SSC (English Medium) १० वीं कक्षा - Maharashtra State Board Question Bank Solutions

Give scientific reason.

It is reccommended to use air tight container for storing oil for long time.

Identify from the reaction the reactants that undergo oxidation and reduction.
Fe + S → FeS

Identify from the following reaction the reactants that undergo oxidation and reduction.

\[\ce{2Ag2O → 4 Ag + O2 \uparrow}\]

Identify from the reaction the reactants that undergo oxidation and reduction.

2Mg + O₂ → 2MgO

Identify from the reaction the reactants that undergo oxidation and reduction.

\[\ce{NiO + H2 -> Ni + H2O}\]

Write the name and symbol of the element from the description.

The atom having the smallest size.

Write the name and symbol of the element from the description.

The atom having the smallest atomic mass.

Write the name and symbol of the element from the description.

The noble gas with the smallest atomic radius.

Give scientific reasons for the following:

Atomic radius goes on decreasing while going from left to right in a period.

Write a scientific reason.

Atomic radius goes on increasing down a group.

Study the radius of the element given below and answer the following questions.

a) Which of the above elements have the smallest atom?
b) In which group of the modern periodic table the above element are belongs?
c) What is the periodic trend observed in the variation of atomic radii down a group?

Observer the following diagram and answer the questions.
a) Which eye defect is shown in this diagram?
b) What are the possible reasons for this eye defect?
c) How this defect is corrected, write it in brief?

Rewrite the following table so as to match second and third column with first column.

Anuja cannot see the blackboard writing but she can see nearby things.
(a) What is the eye defect she is suffering from?
(b) State the possible reason for her defect.
(c) How is it corrected

On moving from left to right in a periodic table, the size of the atom _______.

The size of an atom is indicated by its _______.

_______ is the distance between the nucleus of the atom and its outermost shell.

Atomic radius is expressed in the unit _______.