tattvamasi weekly quiz

Hi,today i am going to ask you some questions:

Q1. Which theory proposes that the universe expanded rapidly from a highly compressed state?
a.Copernican model b.Big-Bang theory c. Helio-centric theory d.Galileo theory

Q2.what is the name of the heart's natural pacemaker?
a. Sino cordial node b. Sino artial node c. Sino venal node d. Sino caprial node

Q3.what is the minimum speed required for a space craft to get out of the Earth's gravitational force called "escape velocity"?
a.18640 km/hr b.22860 km/hr c.29000 km/hr d.40320 km/hr

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