SSC (Marathi Semi-English) 10th Standard Board Exam [इयत्ता १० वी] - Maharashtra State Board Question Bank Solutions for Science and Technology 1

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.

An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focused image can be obtained? Find the size and the nature of the image.

Which type of mirror is used by a dentist?

Find the odd man out:

Turmeric, Methyl Orange, Rose petals, Beetroot.

What are amphoteric oxides?

Explain the terms with examples.

Balanced equation

Balance the equation stepwise.
H₂S₂O₇(l) + H₂O(l) → H₂SO₄(l)

Balance the equation stepwise.

 SO₂(g) + H₂S(aq) → S(s) + H₂O(l) 

Balance the equation stepwise.

 Ag(s) + HCl(aq) → AgCl ↓+ H₂ ↑ 

Balance the equation stepwise.

NaOH(aq) + H₂SO₄(aq) → Na₂SO₄(aq) + H₂O(l)

Which of the statement given below correctly describes the magnetic field near a long, straight current carrying conductor?

Compare the magnetic field produced by a solenoid with the magnetic field of a bar magnet. Draw neat figures and name various components.