For the following questions answer them individually
Which of the following statements is/are true about the speed of sound in different media at 25°C
A. In steel, the speed of sound is 5960 m/s
B. In nickel, the speed of sound is 6240 km/s
Who won the 'Outstanding Parliamentarian' Award for 2017 given by the Indian Parliamentary Group (IPG)?
The ratio of the ages of the father and the son ten years from the present was 11:3. Ten year hence the ratio would be 21:13. What are the present ages of the father and the son?