B. White. red and yellow

C. Yellow, green and blue

D. Orange, back and violet

A. New Renaissance

B. Tadhkira

D. Al-Masudi

E. None of these

A. ln the middle pan

B. At the bottom

C. Uniformly throughout the water body

A. Chemical Reaction

B. None of these

C. Nuclear reaction

D. Fission nuclear reaction

B. Oxygen

C. Carbon Dioxide

D. Silicon

A. 4

B. 6

D. 7

A. The mass of the astronaut is reduced to zero

B. Gravity inside the spacecraft ceases to act

C. The astronaut is outside the influence of the earths gravitational force

A. Galileo Galilie

B. None

D. John Kepler

A. 2 years

C. 98 days

D. None of these

E. 365 days

A. 4 feet

B. 12 feet

C. None of these

D. 6 feet

A. Plato

C. Newton

D. Einstein

A. Sex organ

B. Liver

D. Heart

A. 9.510⁶ km

B. 9.510⁹ km

C. 9.510¹⁸ km

B. fast

C. equal to the velocity of light

D. with zero velocity

A. 1120 ft

C. 120 ft

D. None of these

E. 100 ft

A. Barometer

B. Hydrometer

C. Hygrometer

B. sea foods

C. fresh vegetables and fruits

D. seeds

A. 37

B. Room Temperature

C. None of these

D. 0 C

B. picture cannot be transmitted clearly after a specific distance

C. the strength of T.V. waves is very limited

D. the air is not a good conductor of light and sound/waves

A. Reacting chemically with dirt

B. Increasing the temperature of water

D. Dissolving dirt

A. 60%

B. 72%

C. 65%

A. 230

B. 280

D. 206

C. Zero

D. None of these

A. Stratosphere

B. Troposphere

D. Mesosphere

E. None of these

B. M = ce²

C. E = cm²

D. M = ec²

A. Concave-convex lens

B. Convex-concave lens

D. Convex lens

A. 6

C. 4

D. 3

A. Calcium nitrate

C. Calcium carbonate

D. Calcium sulphate

A. Methane

C. Carbon dioxide

D. Nitrogen

A. Transverse

C. Potential

D. Mechanical

A. Groove

B. Trench

C. None of these

D. Mangrove

B. Clay

C. Cabon Dioxide

D. Silicon

A. Ears

C. Lungs

D. Brain

B. Rain forests

C. Movement of clouds

D. Rise in temperature

E. Revolution of earth

A. None

C. A beetle

D. A fruit

A. Circular

B. Parabolic

D. Elliptical

B. Uranus

C. Mercury

D. Pluto

B. 81.1 C

C. 98.6 C

D. 21.7 C

A. Mars

C. Jupiter

D. Mercury

A. Salinity in Urine

B. Amount of hemoglobin

D. The body pH value

A. The rubbing of the comb with the hair

B. The hair barging against the charged comb

D. None of the above

A. Optical fiber

C. Transistor

D. Decoder

E. None of these

B. Glaciers

C. Volcanoes

D. Fertile land

E. Islands

A. Fungicides

B. Herbicides

C. None of these

E. Insecticides

A. Electromagnetic force and gravitational force

B. Gravitational force and weak nuclear force

C. None of these

E. Weak nuclear force and strong nuclear force

A. Inheritance for acquired characters

C. None of these

D. Competition for survival

E. Natural selection

A. Increase the number of elections

B. None of these

C. Accelerate the neutrons

E. Decrease the number of electrons

A. One third

B. One fourth

D. One fifth

B. Lungs

C. Heart

D. Kidneys

A. Destruction of bacteria

C. Utilization of energy

D. Prevention of anemia