SSC (Marathi Semi-English) इयत्ता १० वी - Maharashtra State Board Important Questions for Science and Technology 1

We can see the sun even when it is little below the horizon because of ______.

Explain how the formation of a rainbow occurs.

Given below is a diagram showing a defect of human eye. Study it and answer the following questions.

(i) Name the defect shown in the figure.
(ii) Give reason for this defect of eye in human being.
(iii) Name the type of lens used to correct the eye defect.

Observe the given figure of reactivity series of metals and answer the following questions:

                    Reactivity series of metals

1. Name two metals which react with water.
2. Name two moderately reactive metals.
3. Name the most highly reactive metal and the most less reactive metal.

Observe the following figure and write the answer of the question.

1. Which process is shown in the figure?
2. Explain the chemical reaction shown in the figure.
3. Write the reactions on anode and cathode.

Explain the following term:

Metallurgy

Non-metal that is a good conductor of electricity:

Define ‘redox reaction’. Give one example.

Write names of first four homologous series of alcohols.

Why are geostationary satellites not useful for studies of polar regions?

State the importance of Space Missions.

State the modern periodic law.

Define ‘redox reaction’. Give one example.

• Complete the given chemical reaction:
  \[\ce{CuSO4_{(aq)} + Fe_{(s)} ->}\] _______ + _______
• Name the type of the reaction.

The chemical reaction in which two or more products are formed from a single reactant is called ______ reaction.

Give a scientific reason:

For electric power transmission, copper or aluminium wire is used.

Identify the figure and give its use.

Identify the figure and give its use.

The device used for producing electric current is called _________.

Write any three properties of magnetic lines of force.