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The correct answer is B
Which of the following pair of element – atomicity is correct?
I. Helium – monoatomic
II. Oxygen – triatomic
Which gas is added under pressure to make soft drinks fizzy?
Which law explains why planets move faster when they are closer to the Sun?
What happens to the boiling point of water at higher altitudes?
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called:
Choose the wrong statement
Which of the following fibers will melt when heated?
The SI unit of acceleration is_________.
The fossil of Archaeopteryx represents the evidence of origin of
Alkali metals have ______.
I. low melting points
II. low densities
