Q: Blood volume increases substantially during pregnancy, so that by childbirth, it exceeds its preconception volume by 30 percent, or approximately what? Choices: - 2-3 liters - 3-5 liters - 0-1 liters - 1-2 liters A:
1-2 liters

(Question)
Q: What is capable of altering the rate of time passing? Choices: - strong planetary fields - weak gravitational fields - strong magnetic fields - strong gravitational fields A:
(Answer)
strong gravitational fields

Ques: Q: What liquid is referred to as the "universal solvent"? Choices: - bromine - gasoline - blood - water A:
Ans: water

(Q).
Q: The mass percentage of a solution component is defined as the ratio of the component's mass to ________? Choices: - enough ' s mass - solvent's mass - liquid's mass - solution ' s mass A:
(A).
solution ' s mass

Ques:Q: What corrosive substances capable of dissolving many metals can cause contamination if spilled? Choices: - salts - bases - ions - acids A:

Ans:acids

Q: What involves the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide? Choices: - hydrogen reactions - chemical reactions - material reactions - combustion reactions A:
combustion reactions