pH value of water is _________?
pH value of water is _________?
A. 5
B. 5-6
C. 8.7-10.5
D. 6.5-8.5
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A. 955 joules
B. 990 joules
C. 1055 joules
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Sound travels about ___________times faster in water than in air.A. 2
B. 3
C. 4
D. 5Sound travels 4.3 times faster in water than air. In water, the particles are much closer together and they can quickly transmit vibration energy and the sound wave travels over four times faster than it would in air.
Which one of the following is the softest?
Which one of the following is the softest?A. sodium
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C. aluminium
D. lithiumAll of the following statements are incorrect except:
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A. Precision and accuracy should go side by side in a scientific work
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In human osmoregulation takes place by___________?A. Liver
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B. 12
C. 19
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