In night, when photosynthesis is stopped, plants__________.
A- take in Carbon Dioxide
B-take in Oxygen
C-give off Carbon Dioxide
D-give off Oxygen
In a very low temperature which from the following will freeze at last?
A. River water
B. Mineral water
C. Sea water
D. None of these
Deficiency of Vitamin-A results in __________.
A. Night blindness
B. rickets
C. hair fall
D. scurvy (more…)
During winter in cold countries, the __________ is mixed to melt the ice on the icy roads.
A. Water
B. Chlorine
C. Carbon dioxide
D. Salt
The lifespan of White Blood Cells is __________ days.
A. 1 – 5 days
B. 3 – 7 days
C. 4 – 8 days
D. 5 – 21 days (more…)
Each day human body breathe in __________ liters of air.
A. 15,000 to 20,000
B. 10,000 to 15,000
C. 5,000 to 10,000
D. 20,000 to 25,000 (more…)
Analytical solutions to Quadratic equations were introduced by__________.
A. Al-Khawarzimi
B. Al-Haitham
C. IsasacNewton
D. Pythagoras (more…)
The 2018 Nobel Prize in Physiology or Medicine has been awarded jointly to James P. Allison and Tasuku Honjo for their discovery of which
cancer?
A. Immunotherapy
B. Radiation
C. Surgery
D. Chemotherapy (more…)
Apiculture refers
to___________.
A. Science of bee keeping
B. Rearing silk worms
C. Science of insects
D. Science of cultural norms (more…)
Who invented Logarithm
Tables?
A. John Adams
B. John William
C. John Napier
D. John Harrison (more…)