Discussion
Read the following statements :
A. Pittsburgh was once an important steel city of the United States of America.
R. Iron ore was available in plenty in Pittsburgh and coal came from the mines at Minnesota.
Choose the correct option.
Answer: C
A is true but R is false, so the answer is A is true but R is false.
Pittsburgh was once an important steel city of the USA. The NCERT case study explains why: coal was available locally, while the iron ore came from the mines at Minnesota, brought in by water. Its position on the rivers and the railways gave it cheap transport for both raw materials and steel.
R reverses the two raw materials: it says the iron ore was local and the coal came from Minnesota. That makes R false, so it cannot explain A, which rules out the first two options, and A itself is true, which rules out 'Both A and R are false'.
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