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32 + 15 = 48 48 – 13 = 34 34 + 11 = 45 45 – 9 = 36 36 + 7 = 43 43 – 5 =38 38 + 3 = 41 41 – 1 = 40
What does Mohs scale measure?
Why is commercial nitric acid typically yellow or brown in color?
Which of the following fibers will melt when heated?
How can a mixture of sand and salt be separated?
Which of the following scientists invented steam engine?
Which gas is evolved during the reaction of an acid with a metal?
Anesthesia which is administered during the surgeries in the hospitals is a mixture of which of the following gases?
The colour of neutral litmus solution is
The time period of a pendulum when taken to the Moon would:
Which is the best fire-extinguisher?