For a perfectly elastic collision, the coefficient of restitution (eee) is
With increase in impurities, the boiling point of water _________?
Which of the following is the hardest substance known?
Which of the following compounds form nitrites with nitrous acid?
Which vitamin is essential for RBC formation?
A cylindrical metal wire is reformed so that its length decreases by 20% with no change of volume. Its
resistance decreases by:
What happens to the gravitational force between two objects if the distance between them is doubled ?
What is the work done when a force of 20 N moves an object 5 meters?
Which of the following is present in the nucleus of an atom?