Q2.
When chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, containing equal numbers of molecules, and many scientists, doubting that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro’s number" by use of several different experimental designs.
A. When chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, containing equal numbers of molecules, and many scientists, doubting that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro’s number" by use of
B. The chemist Amedeo Avogadro (1776 – 1856), positing that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, and many scientists doubted that, even if this theory were true, the number could not be ever measured, while in the early 20th century, Perrin measured the value of "Avogadro’s number" using
C. The chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, but many scientists doubted that, even if this theory is true, the number could never be measured, but in the early 20th century, Perrin has measured the value of "Avogadro’s number" by use of
D. The chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, and many scientists doubted that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro’s number" using
E. The chemist Amedeo Avogadro (1776 – 1856), posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, although many scientists doubted that, even if this theory were true, the number could be ever measured, then in the early 20th century, Perrin, measuring the value of "Avogadro’s number" by use of
SC Questions September - 13 :Q1. Knocked from the asteroid belt, an asteroid that comes close to Earth may be captured by Earth’s gravitational field, ultimately
spiraling inward and, fully consumed during its fiery descent through the atmosphere while being a “falling star”, or is redirected at high speeds along a new trajectory.
(A) spiraling inward and, fully consumed during its fiery descent through the atmosphere while being a “falling star”, or is redirected
(B) having spiraled inward and, fully consumed when its fiery descent through the atmosphere to be a “falling star”, or is redirected
(C) having spiraled inward and being fully consumed when its fiery descent through the atmosphere as a “falling star”, or was redirected
(D) spiraling inward and, fully consumed during its fiery descent through the atmosphere to act like a “falling star”, or be redirected
(E) spiraling inward and being fully consumed during its fiery descent through the atmosphere as a “falling star”, or be redirected
Difficulty - Hard
Q2.
When chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, containing equal numbers of molecules, and many scientists, doubting that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro’s number" by use of several different experimental designs.
A. When chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, containing equal numbers of molecules, and many scientists, doubting that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro’s number" by use of
B. The chemist Amedeo Avogadro (1776 – 1856), positing that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, and many scientists doubted that, even if this theory were true, the number could not be ever measured, while in the early 20th century, Perrin measured the value of "Avogadro’s number" using
C. The chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, but many scientists doubted that, even if this theory is true, the number could never be measured, but in the early 20th century, Perrin has measured the value of "Avogadro’s number" by use of
D. The chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, and many scientists doubted that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro’s number" using
E. The chemist Amedeo Avogadro (1776 – 1856), posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, although many scientists doubted that, even if this theory were true, the number could be ever measured, then in the early 20th century, Perrin, measuring the value of "Avogadro’s number" by use of
Anik005
1.John has lived in the same house for twenty years. 2 John has been leaving in the same house for twenty years. Are these two sentences mean the same meaning?
No, has and has been have different meaning