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

Distinguish between:

Concave lens and Convex Lens

Distinguish between:

Concave lens and Convex lens

Distinguish between Concave lens and Convex Lens.

Distinguish between:

Concave lens and Convex lens

Distinguish between:

Concave lens and Convex lens

Reaction of iron nails with copper sulphate solution is an example of
(a) Combination reaction
(b) Decomposition reaction
(c) Displacement reaction
(d) Double displacement reaction

State four most common electrical appliances based on heating effect of electric current. Why do we use finely heated platinum wire in surgery?

CuSO_4(aq) + Zn_(s) → ZnSO_4(aq) + Cu_(s) is an example of a decomposition reaction.

The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is

1. Cu₂O
2. Cu
3. CuO
4. CuS

After you have dinner tonight, wash your own plates with soap/detergent.

1. What colour change is observed when soap/detergent is applied?
2. Name the type of reaction and explain it.

The device used for producing electric current is called a ______.

Write the answer of the question with reference to laws of gravitation.

State the universal law of gravitation.

Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?

Explain the terms with examples.

Displacement reaction

Explain the construction and working of the following. Draw a neat diagram and label it.

Electric Generator (AC)

Explain the difference:
AC generator and DC generator.

Give a scientific reason.

Tungsten metal is used to make a solenoid type coil in an electric bulb.

Write the name from the description.

The period with electrons in the shells K, L, and M.

Give Scientific reason
In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster etc, an alloy such as Nichrome is used, not pure metals.