861. Human bone does not contain_________?
A. Calcium
B. Chondroitin sulfate
C. Boron
D. phosphate
862. Which of the following in the human body is affected by leukemia?
A. Blood
B. Lungs
C. Eyes
D. Nerves
863. The reaction between methane and chlorine in diffused sunlight is__________?
A. Oxidation
B. Reduction
C. Polymerisation
D. Radical substitution
864. At what temperature does silver melt?
A. 275 °C
B. 327 °C
C.961.8 °C
D. 100 °C
865. Science is derived from Latin word “scientia” which means_________?
A. Reasoning
B. Logic
C. Knowledge
D. Life
866. Calculus was invented by________?
A. Al-khawarzimi
B. Pythagoras
C. IsaaC Newton
D. Al.kindi
867. Analytical solutions to Quadratic equations were introduced by__________?
A. Al-Khawarzimi
B. Al-haitham
C. IsasacNewton
D. Pythagoras
868. Study of energy production in living bodies is called_________?
A. Biology
B. Biomechanics
C. Bioenergetics
D. Aerodynamics
869. Earth rotates the sun in___________?
A. 23 hours 56 min 4 sec
B. 24 hours
C. 23 hours 57 min 9 sec
D. Non of above
870. Who created periodic table?
A. Faraday
B. Lavoisier
C. Arrhenius
D. Mendeleev