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As per the Global Peace Index 2019, what is the position of India?
Where was the first Post Office opened in India?
What is the key to a successful education system?
How will improve the working conditions for teachers?
Do you know why Oil and Water does not mix together?
The atomic number of four elements P, Q, R, S are 6, 8, 10 and 12 respectively. The two elements which can react to form ionic compounds are: A. P and S B. Q and R C. P and R D. Q and S