SSC (Marathi Semi-English) 10th Standard Board Exam [इयत्ता १० वी] - Maharashtra State Board Important Questions for Science and Technology 1

Study the following chemical reaction and answer the questions given below:

\[\ce{AgNO3_{(aq)} + NaCl_{(aq)} -> \underset{(Precipitate)}{AgCl_{(s)}}↓ + NaNO3_{(aq)}}\]

1. Identify and write the type of chemical reaction.
2. Write the definition of the above type of chemical reaction.
3. Write the names of the reactants and products of the above reaction.

Choose the correct alternative and rewrite the following sentence.

Which of the following is not required to find the pH of a given solution? 

The chemical reactions in which heat is liberated are called endothermic reactions.

Answer the following question:

Grills of doors and windows are always painted before they are used? Give reason.

Grills of doors and windows are always painted before they are used.

 Answer the following:

What is corrosion? Do gold ornaments corrode? Justify.  

If sodium chloride is added to the silver nitrate solution:

a. which precipitate is formed?
b. name the type of reaction.
c. write the chemical equation.

Considering the relationship in the first pair, complete the second paie :

AgCI : White :: CuI₂ : ___________

Define: Endothermic reaction 

Answer the following question:
How do acids and bases react with each other? What is the name of the process? What product is obtained from these reactions?

Explain the reaction given in the figure.

Identify the type of chemical reaction given below:

\[\ce{CuSO4 + Fe -> FeSO4 + Cu}\]

Identify the type of chemical reaction given below:

\[\ce{2Mg + O2 -> 2MgO}\]

In a double displacement reaction ______.

Complete the following chemical reaction:

\[\ce{CuSO4 (aq) + Pb (s) -> \underline{}\underline{}\underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}\underline{}\underline{}}\]

Name the chemical reaction type.

Complete the given chemical equation:

\[\ce{Zn(s) + CuSO4(aq) -> \underline{}\underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}\underline{}}\]

Name the type of reaction.

It is recommended to use air tight containers for storing oil for a long time.

Complete the following reaction:

\[\ce{C_12H_22O11->[Heat]}\] ______ + ______.