English Medium इयत्ता १० - CBSE Question Bank Solutions for Science

Why is sustainable management of natural resources necessary?

List the parts of the human eye that control the amount of light entering into it. Explain how they perform this function.

Write the function of retina in human eye.

List two reasons for the appearance of variations among the progeny formed by sexual reproduction

List two reasons for the appearance of variations among the progeny formed by sexual reproduction

Write the function of the following part of the human eye: Cornea

Write the function of the following part of the human eye:- iris

Write the function of the following part of the human eye: crystalline lens

Write the function of the following part of the human eye: ciliary muscles

Why should a magnesium ribbon be cleaned before it is burnt in air?

What is a balanced chemical equation? Why should a chemical equation be balanced?

Balance the chemical equation.

\[\ce{HNO3 +Ca(OH)2 -> Ca(NO3)2 + H2O}\]

Balance the following chemical equation.

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

Balance the following chemical equation.

\[\ce{NaCl + AgNO3 -> AgCl + NaNO3}\]

Balance the following chemical equation.

\[\ce{BaCl2 + H2SO4 -> BaSO4 + HCl}\]

Translate the following statement into chemical equation and then balance it.

 Hydrogen gas combines with nitrogen to form ammonia

Translate the following statement into chemical equation and then balance it.

Hydrogen sulphide gas burns in the air to give water and sulphur dioxide.

Translate the following statement into chemical equation and then balance it.

Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

Translate the following statement into chemical equation and then balance it.

Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

Write the balanced chemical equation for the following reaction.

\[\ce{Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride}\]