CBSE Class 10 - Science - SA1 - Sample Question Paper (2014-15)

Class X (Science) Sample Question Paper SA-I (2014-15)

Sample Q Paper by DPS Chandigarh.

Summative Assessment-I (2014-15)

	Sample Question Paper - Class-X - SCIENCE - TIME : 3 ½ Hrs	Maximum Marks : 90
	Instructions:
	i) The question paper comprises of two sections, A and B. You are to attempt both the sections.
	ii) All questions are compulsory.
	iii) There is no overall choice. However, internal choice has been provided in all the three questions of five marks category. Only one option in such questions is to be attempted.
	iv) All questions of section A and all questions of section B are to be attempted separately.
	v) Questions 1 to 3 in section A are one mark questions. These are to be answered in one word or one sentence.
	vi) Questions 4 to 6 in section A are two marks questions. These are to be answered in about 30 words each.
	vii) Questions 7 to 18 in section A are three marks questions. These are to be answered in about 50 words each.
	viii) Questions 19 to 24 in section A are five marks questions. These are to be answered in about 70 words each.
	ix) Questions 25 to 33 in section B are multiple choice questions based on practical skills. Each question is a one mark question. You are to select one most appropriate response out of the four provided to you. Questions 34 to 36 in section B are two mark question.
	Section A
1.	What are biocatalysts?
2.	Name any one metal which is found in its free state in nature.
3.	Suggest any two reasons which make the large scale usage of nuclear energy prohibitive.
	Name the type of the reaction and product formed when magnesium reacts with air or oxygen.
5.	a) Name the gland which releases thyroxin.
	b) State the function of thyroxin.
6.	State two differences between artery and vein on the basis of a) type of blood it carries b) valves
7.	Differentiate between renewable and non-renewable sources of energy with one example for each.
8.	Resistances of three resistors are given as R1=20Ω, R2 = 40Ω and R3 = 60Ω. Calculate the effective resistance when they are connected in series. Also calculate the current flowing when the combination is connected to a 6V battery.

CBSE Class 10 - Science - CH 8. CONTROL AND COORDINATION

CONTROL AND COORDINATION

MCQs

Q1: The plant hormone which is essential for cell division is:

(a) Auxin
(b) Cytokinin
(c) Ethylene
(d) Gibberellin


Q2: The gap between two neurons is called _____

(a) Synapse
(b) Axon
(c) Synthesise
(d) Dendron


Q3: A potted plant is kept in a room. It starts to bend towards the direction of light. This type of movement is known as

(a) Photographism
(b) Photoperiodism
(c) Phototropism
(d) Photocynism


Q4: Tropic movements are

(a) in response to light
(b) in response to gravity
(c) non-directional
(d) unidirectional

CBSE Class 10 - Science - CH2 - Acids, Bases and Salts (MCQs)

Acids, Bases and Salts

credits:clker.com

MCQs

Q1: The most commonly used indicator in laboratory is
(a) Methyl Orange
(b) Litmus
(c) Phenolphtalein
(d) Universal Indicator

Q2: Which gas is released when a metal reacts with an acid?

(a) Cl₂

(b) O₂
(c) H₂
(d) SO₂


Q3: The strength of acid depends upon

(a) density of the acid
(b) oxygen atoms present
(c) number of hydrogen atoms present in the molecule
(d) concentration of H+ ions furnished by the acid


Q4: Which statement is incorrect?

(a) Acids have pH more than 7
(b) Acids give H⁺ ions in water
(c) Acid conduct electricity in aqueous solution
(d) Acids turn blue litmus red.


Q5: Which of the following substance is antacid?

CBSE Class 10 - Science - Ch6 - Gist on Excretory System (Life Processes)

Gist on Excretory System

(Short Q & A)

A Pair Of Kidneys
(image credits: openclipart)

Q1: Define Excretion.

Answer: Excretion is a biological process by which an organism gets rid of metabolic toxic wastes from its body.

Q2: List the toxic wastes of metabolism.

Answer: These wastes are nitrogenous materials i.e. ammonia, urea and uric acid, carbon dioxide, inorganic salts, excess of water.

Q3: What is Osmoregulation? 

Answer: It is a process that maintains the amount of water and ionic balance in the body.

Q4: Where Urea is formed in mammals?

Answer: Urea is made in the liver via the ornithine cycle by combining the ammonia
made by deamination with carbon dioxide made from respiration

Q5: What are the major excretory products of plants?

CBSE Class 10 - Science - CH13 - Magnetic Effects of Electric Current

Magnetic Effects of Electric Current

Q & A

Morse Telegraph which uses Magnetic effect of Current
image credits: classroomclipart.com

Q1: What is meant by Magnetic effect of Electric current?

