RBSE Class 8 Science Board Paper 2018 English Medium

RBSE Class 8 Science Board Paper 2018 English Medium are part of RBSE Class 8 Science Board Model Papers. Here we have given  Rajasthan RBSE Class 8 Science Board Paper 2018 English Medium.

Board	RBSE
Textbook	SIERT, Rajasthan
Class	Class 8
Subject	Science
Paper Set	Board Paper 2018
Category	RBSE Model Papers

Rajasthan RBSE Class 8 Science Board Paper 2018 English Medium

Time: 2.30 Hours
Maximum Marks: 80

General Instructions to the Examinees

1. Candidates must first write their Roll Nos. on the question paper compulsorily.
2. All the questions are compulsory.
3. Write the answer to each question in the given answer-book only.
4. For questions having more than one part, the answers to those parts are to be written together in continuity.
5. Write the answers of Question Nos. 1 to 6 (multiple choice) by making a table in your answer-book.
6. If there is any error/difference/contradiction in Hindi and English versions of the question paper, the question of Hindi version should be treated valid.

Question 1.
Sodium metal is highly reactive. To prevent its contact from air, in which solution it is stored? [1]
(a) In Water
(b) In Kerosene
(c) In Petrol
(d) In Glycerine

Question 2.
Diploid zygote is formed by the fusion of male and female gamete. This process is called [1]
(a) Fertilization
(b) Budding
(c) Pollination
(d) Spore

Question 3.
World AIDS Day  is celebrated on [1]
(a) 28 February
(b) 5 June
(c) 11 July
(d) 1 December

Question 4.
In which medium the speed of sound is highest [1]
(a) In liquid
(b) In vacuum
(c) In solid
(d) In gas

Question 5.
Which of following is used to extract pieces of magnetic material fallen into eye accidentally. [1]
(a) Electric magnet
(b) Electric cell
(c) Coil
(d) Fuse

Question 6.
Which air pollutant is used in refrigerators and air conditioners. [1]
(a) Hydrogen
(b) Chlorofluro carbon
(c) Oxygen
(d) Carbon dioxide

Question 7.
Write the type of crops on the basis of season. [2]

Question 8.
Write any four examples of traditional sources of irrigation. [2]

Question 9.
Write any two differences between metal and non-metal. [2]

Question 10.
Write any two causes of deforestation. [2]

Question 11.
Draw a diagram of a useful thing made by you from waste small pieces of clothes and waste wollen threads. [2]

Question 12.
Write any four uses of plastics. [4]

Question 13.
Write any four methods of prevention from worm infection. [4]

Question 14.
A sitar takes 2 seconds to complete 300 oscillations then calculate its frequency. [4]

Question 15.
Separate the following examples according to potential and kinetic energy. [4]

Question 16.
Write the uses of following modes of communications. [4]
(a) Radio
(b) Telephone
(c) Television
(d) Fax

Question 17.
Why do we use fuse wire in electric circuit? [4]

Question 18.
Write any four safety measures of thunderstorm. [4]

Question 19.
CNG should be used in vehicles, write any such four measures for air pollution control. [4]

Question 20.
What do you mean by Clean India Campaign? Why should we follow traffic rules? Write any two reasons. [4]

Question 21.
Sonu facing weakness and whiteness of face, he suffers from which disease and what should he eat to prevent the disease? [4]

Question 22.
The sun light is made up of seven colours due to which it is seen white. Do you agree with this statement? Explain on the basis of passing of white light through the prism. [6]

Question 23.
In blood transfusion process match the blood groups of donor and recipient by and write the significance of blood donation. [6]

Donor blood group	Blood group of receiver
	A	B	AB	O
A
B
AB
O

OR
Separate and list out the fruits given below into simple fruit, aggregate fruit and composite fruit. Write two examples of parthenocarpy.

Question 24.
Differentiate between geo-stationary satellite and polar satellite on the basis of orbit motion, distance from earth and its uses. [6]
OR
Make a list of possible cyber crimes by taking into consideration of human future and make outline for its safety measures.

Question 25.
Draw a diagram of various levels of environment protection and explain the Indian perspective for conservation of environment. [6]
OR
Draw a labelled diagram of crystalline allotropes of carbon (diamond an graphite) and write its two uses also.

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