Universe and Space

Q. 21. Which theory is the prevailing model of the evolution of the Universe
1. Heliocentric theory
2. Geocentric theory
3. Big-Bang theory
4. None of the above
Q. 22. Mars orbit around Sun in
1. 657 days
2. 667 days
3. 687 days
4. 697 days
Q. 23.Which galaxy consists of a flat, rotating disk
1. Spiral galaxy
2. Elliptical galaxy
3. Irregular galaxy
4. Barred Spiral galaxy
Q. 24. Which galaxy having an approximately ellipsoidal shape and a smooth image
1. Spiral galaxy
2. Elliptical galaxy
3. Irregular galaxy
4. Barred spiral galaxy
Q. 25. Which galaxies tend to be surrounded by large numbers of globular clusters
1. Spiral galaxy
2. Elliptical galaxy
3. Irregular galaxy
4. Barred spiral galaxy