Limestone changes into ________ due to metamorphism.
A. Marble
B. Quartzite
C. Gneiss
D. Schists
Answer: Option A
A. Marble
B. Quartzite
C. Gneiss
D. Schists
Answer: Option A
The years 1700, 1800 and 1900 were
A. Leap years
B. Not leap years
C. Famine years
D. Years of natural calamities
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