Structure of the Atom — Science STD 9 — Question

Fish is an important aquatic food which is rich in proteins. The act of capturing, preservation and utilization of fishes is called fish culture.
Among the following statements choose the option which does not describe the benefit of fish culture?

Which one of the following is a suspension:

Select the method you will use to separate the different constituents of ink:

When we kick a stone, we get hurt. Due to which one of the following properties does it happens?

What is the commercial unit of energy?

The momentum of a bullet of mass 20g fired from a gun is 10kg m/s. The kinetic energy of this bullet in kJ will be:

Which of the following is seperation technique to seperate kerosene oil, water and salt:

Two chemical species X and Y combine together to form a product P which contains both X and Y, X + Y → P X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?

1. P is a compound.
2. X and Y are compounds.
3. X and Y are elements.
4. P has a fixed composition.

Which of the following statement is not correct for an object moving along a straight path in an accelerated motion?