Laws of Motion — Science STD 10 — Question

Removal of carbon dioxide is known as dehydrogenation.

Avogadro’s law determines the relation between molecular mass and absolute density.

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.

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

The rocky impurity associated with the ore is called flux.

Tobacco chewing does not cause oral cancer.

The refractive index of a medium ¡s independent of wavelength.

The molecular formula of gases can be derived using Avogadro’s law.

The chemical reactions which take place with the evolution of heat energy are called endothermic reaction.

Ethanol is a clear liquid with burning taste whereas ethanoic acid is a colourless liquid with a sour taste.