Q170
S1: Machines have parts made of iron. P: They must be painted or chrome plated. Q: Some parts rub against each other. R: Iron gets rusted. S: They must be lubricated with oil or grease. S6: When the machine is not in use, it should be covered. The Proper sequence should be:
A.
PRQS
B.
QRPS
C.
QSRP
D.
RPQS
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Iron gets rusted. They must be painted or chrome plated. Some parts rub against each other. They must be lubricated with oil or grease.