Improvement in Food Resources — Science STD 9 — Question

9800 joule of energy was spent to raise a mass of 50kg, the mass was raised to a height of:

A girl stands on a box having 60cm length, 40cm breadth and 20cm width in three ways. In which of the following cases, pressure exerted by the brick will be:

Name a physical quantity that remains constant in a uniform circular motion:

A body moving along a circular path will have:

Two miscible liquids having different boiling points can be separated by:

Which of the following is a membrane enclosed organelle found in eukaryotic cells containing most of the cells genetic material?

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

1. Increasing pressure on hydrogen contained in a closed container.
2. Some hydrogen gas leaking out of the container.
3. Increasing the volume of the container of hydrogen gas.
4. Adding more hydrogen gas to the container without increasing the volume of the container.

According to the third law of motion, action and reaction:

1. Always act on the same body but in opposite directions.
2. Always act on different bodies in opposite directions.
3. Have same magnitudes and directions.
4. Act on either body at normal to each other.

Which of the following correctly represent the electronic distribution in the Mg atom?