Answer: It means that a current flowing in a wire produces a magnetic field around it. In other words, electric current can produce magnetism.


Q2: What is a magnet?

Answer: A magnet is an object which attracts pieces of iron, steel, nickel and cobalt.


Q3: What is a Bar magnet?

Answer: A bar magnet is a long rectangular bar of uniform cross-section which attracts pieces of iron, steel nickel and cobalt.

    ➳ Like poles repel, while unlike poles of magnets attract each other.

Q4: Define Magnetic field:

CBSE Class 10 - Science- KVS - Sample Question Paper-2014

CBSE Class 10 - Science- Sample Question Paper-2014

CBSE Class 10 - Science - Value Based Questions -1 (SA2)

Value Based Questions 

courtesy: openclipart.org

[PERIODIC CLASSIFICATION OF ELEMENTS]

Q1: Priyanka is well maintained and organized. Her notebooks have indices properly filled and are timely checked. She is in good books of the teachers. On the other hand Sakshi is un-organized. Often her homework is incomplete and she has to deal with such situations many a times.

(a) Do you think being organized is helpful in life?
(b) Based on the above said example, how can you relate it to classification of elements?

Answer:
(a)   Keeping things organized and disciplined help in saving time and energy. It makes life simple and easy.

(b) As in our daily life keeping things organized is quite helpful, similarly classifying elements help us study elements behaviour and properties systematically. 


Q2: Mendeleev left some gaps in his periodic table and predicted the discovery of new elements. Even though it was a drawback he boldly presented his table. What values do you learn from Mendeleev's decision?

Class 10 - Biology - How do Organisms Reproduce? (Fill In Blanks)

Class 10 - Biology - How do Organisms Reproduce? 

Cross-section of Flower
credits: clker.com

Fill in the Blanks

[Asexual Reproduction in Plants]

1. The ability of plant cells to give rise to whole plant is called as ____.

2. In Asexual reproduction the gametes are ______ (formed/not formed).

3. In yeasts, ____ is the most common type of asexual reproduction.

4. In grafting, the union occurs through formation of ____ between the two grafts.

5. The process of formation of spores is called ____.

6. Asexual reproduction method in spirogyra is called _______.

7. Orchids and Ornamental Plants are generally reprodued asexually. One of the common vegetative propagation technique used for these plants is _______.

[Sexual Reproduction in Plants]

CBSE Class 10 - Science - March 2014 - Question Paper Design and Sample Questions

CBSE Class 10 - Science - March 2014 - Modified Syllabus, Question Paper Design and Sample Questions

CBSE Class 10 - Science - Ch 11 - The Human Eye and the Colourful World (MCQs)

The Human Eye and the Colourful World

Dispersion of Light
Which light bends the most?
credits:wpclipart

(MCQs)

Q1: By which optical phenomenon, the splitting of white light into seven constituent colours occur?
(a) Refraction
(b) Reflection
(c) Dispersion
(d) Interference


Q2: A human eye can focus on objects at different distances by adjusting the focal length of the eye lens. This phenomenon is due to:

(a) near sightedness
(b) long sightedness
(c) accomodation
(d) persistence of vision


*Q3: Which of the following are the primary colours?
(a) Red, Blue, Yellow
(b) Red, Green, Violet.
(c) Yellow, Green Blue
(d) Red, Green, Blue


Q4(NCERT): The human eye forms the image of an object at its
(a) cornea
(b) iris
(c) pupil
(d) retina

CBSE Class 10 - Science - CH14 - Source Of Energy (MCQs)

Sources of Energy

MCQs

Q1: Green house effect is caused by gases like
(a) Helium
(b) Oxygen
(c) Nitrogen
(d) Carbon dioxide


Q2: A solar water heater cannot be used to get hot water on
(a) a sunny day
(b) a cloudy day
(c) a hot day
(d) a windy day

CBSE Class 10- Science - SA1 Sample Question Paper 2013 by KVS Delhi

Class 10- Science - SA1 Sample Question Paper 2013 by KVS Delhi

CBSE Class 10 - Science - CH3 - Metals and Non-Metals

Metals and Non-Metals

Q & A

Q1: List any five physical properties of metals.

Answer: Physical properties of metals are:

1. Metals are usually hard (exceptions are: sodium and potassium).
2. These are sonorous.
3. These are lustrous.
4. Metals exhibit malleability and ductility.
5. Mostly they are solids (exception is mercury)
6. They exhibit high tensile strength.
7. These have high densities.

Q2: Are metals electronegative or electropositive?

Answer: Metals are electropositive i,e. they form cations by loosing electrons.

Q3: Define Malleability.

