Download NIOS 10th Class April 2015 212 Science Question Paper

Download NIOS (National Institute of Open Schooling) Class 10 (Secondary) April 2015 212 Science Question Paper

This post was last modified on 22 January 2020

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NIOS 10th Class (Secondary) Last 10 Years 2010-2020 Previous Question Papers || National Institute of Open Schooling

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This question paper consists of 12 pages, including 30 questions.

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? ?-? ? 12 ? ? ?, ? 30 ? ? ?

Roll No. ?	Code No. / ? ?. (212) SET/? A
Day and Date of Examination (? ? ? ? ?)
Signature of Invigilators (? ? ?)	1.
	2.

General Instructions :

Candidate must write his/her Roll Number on the first page of the Question Paper.
Please check the Question Paper to verify that the total pages and total number of questions contained in the Question Paper are the same as those printed on the top of the first page. Also check to see that the questions are in sequential order.
For the objective type of questions, you have to choose any one of the four alternatives given in the question i.e. (A), (B), (C) or (D) and indicate your correct answer in the answer-book given to you.

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All the questions including objective type questions are to be answered within the allotted time and no separate time limit is fixed for answering objective type questions.
Making any identification mark in the answer-book or writing roll number anywhere other than the specified places will lead to disqualification of the candidate.
Write your Question Paper Code No. 50/HIS/2, Set A on the answer-book.
(a) The Question Paper is in English/Hindi medium only. However, if you wish, you can answer in any one of the languages listed below : English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugu, Marathi, Oriya, Gujarati, Konkani, Manipuri, Assamese, Nepali, Kashmiri, Sanskrit and Sindhi. You are required to indicate the language you have chosen to answer in the box provided in the answer-book. (b) If you choose to write the answer in the language other than Hindi and English, the responsibility for any errors/mistakes in understanding the question will be yours only.

? ? :

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? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? (A), (B), (C) ? (D) ? ? ? ? ? ? ? ? ? ? ?-? ? ? ? ? ? ?
? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
?-? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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? ?-? ? ? ? ? ? 50/HIS/2, ? A ? ?
(?) ? ? ?/? ? ? ? ? ?, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? : ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ? ? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (?) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? / ? ? ? ? ? ? ?

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SCIENCE AND TECHNOLOGY (? ? ?) (212)

Time: 2½ Hours ] [ Maximum Marks : 85

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? : 2½ ? ] [ ? : 85

Note: (1) All questions are compulsory.
(2) Marks are given against each question.

? : (1) ? ? ? ? ?
(2) ? ? ? ? ? ? ? ? ? ?

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The derived SI unit of work is 1
1. kg m s^-1
2. kg m s^-2
3. kg m² s^-2
4. kg m^-2 s^-2
? ? ? SI ? ?
1. kg m s^-1
2. kg m s^-2
3. kg m² s^-2
4. kg m^-2 s^-2
A Fahrenheit and a Celsius thermometers are dipped in a hot liquid. The Celsius thermometer reads 80 °C. The temperature registered by Fahrenheit thermometer will be 1
1. 48 °F
2. 112 °F
3. 176 °F
4. 353 °F
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 80 °C ? ? ? ? ? ? ? ? ? ?
1. 48 °F
2. 112 °F
3. 176 °F
4. 353 °F
8.0 × 10^–15 m can be expressed as 1
1. 8.0 am
2. 8.0 fm
3. 8.0 pm
4. 8.0 nm
8.0 × 10^-15 m ? ? ? ? ? ?
1. 8.0 am ? ? ?
2. 8.0 fm ? ? ?
3. 8.0 pm ? ? ?
4. 8.0 nm ? ? ?
Which of the following is not a homogenous mixture ? 1
1. Brass
2. Air
3. Sharbat
4. Milk
? ? ? ? ? ? ? ? ? ?
1. ?
2. ?
3. ?
4. ?
A particle is moving in a circular path of radius r. The displacement after half a circle would be 1
1. 2 r
2. pr
3. 2pr
4. zero
? ? ? r ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
1. 2 r
2. p?
3. 2pr
4. ?

