Karnatak University 2006 SCIENCE — I ( Physics & Chemistry ) - Question Paper

PART – A
Four options are suggested to every of the subsequent ques. / incomplete
statements. select the most improper option and write the alphabet of the
chosen ans in the box given. 40 × one = 40
1. The layer of the atmosphere where clouds are formed is
(A) troposphere (B) mesosphere
(C) ionosphere (D) stratosphere.
2. Solidified magma is called
(A) sedimentary rock (B) igneous rock
(C) lava (D) metamorphic rock.
3. The gas which is responsible for greenhouse effect is
(A) CO (B) SO 2
(C) CO two (D) NO two .
4. The layer of the earth which is constantly fractured and reorganised again is
(A) crust (B) outer core
(C) inner core (D) mantle.
5. The largest planet in the solar system is
(A) Saturn (B) Uranus
(C) Earth (D) Jupiter.
6. The time taken by the solar wind particles to reach the earth is about
(A) five days (B) 10 days
(C) 15 days (D) 20 days.
7. The gaseous cloud around the comet is made of
(A) frozen gases and dust (B) iron particles
(C) water vapours and carbon dioxide (D) hydrogen and iron particles.
8. The dense contracting gaseous mass is formed by the accretion of hydrogen and
helium. At this stage of the life cycle the star is called a
(A) red giant (B) proto star
(C) neutron star (D) white dwarf.
9.The temperature of a star can be estimated by observing its
(A) shape (B) colour
(C) mass (D) size.
10. The crab nebula is obtained in the constellation
(A) Orion (B) Scorpius
(C) Taurus (D) Ursa major.
11. The 1st Indian national satellite is
(A) Rohini (B) Apple
(C) Aryabhatta (D) Bhaskara.
12. The kind of the satellite to be used to cover the whole earth surface soon is
(A) space craft (B) sounding rocket
(C)geostationary satellite (D) polar satellite.
13. The form of energy in a sound wave is
(A) mechanical (B) radiation
(C)chemical (D) electrical.
14. An object is displaced to a distance of 10 metres by applying 50 N of force. Then the
work done in joule is
(A) five (B) 10
(C) 60 (D) 500.
15. The rays collected by the parabolic reflectors placed in a solar furnace are

Earning:   Approval pending.