Solutions — Science STD 10 — Question

If a motion depends on force then it is called as natural motion.

40 g of sodium chloride in 100 g of water at 25°C forms an unsaturated solution.

The atomic size of the elements in a period increases from left to right.

Isobars are the atoms of the different elements with the same atomic number and different mass numbers.

In refraction incident ray, refracted ray and normal lie in the same plane.

Bond breaking releaser energy whereas bond formation absorbs energy.

The physical and chemical properties of elements are the periodic function of their atomic numbers – modern periodic law.

Torque is a scalar quantity.

According to Rayleigh’s scattering law, red colour is scattered to a greater extent than blue colour.

When an object is placed at finite distance from the concave lens a virtual image is formed between optical centre and focus of the concave lens.