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

Define periods of modern periodic table.

Define groups of modern periodic table.

Distinguish between Concave lens and Convex lens.

Distinguish between:

Concave lens and Convex Lens

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.

Write the molecular formula of calcium carbonate.

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.

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.