521. Which one can be considered as the unit of distance?

A.foothpath
B.heavy year
C.light year *
D.none of these

522. Which one is not a planet?

A.earth
B.venus
C.moon *
D.none of these

523. In which direction does the earth rotate on its axis?

A.east to west
B.west to east *
C.north to south
D.none of these

524. Which can be considered in representing the geographic cordinate system?

A.aptitude
B.latitude *
C.attitude
D.none of these

525. Which part of the body will affected mainly by fluoride pollution?

A.brain
B.liver
C.teeth *
D.none of these

526. How can we symbolically right the ozone gas?

A.O2
B.O3 *
C.CO2
D.none of these

527. Which of the following is not an electromagnetic wave?

A.sound waves *
B.radio waves
C.light waves
D.none of these

528. For what terminology is the abbreviation GPS being used, globally?

A.geo pakistan system
B.global positioning system *
C.google path system
D.none of these

529. Plotting of the vibrations cause by and earthquake on a paper is called?

A.photograph
B.earthograph
C.seismograph *
D.none of these

530. What is the scientific name of the atoms of the same element with different mass number?

A.subshells
B.isotopes *
C.orbitals
D.none of these