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

Read the passage and answer the questions based on it.

If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat-resistant box then no energy can flow from inside the box or come into the box. In this situation, we get the following principle.
Heat energy lost by the hot object = Heat energy gained by the cold object. This is called the ‘Principle of heat exchange’.

1. Where does heat transfer take place?
2. In such a situation which principle of heat do you perceive?
3. How can this principle be explained in short?
4. Which property of the substance is measured using this principle?

Complete the following table for convex lens:

In a double displacement reaction ______.

Observe the following diagram and answer the questions.

1. Construction of which equipment does the above diagram show?
2. On which principle does this equipment work?
3. According to which law the coil ABCD rotates?
4. Write the law in your own words.
5. Where is this equipment used?

To study energy exchange between hot and cold objects, the system of both objects is isolated from the environment by keeping them inside ______.

Match the columns:

Add potassium chromate (K₂CrO₄) into the solution of barium sulphate (BaSO₄).

1. What was the colour of the precipitate formed? Also, write the name of the precipitate.
2. Write down the balanced equation for this reaction.
3. Will you call this reaction a displacement reaction or a double displacement reaction? Why?

The specific heat capacity of ______ is maximum.

Find the odd one out:

Observe the given figure of a current-carrying solenoid and write the labels of A and B correctly.

Observe the following diagram and answer the questions given below:

       Specific heat capacity of metals

1. Which element has maximum specific heat capacity? Justify.
2. Which element has minimum specific heat capacity? Justify.
3. Define specific heat of object.

______ is the functional group of carboxylic acid.

Draw a neat diagram of a solenoid and name its various components.

Give scientific reason.

While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.

Fill in the blank:

The modern periodic table consists of ……………. periods.

Fill in the blank:

The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.

Corrosion can be prevented by using ……………. solution.

Calculate the focal length of a corrective lens having power +2D.

Define ‘redox reaction’. Give one example.

The device used for producing electric current is called _________.