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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 & Time: 20th March 2017, 11:00 am
Duration: 2h

[10]1
[5]1.1 | Answer the following sub-questions :
[2]1.1.1 | Fill in the blanks and rewrite the completed statements.
[1]1.1.1.1

Nervous system is absent in _____________.

Concept: Human Nervous System
Chapter: [0.14] The Regulators of Life
[1]1.1.1.2

Both the parents contribute equal amount of ____________ material to the offspring

Concept: Mendel’s Laws of Inheritance
Chapter: [0.16] Mapping Our Genes
[2]1.1.2 | State whether the following statements are true or false:
[2]1.1.2.1

The general formula of alkanes is CnH2n+2.

Concept: Nomenclature of Carbon Compounds
Chapter: [12] Amazing World of Carbon Compounds
[2]1.1.2.2

Carbohydrates are bodybuilding nutrients.

Concept: The Digestive System in Human
Chapter: [0.13] Life's Internal Secrets
[1]1.1.3

Considering the relationship in the first pair, complete the second pair:

Root : Vegetative propagation : : Flower : ____________

Concept: Nutrition in Plants
Chapter: [0.13] Life's Internal Secrets
[5]1.2 | Rewrite the following statements by selecting the proper options:
[1]1.2.1

The exchange of respiratory gases in the cells of plants occurs by the process of _______________

(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation

Concept: Respiration in Organisms
Chapter: [0.13] Life's Internal Secrets
[1]1.2.2

A solution of _________________ in water is green in colour.

(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3

Concept: Chemical Properties of Metals: Metals React with Solutions of Other Metal Salts
Chapter: [11] Understanding Metals and Non-Metals
[1]1.2.3

..................... type of reproduction occurs in Hydra.

(a) Binary fission

(b) Multiple fission

(c) Budding

(d) Fragmentation

Concept: Asexual Reproduction in Plant
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle [0.15] The Life Cycle [0.15] The Life Cycle [0.15] The Life Cycle [0.15] The Life Cycle [0.15] The Life Cycle [0.15] The Life Cycle
[1]1.2.4

The process of absorption of water into raisins occurs through its membranes. This process is known as ______________.

(a) Absorption
(b) Osmosis
(c) Adsorption
(d) Diffusion

Concept: Nutrition in Plants
Chapter: [0.13] Life's Internal Secrets
[1]1.2.5

When zinc powder is added to acetic acid ______________

(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom

Concept: Ethanoic Acid
Chapter: [12] Amazing World of Carbon Compounds
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[10]2 | Attempt any five of the following:
[2]2.1

Draw the well-labelled diagram of the human excretory system

Concept: Excretion: Substances to Be Eliminated
Chapter: [0.13] Life's Internal Secrets
[2]2.2

Differentiate between Mendel’s monohybrid cross and dihybrid cross.

Concept: Mendel’s Laws of Inheritance
Chapter: [0.16] Mapping Our Genes
[2]2.3

Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.

Concept: Chemical Properties of Metals: When Metals React with Water
Chapter: [11] Understanding Metals and Non-Metals
[2]2.4

What is recycling of waste?

Concept: Sustainable Use of Resources
Chapter: [0.17] Striving for Better Environment 2
[2]2.5

What are vestigial organs?

Concept: Evidence of Evolution
Chapter: [0.01] Heredity and Evolution [0.16] Mapping Our Genes
[2]2.6

Write a short note on Catenation.

Concept: Saturated and Unsaturated Carbon Compounds
Chapter: [12] Amazing World of Carbon Compounds
[15]3 | Attempt any five of the following questions :
[3]3.1

Write the names of the indicated parts 1 to 6 in the following diagram:

Concept: Human Nervous System
Chapter: [0.14] The Regulators of Life
[3]3.2

What is the need to use eco-friendly technology?

Concept: Use of Efficient and Eco-friendly Technology
Chapter: [0.17] Striving for Better Environment 2
[3]3.3
[1]3.3.1

State the IUPAC names of the following compounds :

CH3⎯CH2⎯ CH2⎯OH

Concept: Nomenclature of Carbon Compounds
Chapter: [12] Amazing World of Carbon Compounds
[1]3.3.2

Give the IUPAC names of the following compounds:

HCOOH

Concept: Nomenclature of Carbon Compounds
Chapter: [12] Amazing World of Carbon Compounds
[1]3.3.3

State the IUPAC names of the following compounds :

CH3⎯CH2⎯ CH=CH2

Concept: Nomenclature of Carbon Compounds
Chapter: [12] Amazing World of Carbon Compounds
[3]3.4

What is embryology?

Concept: Paleobotany
Chapter: [0.16] Mapping Our Genes

How does Embryology study lead us to understand evolution?

Concept: Paleobotany
Chapter: [0.16] Mapping Our Genes
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[3]3.5

What are the two types of nerves? Write their functions

Concept: Central Nervous System (CNS)
Chapter: [0.14] The Regulators of Life
[3]3.6

What would be the consequences of a deficiency of haemoglobin in our bodies?

Concept: Respiration
Chapter:
[5]4 | Attempt any one of the following :
[5]4.1 | Answer the following questions with respect to the sexual reproduction in plants:
[1]4.1.1

State the name of the functional unit concerned with sexual reproduction.

Concept: Sexual Reproduction in Flowering Plants
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[1]4.1.2

Name the part made up of the stigma, style and ovary.

Concept: Sexual Reproduction in Flowering Plants
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[1]4.1.3

Name the swollen lower part of the carpel.

Concept: Sexual Reproduction in Flowering Plants
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[1]4.1.4

Name the male part of the flower.

Concept: Sexual Reproduction in Flowering Plants
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[1]4.1.5

Where are the pollen grains produced?

Concept: Sexual Reproduction in Flowering Plants
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[5]4.2
[1]4.2.1

In the extraction of aluminium: Name the process of concentration of bauxite.

Concept: Extraction of Metals
Chapter: [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals
[1]4.2.2

In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.

Concept: Extraction of Metals
Chapter: [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals
[1]4.2.3

In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.

Concept: Extraction of Metals
Chapter: [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals
[1]4.2.4

Write a balanced chemical equation for the action of heat on aluminium hydroxide.

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
[1]4.2.5

In the extraction of aluminium: Why is it necessary to replace anodes time to time?

Concept: Extraction of Metals
Chapter: [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals [11] Understanding Metals and Non-Metals
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Maharashtra State Board previous year question papers 10th Standard [इयत्ता १० वी] Science and Technology 2 with solutions 2016 - 2017

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