The inner most part of the earth is__________?
The inner most part of the earth is__________?
A. Crust
B. Mental
C. Core
D. None of these
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One Gross is equal to___________?
One Gross is equal to___________?A. 5 Dozen
B. 10 Dozen
C. 12 Dozen
D. None of themA gross refers to a group of 144 items (a dozen dozen or a square dozen, 122). A great gross refers to a group of 1728 items (a dozen gross or a cubic dozen, 123). A small gross or a great hundred refers to a group of 120 items (ten dozen, 10×12).
The common refrigerant used in domestic Refrigerator is_____________?
The common refrigerant used in domestic Refrigerator is_____________?
A. Neon
B. Spirit
C. Freon/Ammonia
D. MethaneThe speed of sound in air at sea level is approximately____________?
The speed of sound in air at sea level is approximately____________?
A. 300 meter per second
B. 320 meter per second
C. 340 meters per second
D. 370 meter per second“Green House Effect” means:____________?
“Green House Effect” means:____________?A. Pollution
B. Prevention of ultraviolet rays
C. Trapg of Solar energy due to atmospheric carbon dioxide
D. D. NoneThe greenhouse effect is the problem caused by increased quantities of gases such as carbon dioxide in the air. These gases trap the heat from the sun, and cause a gradual rise in the temperature of the Earth’s atmosphere.
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.1 yard =___________?
1 yard =___________?A. 3 feet
B. 6 feet
C. 2.4 feet
D. 12 feet