Answer: Malleability is the property of a metal, by which it can be beaten into thin sheets.

Q4: Name a metal which can be cut with a knife?

Answer: Sodium

Class 10 - Science - CH13 - Magnetic Effects of Electric Current (MCQs)

Magnetic Effects of Electric Current

Magnetic field in wire loop
credits:openclipart

MCQs


Q1: Inside the magnet the field lines run

(a) From south to north
(b) Away from north pole
(c) From north to south
(d) Away from the south pole


Q2: An electric charge in uniform motion produces:

(a) an electric field only
(b) a magnetic field only
(c) both electric and magnetic fields
(d) no such field at all


Q3: The magnetic field inside the solenoid is

(a) Non uniform
(b)Variable
(c) same at all points
(d) zero

CBSE Class 10 - Science - CH6 - Life Processes (MCQs)

Life Processes

(MCQs)

Q1: Which of the following type has the longest small intestine?

(a) Carnivores
(b) Omnivores
(c) Herbivores
(d) Autotroph


Q2: Villi are present in

(a) pancreas
(b) stomach
(c) small intestine
(d) oesophagus


Q3: Which of the following metal is associated with heamoglobin?

(a) Aluminum
(b) Iron
(c) Potassium
(d) Calcium

CBSE Class 10 - Science - CHEMICAL REACTIONS AND EQUATIONS (MCQs)

CHEMICAL REACTIONS AND EQUATIONS

MCQs

Q1: Which of the following is not a decomposition reaction?

(a) CaCO₃ → CaO + CO₂
(b) H₂ + Cl₂ → 2HCl
(c) H₂CO₃ → H₂O + CO₂
(d) 2KClO₃ → 2KCl + 3O₂

Q2: Which of the following is not an oxidising agent?

(a) Oxygen
(b) Conc. Sulphuric acid
(c) Chlorine
(d) Hydrogen


Q3: The oxidation reaction which produces heat and light is

(a) endothermic
(b) photochemical
(c) combustion
(d) exothermic

CBSE Class 10 - Science - CH6 Life Processes (Photosynthesis)

Photosynthesis

Photosynthesis Process
credits : original chloroplast image taken from Wikipedia

Q & A

Q1: What is photosynthesis?

Answer: The process by which green plants make their own food from carbon dioxide and water in the presence of sunlight and chlorophyll is called photosynthesis.

During this process, oxygen gas is released. This process can be represented as:

    6CO₂   + 12H₂O    ➞    C₆H₁₂O₆   +    6H₂O +    6O₂

The green plants convert the energy of sunlight into chemical energy by making glucose.
The extra glucose formed changes into starch which is stored in leaves.
The Oxygen released comes from the water.

Q2: Define Translocation.

Answer: Transportation of food from photosynthetic parts of the plant to the non-green part of the plant through phloem is known as translocation.


Q3: What are the important events occur during photosynthesis process?

Answer: The following events occur during this process:

1. Absorption of light energy by chlorophyll.
2. Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (Light Reaction)
3. Reduction of carbon dioxide to carbohydrates. (Dark Reaction by Calvin Cycle)

Q4: Mention the conditions for photosynthesis. Also, mention the process involved in each of these steps.

CBSE Class 10 - Science - NTSE (Biology) Quiz - 18

NTSE Biology Quiz-18

Q1: We found heterotropic mode of nutrition in which of the following:
(a) Opuntia
(b) pistia
(c) Vallisneria
(d) Drosera


Q2: Which of the following is an example of insectivorous plant?
(a) Orobanche
(b) Rafflesia
(c) Cuscuta
(d) Drosera


Q3: Insectivorous plants
(a) are heterotropic
(b) can get supplementary protein food
(c) cannot manufacture their food other than carbohydrates
(d) cannot manufacture their own proteins

CBSE Class 10 - CH 12 - Electricity (MCQs)

Electricity

An electric circuit

MCQs

Q1: The SI unit of electric charge is __________

(a) volts (V)
(b) ampere (A)
(c) coulomb (C)
(d) tesla (T)


Q2: By convention, the charge on a glass rod that has been rubbed with silk is called

(a) Positive
(b) Negative
(c) either positive or negative
(d) none of these


Q3: Two charged bodies having equal potential are connected through a conducting wire, in this case

(a) current will flow
(b) current will not flow
(c) cannot say
(d) current will flow if a resistor is also connected.

CBSE Class 10 - SA2- Science (KV) Sample Q Paper - 2012-13

Class 10 -Science Sample Paper (SA2) - 2012-13

Here follows a SA-2 Science Sample Question Paper (Solved) by Kendriya Vidyalaya Sanghatan


☛ See also  blog article for more SA2 - class 10 science papers.