The brightest colour emitted by the sun is:
The brightest colour emitted by the sun is:
A. Violet
B. Yellow-Green
C. Green- Blue
D. Red
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Second name of ethyl alcohol is___________?
Second name of ethyl alcohol is___________?A. Ethene
B. Ethanol
C. Propyle
D. noneWhich of the following is not a contagious disease?
Which of the following is not a contagious disease?A. Hysteria
B. Measles
C. Typhoid
D. InfluenzaThe number of spark plugs needed in a diesel engine is__________?
The number of spark plugs needed in a diesel engine is__________?
A. 2
B. 3
C. 0
D. 4
E. None of theseNuclear radiation is emitted by those elements whose:
Nuclear radiation is emitted by those elements whose:
A. molecules are stable
B. molecules are unstable
C. nuclei are stable
D. nuclei are unstableThe percentage of plasma in human Blood is _________?
The percentage of plasma in human Blood is _________?A. 50%
B. 55%
C. 60%
D. 80%Stethoscope was invented by _______ ?
Stethoscope was invented by _______ ?A. Rene Laennec
B. Steven Sasson
C. Martin Cooper
D. Dave Hyatt
The stethoscope was invented in France in 1816 by René Laennec at the Necker-Enfants Malades Hospital in Paris. It consisted of a wooden tube and was monaural. Laennec invented the stethoscope because he was not comfortable placing his ear directly onto a woman’s chest to listen to her heart.