in which the metal is deposited onto a surface using an electrical current.
Step 4
1.1.4 Powder coating is the process of applying a layer of (plastic/paint/zinc) to a metal.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct option is plastic. Powder coating involves applying a dry powder that is then cured under heat to form a solid coating.
Step 5
1.1.5 Galvanising is the process of applying a (zinc/copper/tin) coating to the base of metals.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct term is zinc. Galvanising provides rust protection by coating the base metal with zinc.
