On 5 March 2017, who launched an artificial intelligence – driven chatbot named ‘EVA (Electronic Virtual Assistant)’ for customer services?
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The red planet is ___________.
A ball is dropped from a height of 10 m. It strikes the ground and rebounds up to a height of 2. m. During the collision, the per cent loss in the kinetic energy is
An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force of gravity in this process?
An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?
Who launched Pradhan Mantri Vaya Vandana Yojana (PMVVY) in July 2017?
Silk worms feed on
Which of the following is an amphoteric oxide?
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