SSC (English Medium) 10th Standard - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Solve the following example.

An object kept 60 cm from a lens gives a virtual image 20 cm in front of the lens. What is the focal length of the lens? Is it a converging lens or diverging lens?

Explain the following term with an example.

Functional group

Write answer as directed.
Give any four functional groups containing oxygen as the heteroatom in it. Write name and structural formula of one example each.

Give names of three functional groups containing three different hetero atoms. Write name and structural formula of one example each.

Study the following procedure and answer the questions below:
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note, the depth that each sphere goes into the wax.
i) Which property of substance can be studied with this procedure?
ii) Describe that property in minimum words.
iii) Explain the rule of heat exchange with this property.

Choose and write the correct option.

What is the type of the following reaction?

BaCl₂ + ZnSO₄ →  BaSO₄ + ZnCl₂

At which position will you keep an object in front of convex lens to get a real image smaller than the object? Draw a figure.

Study the following principle and answer the question.
A force is excreted on the current carrying conductor. The direction of this force depends on both the direction of the current and the direction of the magnetic field. This force is maximum when the direction of current is perpendicular to the direction of the magnetic field.
a) By which law we can determine the direction of force excreted on the current carrying conductor.
b) In which electrical equipment this principle is used.
c) Draw a diagram representing construction of this equipment.
d) Write the working of this equipment in brief.

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.

To increase the effective resistance in a circuit, the resistors are connected in _______________ .

Choose the correct alternative and rewrite the following sentence.

If three resistors 2 ohms, 3 ohms and 4 ohms are connected in series, then the effective resistance in the circuit will be _______ ohms.

Choose the correct alternative and rewrite the following:

You are given three equal resistances. In how many combinations can they are arranged?

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.

Fill in the blank and rewrite the completed statement:

Very fine particles mainly scatter ______ light.

When do you say that the resistors are connected in this way? Draw a circuit diagram.

My grandfather uses a bifocal lens in his spectacle. Explain why.

Explain: ‘How is a rainbow formed’?

How much heat energy is necessary to raise the temperature of 5 kg of water from 20°C to 100°C?

Define Hydrocarbons.

In Modern Periodic Table the number of columns and periods are respectively _______ and _______.