[ Question Bank ] - 2022 — Science STD 10 — Question

Mercury and…………are two metals in the liquid state at room temperature.

Electromagnetic induction was discovered by………..

Translate the following statements into chemical equations and then balance the equations:
Phosphorus burns in oxygen to give phosphorus pentoxide.

State the form, of magnetic field lines around a straight current-carrying conductor.

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.

Choose one term from the following which include all others:
Coal, natural gas, fossil fuels, petroleum.

There is an oil layer on the water surface of river in your area. What will you do?

Two non-metals combine with by the sharing of electrons to form a compound X.
What type of chemical bond is present in X?

Name the various types of chemical reactions.

Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?