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The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________?
A. 1120 ft
B. 120 ft
C. 56 ft
D. 100 ft
E. None of these
Everyday Science Mcqs · Easy · 1 month ago
The mesosphere ranges from ________ to _________?
A. 46 km to 85 km
B. 48 km to 85 km
C. 50 km to 85 km
D. 52 km to 85 km
Everyday Science Mcqs · Easy · 1 month ago
Newton metre is a unit of __________.
A. Substance
B. Length
C. torque
D. Work
Everyday Science Mcqs · Easy · 1 month ago
For seeing objects at the surface of water from a submarine under water, the instrument used is ________?
A. Periscope
B. Telescope
C. Kaleidoscope
D. Spectroscope
Everyday Science Mcqs · Easy · 1 month ago
Which of the following is not a contagious disease?
A. Hysteria
B. Measles
C. Typhoid
D. Influenza
Everyday Science Mcqs · Easy · 1 month ago
How many eyes does a worm have?
A. Two
B. Three
C. One
D. None
Everyday Science Mcqs · Easy · 1 month ago
According to many, including the Guinness Book of World Record,________is the world’s rarest mineral?
A. Painite
B. Benitoite
C. Jadeite
D. Taaffeite
Everyday Science Mcqs · Easy · 1 month ago
Covalent network crystals have_____________?
A. higher melting point then molecular crystals
B. lower melting point then molecular crystals
C. discrete molecules linked by Van der waals forces
D. hydrogen bonding
Everyday Science Mcqs · Easy · 1 month ago
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