Science-Tech

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Just born baby has the respiratory rate as.....
32 times/minute
yes
26 times/minute
no
18 times/minute
no
15 times/minute
no
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Uric acid is the chief nitrogenous wastes in.....
Frogs
no
Birds
yes
Fishes
no
Mankind
no
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The alkaloid naturally found in coffee, cocoa and cola nut is.....
Cocaine
no
Morphine
no
Tannin
no
Caffeine
yes
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The biggest single-celled organism is....
Yeast
no
Acetabularia
yes
Acetobacter
no
Amoeba
no
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The metal used for making aircrafts and rockets is.....
Lead
no
Aluminium
yes
Nickel
no
Copper
no
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Radar is used to.....
Locate submerged submarines
no
Receive signal from radio receivers
no
Detect and locate distant objects
yes
Locate geostationary satellites
no
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Which vein brings clean blood from the lungs into the heart?
Renal Vein
no
Pulmonary Vein
yes
Vena Cava
no
Hepatic Vein
no
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Myrmecology is study of....
Insects
no
Ants
yes
Crustaceans
no
Arthropods
no
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In galvanization, iron is coated with...
Copper
no
Zinc
yes
Tin
no
Nickel
no
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A hollow sphere of radius R, a hollow cube of side R and a thin circular plate of radius R, made up of the same material, are all heated to 20° C above room temperature. When left to cool in the room, which of them will reach the room temperature first?
Circular plate
no
Cube
no
Sphere
yes
All of them will reach the room temperature at the same time
no
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