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Science and Technology 2 2016-2017 SSC (Marathi Semi-English) 10th Standard [इयत्ता १० वी] Question Paper Solution

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Science and Technology 2
Marks: 40Academic Year: 2016-2017
Date: July 2017

SECTION B
[10]1
[5]1.A | Answer the following sub - questions:
[2]1.A.a | Fill in the blank and rewrite the completed statements:
[1]1.A.a.i

Fill in the blank and rewrite the completed statement:
____________ artery takes the blood to the lungs for oxygenation.

Concept: Concept of Transportation
Chapter: [13] Life's Internal Secrets
[1]1.A.a.ii

Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.

Concept: Bonding in Carbon - Covalent Bond
Chapter: [12] Amazing World of Carbon Compounds
[2]1.A.b | State whether the following statements are true or false:
[1]1.A.b.i

State whether the following statement is true or false:
The dominant character masks the recessive character.

True

False

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [16] Mapping Our Genes
[1]1.A.b.ii

State whether the following statement is true or false: 
E-waste cannot be recycled.

True

False

Concept: Enforcement of Acts, Laws and Policies
Chapter: [17] Striving for Better Environment 2
[1]1.A.c

Name the following: 
An Alloy of copper and Zinc.

Concept: Types of Elements: Non-metal
Chapter: [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals
[5]1.B | Rewrite the following statement by selecting the correct options.
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[1]1.B.a

Rewrite the following statement by selecting the correct option.
For photosynthesis ______________ substance is not essential.

Carbon dioxide

Chlorophyll

Light

Oxygen

Concept: Coordination in Plants - Movement Due to Growth
Chapter: [14] The Regulators of Life
[1]1.B.b

Rewrite the following statement by selecting the correct option.
When Hydra becomes matured, _________ takes place in it.

Budding

Regeneration

Fragmentation

Binary Fission

Concept: Reproduction in Plant - Modes of Reproduction Used by Single Organisms - Budding
Chapter: [15] The Life Cycle
[1]1.B.c

Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.

Green

Colourless

Blue

Pink

Concept: Chemical Properties of Metals: When Metals React with Water
Chapter: [11] Understanding Metals and Non-Metals
[1]1.B.d

Rewrite the following statement by selecting the correct option. 
During respiration, ____________ gas is given out.

Oxygen

Hydrogen

Carbon dioxide

Nitrogen

Concept: Concept of Respiration
Chapter: [13] Life's Internal Secrets
[1]1.B.e

Rewrite the following statement by selecting the correct option.
The formula of ethanoic acid is _____________.

HCOOH

C2H5COOH 

CH3COOH 

None of the above

Concept: Properties of Ethanoic Acid
Chapter: [12] Amazing World of Carbon Compounds
[10]2 | Attempt any five of the following.
[2]2.A

Draw the following diagram:
Draw a neat labeled diagram of a neuron.

Concept: Human Nervous System
Chapter: [14] The Regulators of Life
[2]2.B

Answer the following question:
State two functions of MPCB for the prevention of water pollution.

Concept: Enforcement of Acts, Laws and Policies
Chapter: [17] Striving for Better Environment 2
[2]2.C

Differentiate between:
Detergents and Soaps.

Concept: Soaps and Detergents
Chapter: [12] Amazing World of Carbon Compounds
[2]2.D

Answer the following question:
How can we save electrical energy in day to day life?

Concept: Sustainable Use of Resources
Chapter: [17] Striving for Better Environment 2
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[2]2.E

Give Scientific reasons:  
Consuming iodized salt in day to day diet is essential. 

Concept: Nutrition - Nutrition in Human Beings
Chapter: [13] Life's Internal Secrets
[2]2.F

Answer the following question:
What is a chromosome? How many pairs of autosomes are present in human beings?

Concept: The Central Nervous System
Chapter: [14] The Regulators of Life
[15]3 | Attempt any five of the following questions:
[3]3.A

Answer the following question:
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is metal or a non - metal. Explain with a proper example. 

Concept: Reaction of Metals with Non-metals
Chapter: [11] Understanding Metals and Non-Metals
[3]3.B

Answer the following question:
Why does menstruation occur?

Concept: Sexual Reproduction in Animals
Chapter: [3] Life Processes in Living Organisms Part - 2 [15] The Life Cycle
[3]3.C

Define the functional group and complete the following table. 

S.I. No. Functional Group Compound Formula
(1) ______________ _______________

C2H5OH

(2) _______________ _______________ CH3CHO
Concept: Bonding in Carbon - Covalent Bond
Chapter: [12] Amazing World of Carbon Compounds
[3]3.D

Name one metal each occurring as :  
A sulphine

Concept: Refining of Metals
Chapter: [11] Understanding Metals and Non-Metals

Name one metal each occurring as :
A carbonate

Concept: Refining of Metals
Chapter: [11] Understanding Metals and Non-Metals

Name one metal each occurring as :  
An oxide

Concept: Refining of Metals
Chapter: [11] Understanding Metals and Non-Metals
[3]3.E

Answer the following question:
What is a reflex action? Explain it with two examples. 

Concept: Human Nervous System
Chapter: [14] The Regulators of Life
[3]3.F

Answer the following question:
Why are family planning measures needed in our country?

Concept: Human Reproductive System
Chapter: [3] Life Processes in Living Organisms Part - 2 [15] The Life Cycle
[5]4 | Attempt any one of the following:
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[5]4.A

Answer the following question:
Explain the human excretory system with the help of a suitable diagram.

Concept: Excretion: Substances to Be Eliminated
Chapter: [13] Life's Internal Secrets
[5]4.B

Answer the following question:
How is sex determined in human beings? Explain with the help of a diagram. 

Concept: Sex Determination in Humans
Chapter: [16] Mapping Our Genes
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