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Let length = 100 and width = 100. New length = 120, new width = 90. Original area = 100 × 100 = 10000. New area = 120 × 90 = 10800. Percentage change = [(10800 - 10000) / 10000] × 100 = 8% increase. Answer: a) 8% increase.
In a compound, the elements are always present in definite proportions by:
In the periodic table of elements, what happens to the atomic radius as you move from left to right across a period?
The fossil of Archaeopteryx represents the evidence of origin of
On a clean glass plate, a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
What is the chemical name for baking soda?
Which of the following is a noble gas ?
What is the chemical name of the Laughing Gas?
_________is a formula for rust.
Which of the following is a water soluble vitamin?
What is the chemical name of baking soda?