A mature tree will take how much carbon dioxide from the atmosphere annually:
A. 20kg
B. 22kg
C. 25kg
D. None of these
Modification of stationery barchans result in the formation of:
A. Seif
B. Parabolic
C. Dune
D. None of these
Which of the following uses source of light:
A. Non-perspective
B. Conventional
C. Perspective
D. None of these
Which of the following is used in optical fiber:
A. Glass particles
B. Glass threads
C. Tiny particles
D. None of these
Which gas is combustible:
A. Nitrogen
B. Helium
C. Hydrogen
D. None of these
How much blood human body contain:
A. 3-4 liters
B. 5-6 liters
C. 7-8 liters
D. None of these
Nonstick cooking utensils are coated with:
A. Polystyrene
B. Teflon
C. PVC
D. None of these
Car batteries uses ___ that react with lead plates to generate electricity:
A. Hydrocloric acid
B. Nitric acid
C. Sulphuric acid
D. None of these
Snow capped mountain are found on which of the following planet:
A. Venus
B. Mars
C. Pluto
D. None of these
Which one if not a vestigial organ of human being:
A. Coccyx
B. Appendix
C. Eyelid
D. None of these
The respiratory problem common in smokers is:
A. Tuberculosis
B. Emphysema
C. Asthma
D. None of these
The hardest thing present in a human body is:
A. Skull bones
B. Dental enamel
C. Ribs
D. None of these
In the atmosphere if the temperature is low then the pressure is:
A. Normal
B. Low
C. High
D. None of these
The blotting paper help absorbs liquid by:
A. Viscosity
B. Surface tension
C. Capillary action
D. None of these
Which part of body becomes lethal due to attack of Covid-19:
A. Lungs
B. Liver
C. Throat
D. None of these
Deficiency of ___ causes anemia:
A. Iodine
B. Calcium
C. Iron
D. None of these
Chemical substances that increase Earth’s surface temperature is known as:
A. Green house gases
B. Global warming
C. Climate change
D. None of these
Which metal is liquid at room temperature:
A. Zinc
B. Lead
C. Mercury
D. None of these
Stethoscope was invented by:
A. Rene Laennec
B. Martin
C. David
D. None of these
Pneumonia is caused by which bacteria:
A. Bacilious
B. Cocci
C. Vibrio
D. None of these
