The speed of sound is maximum when A) Air a 0 °C B) Water at 25 °C C) Water at 90 °C D) None of these
The gemstone ruby is actually—– with traces of some other elements A) Pure Rubidrum B) Aluminum Oxide C) Rubidium Oxide D) None of these
Business with the help of the internet is called: A) Courier service B) E-Commerce C) Credit card D) None of these
In a mixture of 60 liters, the ratio of milk and water is 2:1. What amount of water must be added to make the ratio of milk and water as 1:2? A) 10 B) 20 C) 60 D) None of these
With no air resistance regardless of their masses, the bodies fall with A) Same acceleration B) Different acceleration C) Same velocity D) None of these
The literal meaning of Islam is: A) to bow down the neck B) to seek safety C) to obey D) All of these
2021 Nobel prize of medicine given to A) David Julius B) Ardem Patapoutian C) Both A & B D) None of these