Magnetic Effects of Electric Current — Science STD 10 — Question

State one use of concave mirror based on the formation of image as in case (z) above.

Write chemical equation for the following events: Zinc oxide is dissolved in dilute hydrochloric acid.

When a liquid is getting converted into solid, the latent heat is……….  (Practical Activity Sheet – 1 and 2)

What is the atomic number of this element?

The family of metals having valency one.

When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?

To which group in the periodic table does the element carbon belongs? Write down the electronic configuration of carbon and deduce the valency of carbon.

Which defect of vision can be rectified:
By using a concave lens?

What is the function of enzymes in the human digestive system?

State whether magnesium chloride will conduct electricity or not. Give reason for your answer.