Chhattisgarh Board Class 10 Science Exam Question paper

[Rohit Barla]

Can you give me question paper for Chhattisgarh Board Class 10 Science Examination ?

Here I am giving you question paper for Chhattisgarh Board Class 10 Science Examination .

Write any two main Causes of water pollution.
What do you understand by Exothermie Reacteous ? Explain with one
example.
Explain Nuclear fusion with chemical reactions.
Write any two main advantages of wind energy.
Write laws of Reflecties.
What is Green House Effect ?
iz’u 7& HkkSfrd xq.kksa ds vk/kkj ij /kkrq ,oa v/kkrq esa rhu varj fyf[k;sA
Write three differences between metal and non-metal on the basis of
physical properties.
Calculate the value of resultant resistance on the basis of attached
resistance in this diagrame.
How PVC is prepared ? Explain with chemical equations. Write any two
uses of PVC.
How will you obtain Plaster of Paris ? Explain with chemical equations.
Write any two main uses of it.

The PH value of solution A and B are respectively 4 and 12. which solution
is acidic and which is alkaline.

Write two limitations of wind energy.

Write two main aims of CREDA.

How much current flows through a conductor wire of resistance 25 Ohm
when connected across a source of potential difference of 20 volts?

Write two hazardness of ultraviolet rays.

What is ecosystem ?

What do you mean by a reversible reaction ? Write any two characterestics
of this reaction.

Write the name of any three alloys with their constituent ? also write one
use for each.

(i) Hcl (ii) H2S (iii) NH3
Write the chemical reaction of the following with oxygen:-
(i) Hcl (ii) H2S (iii) NH3

In the following conditions which mirror will be used if
(i) The image is real and small.
(ii) The image is virtual and large.
(iii) The image is virtual and small.

Write any three dissimilarities between Human eye and Camera.

OR
What is total internal reflection. Write its conditions.

Write any three differences between photosynthesis and respiration.
OR
Write any three differences between aerobic and un-aerobic respiration.

Explain the Lab-method of preperation of Hydrogen in following points-
(1) Labelled diagram (2) Chemical equation

(a) Why is a metallic piece heated, when cathod rayas strike against it
(b) Write two properties of X-Rays.

What are plant Harmons ? Write the name of any two plant Harmons
with their uses.

Explain the process of blood clotting ?
OR
66
Write name of excretory organs of following animals.
(1) Human (2) Earth worm (3) Insect (4) Ameoba

Explain manufacture of cement under the following heads:-
(1) Raw material (2) The process
OR
Explain manufacture of glass under the following heads:-
(1) Raw material (2) Chemical Reaction

(a) Why the magnetic lines of force do not intersect each other.
(b) What are magnetic keepers ? How they are formed ? explain.

Explain female reproductive system with the help of diagram.

Explain the process of closing and opening of stometa with labelled
diagram.
OR
Explain in brief the different steps of nutrition process in animals.

In the process of obtaining Alcohal from molasses describe various steps
along with the chemical equations
OR
Give the difference between the following-
(1) Soap and detergent.
(2) Polyethylene and polyvinyl chloride.

Explain the determination of refractive index of glass (as rectangular slab)
on the basis of following points-
(1) Labelled diagram (2) Principle & formula
(3) Two main precautions
OR
Describe the construction of lead accumulator with diagram.