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In a neuron electrical impulse travels from 1
1. Dendrite ? axon ? axon ending cell body.
2. Cell body ? dendrite ? axon ? axon ending.
3. Dendrite ? cell body ? axon ? axon ending.
4. Axon ending ? axon ? cell body ? dendrite.
? ? ? ? ? ? ? ? ? ? ? ? ?
1. ? ? ? ? ? ? ? ?
2. ? ? ? ? ? ? ? ?
3. ? ? ? ? ? ? ? ?
4. ? ? ? ? ? ? ? ?
Food items cooked or fried in oil or fat are stored for a long time in bags flushed with the gas 1
1. Oxygen
2. Carbon dioxide
3. Hydrogen
4. Nitrogen
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
1. ?
2. ? ?
3. ?
4. ?
Which of the following is not a communicable disease 1
1. Malaria
2. Influenza
3. Diabetes
4. Dengue fever
? ? ? ? ? ? ? ? ? ?
1. ?
2. ? (?)
3. ?
4. ? ?
Auxin or gibberelin are chemicals belonging to a group of 1
1. Weedicide
2. Fertilizer
3. Fungicides
4. Plant Growth Regulator
? ? ? ? ? ? ? ? ? ? ? ? ?
1. ?
2. ?
3. ?
4. ? ? ?
List any two parts of human body which were used by our ancestors for measurement. Why cannot these parts be used for accurate measurement ? 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
How many grams are there in 2
1. 5 moles of oxygen and
2. 10 moles of sodium ?
(molar mass of oxygen = 32 g mol^-¹ and molar mass of sodium = 23 g mol^-1)
1. 5 ? ? ?
2. 10 ? ? ? ? ? ? ? ?
(? ? ? ? = 32 g mol^-1 ? ? ? ? ? = 23 g mol^-1)
Write the formula of the compound which is made up of the following ions : 2
1. Na⁺ and SO₄^2-
2. Pb²⁺ and PO₄^3-
3. Ba²⁺ and SO₄^2-
4. Ca²⁺ and Cl^-
? ? ? ? ? ? ? ? ? ? ? :
1. Na⁺ ? SO₄^2-
2. Pb²⁺ ? PO₄^3-
3. Ba²⁺ ? SO₄^2-
4. Ca²⁺ ? Cl^-
Balance the following chemical equations : 2
1. Al(s) + HCl(aq) ? AlCl₃(aq) + H₂(g)
2. Fe(s) +H₂O (g) ? Fe₃O₄(s) + H₂(g) (Steam)
3. NH₃(g) + O₂(g) ? N2(g) + H2O(g)
4. Cl₂(g) + KBr(aq) ? KCl(aq) + Br₂(aq)
? ? ? ? ? ? :
1. Al(s) + HCl(aq) ? AlCl₃(aq) + H₂(g)
2. Fe(s) +H₂O (g) ? Fe₃O₄(s) + H₂(g) (?)
3. NH₃(g) + O₂(g) ? N₂(g) + H₂O(g)
4. Cl₂(g) + KBr(aq) ? KCl(aq) + Br₂(aq)

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Differentiate between static and kinetic friction. State two factors on which the force of friction depends. 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Explain the role of biodiversity in maintaining harmony in nature. 2 ? ? ? ? ? ? ? ? ? ? ? ? ?
Differentiate between primary and secondary air pollutants. Give one example of each. 2 ? ? ? ? ? ? ? ? ? ? ? ?-? ? ? ?
State the postulates of Bohr's model of atom. What is the maximum number of electrons that can be accommodated in a shell ? Write the electronic configuration of chlorine atom (Atomic Number of chlorine is 17) 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (? ? ? ? 17 ?)
How does a covalent bond form ? Show the formation of nitrogen molecule (N₂). How are melting and boiling points, and electrical conductivity of covalent compounds different from those of ionic compounds ? 4 ? ? ? ? ? ? ? ? (N2) ? ? ? ? ? ? ? ? ? ?, ? ? ? ? ? ? ? ? ? ? ?

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State Newton's law of gravitation. The gravitational force between two objects is F. What will be the value of gravitational force between them, if masses of both objects are doubled and the distance between them is halved? Calculate the magnitude of gravitational force between the Earth and a 1 kg object on its surface. (Mass of the Earth is 6 × 10²⁴ kg and radius of the Earth is 6.4 × 10⁶ m. Take G = 6.7 × 10^-11 Nm² kg^-2) 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? F ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 kg ? ? ? ? ? ? ? ? ? ? (? ? ? 6 × 10²⁴ kg ? ? ? ? ? 6.4 × 10⁶ m ? ? G ? ? 6.7 × 10^-11 Nm² kg^-2 ? ?)
When do we consider a person to be myopic or hypermetropic ? Draw a ray diagram to show a myopic eye. How can myopia be corrected ? Show with the help of a ray diagram. 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Draw a labeled diagram to study the relation between the current flowing through a wire and the potential difference applied across it. Briefly describe how will you perform this experiment. With the help of a graph show the variation of voltage with current. What conclusion can be drawn from this experiment ? 4 ? ? ? ? ? ? ?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
What is a tissue ? Where is meristematic tissue found ? State any four characteristics of meristematic tissue. 4 ? ? ? ? ? (?) ? ? ? ? ? ? ? ? ? ? ? ? ? ?
List the parts of human respiratory system and explain the mechanism of breathing. 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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With the help of a diagram and explain the three major steps in DNA replication. 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
List the steps involved in the extraction of metals of medium reactivity from their sulphide and carbonate ores. Also, write the chemical reactions involved during extraction of the metal. 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
What are hydrocarbons ? Give the structural differences between saturated and unsaturated hydrocarbons. Give two examples of each. 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?-? ? ? ?
What is deforestation ? List four harmful effects of cutting down of forests. Suggest any two measures to control deforestation. 4 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Draw a labeled diagram showing a common household circuit having one bulb, one fan and one plug point. Why is it necessary to connect different appliances in parallel ? Explain the importance of electrical fuse and earthing of electrical appliances. 6 ? ? ? ? ? ? ? ? ? ? ?, ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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State Mendeleef's periodic law. Describe main features of Mendeleef's periodic table. Explain its significance. 6 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
With the help of a labeled diagram show the nitrogen cycle in nature. List the various steps by which nitrogen cycle can be studied. 6 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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This download link is referred from the post: NIOS 10th Class (Secondary) Last 10 Years 2010-2020 Previous Question Papers || National Institute of Open Schooling

This post was last modified on 22 January 2020

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