1. 2 hours
2. 3 hours 20 minutes
3. 4 hours 40 minutes
4. 3 hours 12 minutes
Ans : D
Under which of the following conditions will iron rust
Which of the following is NOT true about the Periodic Table
Round the following number to four significant figures and express the result in standard exponential notation 0.006543210?
Never found uncombined on Earth, what element occurs abundantly in limestone, gypsum and fluorite
What is the concentration, in parts per billion, of a solution that contains 1 microgram of solute per liter?
Which element has the following ground-state electron configuration 1s22s22p6?
To the nearest whole number, convert 0.300 atmosphere into millimeters of mercury, or torr
According to Bronsted-Lowry definition, a base is
Which of the following represents the simplest chemical formula
Which of the following instruments would typically be used to measure the smallest quantities of mass
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