Options:
- A. gravity
- B. winds
- C. clouds
- D. rotation of the Earth
View Answer
A. gravity
Everyday Science
The main cause of air pollution is __________?
Options:
- A. Burning Of Fuels
- B. Forests
- C. Fertilizers
- D. None of these
View Answer
A. Burning Of Fuels
_______________ causes biomagnification problem in the Ecosystem.
Options:
- A. Lead
- B. Mercury
- C. Chromium
- D. Copper
View Answer
B. Mercury
Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the _______?
Options:
- A. Centripetal force due to the earth
- B. Earth
- C. Pressure of the atmosphere
- D. Moon
View Answer
B. Earth
B12 deficiency can produce__________?
Options:
- A. Insomnia
- B. Microcytic anemia
- C. Pernicious anemia
- D. None Of these
View Answer
C. Pernicious anemia
In onion pink color is due_____ ?
Options:
- A. anthocyanin
- B. Carotene
- C. Xanthophylls
- D. None of these
View Answer
A. anthocyanin
Short sightedness is due to__________?
Options:
- A. Shifting of the iris
- B. Elongation of eyeballs
- C. Weakening of the retina
- D. Weaker muscles
View Answer
B. Elongation of eyeballs
Plasmids are most often found in:
Options:
- A. Bacteria
- B. Virus
- C. Fungi
- D. Viroid
View Answer
A. Bacteria
Which water will freeze first?
Options:
- A. Hot
- B. Cold
- C. Both
- D. None
View Answer
A. Hot
An egg sinks in soft water but floats in a concentrated solution of salt because?
Options:
- A. egg absorbs salt from the solution and expands
- B. albumin dissolves in salt solution and egg becomes lighter
- C. the density of salt solution exceeds the density of eggs
- D. water has high surface tension
View Answer
C. the density of salt solution exceeds the density of eggs