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

How can overloading be avoided?

What is the use of earthing wire?

Explain the application of heating effect of electric current in an electric bulb with a diagram.

Explain structure of modern periodic table in short.

______ is not a chemical change.

If 220 V potential difference is applied across an electric bulb, a current of 0.45 A flows in the bulb. What must be the power of the bulb?

Tara, after completing her exams, went to her grandmother's house along with her younger brother Rahul. One day, Rahul came home after playing and switched on the fan and air conditioner. At the same time, his grandmother was preparing a milkshake for him using a mixer. Suddenly, they heard a big sound and the electricity of the house got shut down. Tara is called an electrician. He said the main reason for supply to shut down was overloading.

1. What is overloading?
2. Is overloading and short the same? When does short-circuiting take place?
3. How can the effects of overloading be avoided?

Find the odd one out.

Complete the following table based on image formation by convex lens:

1 kWh is equal to ______.

Non-metal that is a good conductor of electricity:

In the electric equipment producing heat like iron, electric heater, boiler, toaster etc., an alloy such as nichrome is used, not pure metals.

Draw the ray diagram of a glass slab having medium A and B for the velocity of light ray V_A and V_B respectively and define Snell's law.

1. If V_B = 1.5 V_A, then which medium is denser?
2. What is the refractive index of A with respect to B?
3. What is the refractive index of B with respect to A?

Define periods of modern periodic table.

Define groups of modern periodic table.

Observe the figure and name the ray AB, ray CD, ray GH.

Select the appropriate options and complete the following paragraph:

(metals, non-metals, metalloids, four, seven, s-block, p-block, d-block, f-block).

On the basis of electronic configuration, elements in the modern periodic table are classified Into ______ blocks. Groups 1 and 2 elements are included in ______ and all these elements are metals. (except Hydrogen). Group 13 to 18 elements are included in ______. This block contains metals, non-metals and metalloids. Group 3 to 12 elements are included in ______ and all the elements are ______ elements shown at the bottom of the periodic table i.e. Lanthanides and Actinides constitute ______ and all these elements are metals.

Draw a ray diagram for concave mirror when the object is between centre of curvature and focus.

Methyl orange is used as an indicator. It shows colour change in acid, base and neutral substance. Tabulate your result as follows:

With the help of an appropriate ray diagram, state the sign conventions for reflection by a spherical mirror.