Questions

The "Pradhan Mantri Shram-Yogi Maandhan" scheme was launched on 15-02-2019. Under the PM-SYM scheme, the workers will get amount of Rs. 3,000 pension after attaining the age of 60 years. 

Convex mirror is used as rear view mirror in vehicles. Because the image is smaller, more image can fit onto the mirror, so a convex mirror provides for a larger field of view than a plane mirror. This is why they are useful.

Zoroastrianism, the ancient pre-Islamic religion of Iran that survives there in isolated areas and, more prosperously, in India, where the descendants of Zoroastrian Iranian (Persian) immigrants are known as Parsis, or Parsees.

Isotopes are variations of an element that have the same charge as the original element, but a different mass, which is caused by either more/less neutrons in the nucleus.