Matter in Our Surroundings — Science STD 9 — Question

The graph below shows the distance travelled and the time taken by four cars.
Which car travelled the slowest:

Identify the action that can cause motion of a book placed on a table:

1. y = constant: Uniform motion
2. a = constant: __________

The chemical symbol for nitrogen gas is:

The atmosphere consisting of a large number of gases is held to the earth by:

The term 'Fisheries' refers to ___________________:

On listening to his friend, Amit said “Moon does not work as it goes round our earth”, because:
A: Moon displaces perpendicular to direction of force.
B: No force acts on the moon.
C: Momentum change is non-zero.
Which of the combination is/ are correct?

The nuclear model of the atom was suggested by:

A particle is moving in a circular path of radius r. Its displacement after moving through half the circle would be:

Which of the following is not an outcome of the irrigation projects in India?