RBSE Class 10 Science Sample Paper2

RBSE Class 10 Science Sample Paper 1 English Medium

Here we have given  Class 10 R.B.S.E BOARD Science Paper of year 2018 for English Medium Students.

RBSE Class 10 Science Sample Paper 2 English Medium

Time: 3.¼ Hours
Maxim Marks: 80

1. Candidate must write first his/her Roll on the question paper compulsory.
2. All the questions are compulsory.
3. Write the answer to each question in the given answer-book only.
4. For question having more than one part, the answers to those parts are to be written together in continuity.
5. If there is any error/difference/contradiction in Hindi & English versions of the question paper, the question of Hindi versions should be treated valid.

6. Part	Question Nos.	Marks per Question
   A	1 – 11	1
   B	12 – 21	3
   C	22 – 27	4
   D	28 – 30	5

7. There are internal choices in Q. No. 27 and Q.No 30.

Part – A

Question 1.
Deficiency of which vitamin causes the bending of the Leones of legs and the knees coming closer? [1]

Question 2.
Write the sexual hormones of woman. (Two Hormones) [1]

Question 3.
Write the general formula of alkene series. [1]

Question 4.
Write the species of the monkey in which Rh factor was discovered? [1]

Question 5.
Draw symbolic sign of electric cell and rheostate. [1]

Question 6.
Write the unit of work when force is in newton and displacement in meter? [1]

Question 7.
Write two names of renewable resources. [1]

Question 8.
What kind of examples of immunity are the vaccinations of Diphtheria and Titenas? [1]

Question 9.
Write the blood group of a person whose genotype is ii. [1]

Question 10.
Write two names of products of culture. [1]

Question 11.
Write definition of “Biodiversity”. [1]

Part – B

Question 12.
Explain the harmful effects of use of tobacco, alcohol and opium on human health giving two examples each. [3]

Question 13.
Write one chemical equation for each showing addition, replacement and dissociation reaction. [3]

Question 14.
Write I.U.P.A.C names of the following. [3]

Question 15.
(a) How does the shift farming (Jhoom) encourage deforestation? [3]
(b) Write the name of the book containing the collection of the species on the verge of extinction.

Question 16.
What steps would you take for the waste management in your village/colony, (any three)? [3]

Question 17.
What are dispersive powers? Describe any two internal dispersive power. [3]

Question 18.
Describe Big Bang theory of the generation of universe. [3]

Question 19.

1. How many satellites were launched by India at the same time in June 2016? [3]
2. What is an alien?
3. Write the name of the space agency of India.

Question 20.
Match the followings : [3]

1. Father of plastic surgery (A) Homi Jahangir Bhabha
2. Birdman of India (B) Sushrut
3. Father of Indian Atomic Science (C) Dr. Salim Ali

Question 21.

1. By law how much amount of alcohol is permissible in 100 ml blood.
2. Why is yellow colored paper or tap stick on headlights?
3. What kind of electric current flows in vehicle’s batteries? [3]

Part – C

Question 22.
(i) Why did Mendel select peas plant for his experiment? Explain. [4]
(ii) Explain one low of heredity obtained from the result on monohybrid cross of a tall homozygous (T T) with dwarf one (tt).

Question 23.
(A) Explain pH scale by a diagram. [4]
(B)

1. Why is there skin burning sensation on being stung by insects
2. Why are weak bases used for relief on increase in acidity in stomach.

Question 24.
Calculate equivalent resistance between A and B in the following circuits. [4]

Question 25.
Suresh and Ramesh climb on a hill which is 15 m high Ramesh and Suresh have same weight of 38 Kg Ramesh reaches at top of the hill in 19 sec.
Where as Suresh reaches in 15 sec. Calculate the power used by them separately in climbing. [4]

Question 26.
Write common and botanical names of any four medicinal plants. [4]

Question 27.
Interpret any four reasons for degradation of Bio-diversity. [4]

OR

Explain two effects taken at International and National level each to save disbursed species.

Part – D

Question 28.

1. Draw a labeled Diagram of Digestive System.
2. Write the name & function of enzymes present in fabric juice
3. In which part of digestive system maximum digestion and absorption takes place? [5]

OR

1. Draw a labeled Diagram of excretory system.
2. Explain the process of urine formation in humans.
3. Write two excretory products which are excreted by skin.

Question 29.

1. Write merits and demerits three each in periodic table given by Mendeleev.
2. Arrange the elements in ascending order of their Atomic Radius. F, C, Li, Be [5]

OR

(A)

1. Write there postulates of Rutherford’s Atomic model.
2. Why Rutherford’s Atomic model is know as “Model of Solar System.”
3. Give two short-comings of Rutherford Atomic Model.

(B) Arrange the elements in ascending order of their metallic property.

Question 30.

1. Draw a labeled Diagram of human eye.
2. Write reasons and remedies for Myopia, Hypermetropia, and Presbyopia. [5]

OR

1. Draw a ray Diagram which shows location of image when an object is placed between radius of curvature and focus.
2. Define Refraction of light.
3. Write laws of Refraction.

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