2101. The same side of the moon always faces th earth because :
A. The period of revolution of the moon is equal to the period of rotation *
B. Earth moves with the same speed
C. It is natural phenomenon
D. Moon cannot change its position
2102. Which of the following is an internal command ?
A. Diskcopy
B. RMDIR *
C. Format
D. CHKDSK
2103. liquids are :
A. Poor conductors of heat *
B. Good conductors of heat
C. Worst conductors of heat
D. Perfect insulators
2104. If an iron piece remains exposed to air and dampness, It gets rust on it . Scientifically speaking rust is :
A. Iron oxide *
B. A kind of moss
C. Corrosive quality of damp air
D. The natural wearing of iron
2105. Which of the following air carries no moisture ?
A. Dry air *
B. Warm air
C. Cool air
D. Icy wind
2106. Frost is not formed generally on cloudy nights reason ?
A lack of water vapor in the atmosphere
B. Clouds produce disturbances and air currents that do not encourage frosty conditions.
C. Clouds prevent radiation and therefore help the ground temperature remain higher *
D. The clouds have taken away the air’s moisture.
2107. Lightning is caused when :
A. Similar charges of electricity rust towards each other
B. Inverse charges in various mists separate the obstruction presented by the mediating air *
C. Clouds strike airborne impurities, causing a massive friction flare-up.
D. The ethereal clouds are pulled by Earth.
2108. Liver, Milk, Egg yolk, Fish liver oil are the source of Vitamin :
A. Vitamin A
B. Vitamin B2
C. Vitamin D
D. Vitamin C *
2109. Who was appointed as Usher for Hijrat-e-Madinah ?
A. Hazrat Saad Bin Ubada RA
B. Hazrat Utab Bin Usaid RA
C. Hazrat Abdullah Bin Ariqat RA *
D. None of them
2110. Who was a historian Jurist, Philosopher, as well as a politician ?
A. Shams udding Ibn Khalkan
B. Abdur Rehman Ibn Khaldun *
C. Abu Bakar Muhammad Ibn Yahya