How is insulation measured? What type of star is the leftover center of an old star? What is the opposite of multiplaication? Why does cloud formation disappear as the air moves slowly towards the leeward side of a mountain? How much does 100 grams of lead cost? What are all the fractions of 33.6 percent? How would you write 1.2 in words? What are the disadvantages of a reflecting periscope? What were family like in 1200? How many more hundreds are there 5162 than 2162? What do you understand by the zero error of an instrument? Why an experiment must have control? What makes soap? Why does boxer discard his straw hat? What made Marie curie famous? When is friction generated? 100 gallon equals how many pounds? Why does the coefficient of friction have no unit? In the number 2145857 how does the digit in the thousands place compare to the digit 5 in the tenths place? How much cinnabar is needed to make one ounce of mercury?

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