SSC (English Medium) १० वीं कक्षा - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Observe the figure and write the answers to the following questions.

1. Write the name of the reaction shown in the following figure.
2. Write the above chemical reaction in the form of a balanced equation.
3. Write the name of the product produced in the above reaction, write a use.
4. Write the name of the catalyst used in the above reaction.

Complete the correlation:

Group 1 : Alkali metals : : ______ : Halogens.

Observe the following diagram and answer the questions given below:

1. Identify the above diagram.    (1)
2. Write the principle on which the above appliance works.   (1)
3. Write the working of the above appliance.   (2)
4. Write the use of the above appliance.   (1)

In the presence of the acid catalyst, ethanoic acid reacts with ethanol and ______ ester is produced.

The reaction between acetic acid and sodium carbonate is shown in the following figure.

Answer the questions with the help of a diagram.

1. Which gas does come out as effervescence in the big test tube?
2. What is the colour change in the lime water present in the small test tube?
3. Write the related reaction.

Ethanoic acid reacts with the basic salt, sodium carbonate, to form a salt, named ______, water and carbon dioxide gas.

Bubbles are seen in the test tube during the preparation of lime water.

Observe the diagram given below and answer the questions:

1. Name the reactants in this reaction.
2. Which gas comes out as effervescence in the bigger test tube?
3. What is the colour change in the lime water?
4. In the above experiment instead of sodium carbonate which chemical can be used to get same products?
5. Write the use of acetic acid.

Write answer as directed.
Give names of three natural polymers. Write the place of their occurance and names of monomers from which they are formed.

Complete the following flow chart. 

Find the odd one out and give its explanation.