1481. The planet of the solar system which has maximum number of Moon is :

A. Jupiter *
B. Venus
C. Saturn
D. Uranus
E. None of these

1482. sun is a :

A. Planet
B. Comet
C. Satellite
D. Aurora
E. None of these *

1483. The age of the solar system is :

A. 4.5 Billion years *
B. 3.5 Billion years
C. 4 Billion Years
D. 5 Billion Years
E. None of these

1484. A unit lenght equal to the average distance between the earth and the sun is called :

A. Light Year
B. Astronomical Unit *
C. Parsec
D. Parallax
E. None of these

1485. An eclipse of the sun occurs when :

A: The moon is between the sun and the earth *
B. The earth is located between the earth and the sun
C. The moon is influenced by the earth’s shadow.
D. None of these *

1486. THe ozone layer protects the earth from rays sent down by the sun :

A. Ultraviolet rays *
B. Infrared rays
C. Gamma rays
D. Radioactive rays
E. None of these

1487. The ozone layer is present about 30 miles (50km) in atmosphere above the earth .The stratum (layer) of atmosphere in which ozone layer lies is called as :

A. Exosphere
B. Mesosphere
C. Stratosphere *
D. Ionosphere
E. None of these

1488. Which rocks are formed by the alternation of Pre-existing rocks by great heat or pressure?

A. Igneous rocks
B. Sedimentary rocks
C. Metamorphic rocks *
D. Acid rocks
E. None of them

1489. The most abundant natural Iron oxides are :

A. Magnetite and pyrite
B. Magnetite and Bauxite
C. Hematite and Pyrite
D. Hematite and Magnetite *
E. None of these

1490. The two most abundant elements in sea water are :

A. Sodium and potassium
B. Sodium and Calcium
C. Sodium and chlorine *
D. Chlorine and Iodine
E. None of them