The color of blood is red due to __________?
A. Hemoglobin B. Neutrophils B. Eosinophils C. Hematocrit
What is total area of the earth?
A. 510.94 million km² B. 492.102 million km² C. 392.023 million km² D. 692.192 million km²
Which of the following is not a fat soluble vitamin?
A. Vitamin A B. Vitamin D C. Vitamin B complex D. Vitamin K
The Doppler’s effect is applicable for_________?
A. light waves only B. sound waves only C. Both Light waves and sound ways D. None of these
SONAR is based on the principle of___________?
A. Echo B. reverberation C. resonance D. None of these
Which planet is losing its atmosphere at faster than the earth?
A. Mecury B. Venus C. Mars D. Jupiter
Underground water and the water on the earth’s surface is called?
A. Mezosphere B. Ionosphere C. Hydrosphere D. None of these
Short sightedness is due to__________?
A. Shifting of the iris B. Elongation of eyeballs C. Weakening of the retina D. Weaker muscles
Lignite, bituminous & anthracite are different rank of _________?
A. Iron B. Coal C. Wood D. None of these