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

Give scientific reasons.

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

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.

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.

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.

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.

Give scientific reason.

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

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.

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

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

Elements in the same group show the same valency. Give scientific reason.

Write the electronic configuration of K and Ne.

Calculate the focal length of a corrective lens having power +2.5 D.

The atomic masses of three elements A, B and C having similar chemical properties are 7, 23 and 39, respectively.

1. Calculate the average atomic mass of elements A and C.
2. Compare the average atomic mass with atomic mass of B.
3. What could the elements A, B and C be?

Classify the following elements into metals, non-metals and metalliods

As, C, Hg, Mg, S, Si

Kavita from 10th is using spectacles. The power of the lenses in her spectacles is –2.5 dioptre. Answer the following questions:

1) Which lenses are used in her spectacles?

2) State the defect of vision Kavita is suffering from.

3) Find the focal length of the lenses used in her spectacles

Differentiate between Normal elements and Transition elements.

Which one of the following does not increase while moving down the group of the periodic table?

Solve the following example.
Doctor has prescribed a lens having power +1.5 D. What will be the focal length of the lens? What is the type of the lens and what must be the defect of vision?

Draw a neat labelled diagram.

Magnetic separation method.