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Question Paper Solutions - Science and Technology - 2 2016 - 2017-S.S.C-10th Maharashtra State Board (MSBSHSE)


Marks: 40
[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 _____________.

Chapter: [4] The Regulators of Life
Concept: Human Nervous System
[1]1.1.1.2

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

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[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.

Chapter: [1.04] Carbon Compounds
Concept: Versatile Nature of Carbon - Nomenclature of Carbon Compounds
[2]1.1.2.2

Carbohydrates are bodybuilding nutrients.

Chapter: [2.01] Life Processes
Concept: Nutrition - Nutrition in Human Beings
[1]1.1.3

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

Root : Vegetative propagation : : Flower : ____________

Chapter: [3] Life's Internal Secrets
Concept: Nutrition in Plants
[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

Chapter: [3] Life's Internal Secrets
Concept: Concept of Respiration
[1]1.2.2

A solution of _________________ in water is green in colour.

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

Chapter: [1.03] Metals and Non Metals
Concept: Metals and Nonmetals - Chemical Properties of Metals - Metals React with Solutions of Other Metal Salts
[1]1.2.3

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

(a) Binary fission

(b) Multiple fission

(c) Budding

(d) Fragmentation

Chapter: [5] The Life Cycle
Concept: Reproduction - Modes of Reproduction Used by Single Organisms - Budding
[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

Chapter: [3] Life's Internal Secrets
Concept: Nutrition in Plants
[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

Chapter: [1.04] Carbon Compounds
Concept: Important Carbon Compounds - Ethanoic Acid (Acetic acid)
[10]2 | Attempt any five of the following:
[2]2.1

Draw the well-labelled diagram of the human excretory system

Chapter: [3] Life's Internal Secrets
Concept: Concept of Excretion
[2]2.2

Differentiate between Mendel’s monohybrid cross and dihybrid cross.

Chapter: [1] Basic Biology
Concept: Genetics: Mendel’s Laws of Inheritance
[2]2.3

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

Chapter: [1.03] Metals and Non Metals
Concept: Metals and Nonmetals - Chemical Properties of Metals - When Metals React with Water
[2]2.4

What is recycling of waste?

Chapter: [8] Striving for better Environment 1
Concept: Sustainable Use of Resources
[2]2.5

What are vestigial organs?

Chapter: [6] Mapping Our Genes
Concept: Evidence of Evolution
[2]2.6

Write a short note on Catenation.

Chapter: [1.04] Carbon Compounds
Concept: Versatile Nature of Carbon - Saturated and Unsaturated 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:

Chapter: [4] The Regulators of Life
Concept: Human Nervous System
[3]3.2

What is the need to use eco-friendly technology?

Chapter: [7] Striving for Better Environment 2
Concept: Use of Efficient and Eco-friendly Technology
[3]3.3
[1]3.3.1

State the IUPAC names of the following compounds :

CH3⎯CH2⎯ CH2⎯OH

Chapter: [1.04] Carbon Compounds
Concept: Versatile Nature of Carbon - Nomenclature of Carbon Compounds
[1]3.3.2

Give the IUPAC names of the following compounds:

HCOOH

Chapter: [1.04] Carbon Compounds
Concept: Versatile Nature of Carbon - Nomenclature of Carbon Compounds
[1]3.3.3

State the IUPAC names of the following compounds :

CH3⎯CH2⎯ CH=CH2

Chapter: [1.04] Carbon Compounds
Concept: Versatile Nature of Carbon - Nomenclature of Carbon Compounds
[3]3.4

What is embryology?

Chapter: [2.04] Heredity and Evolution
Concept: Evolution and Classification - Fossils

How does Embryology study lead us to understand evolution?

Chapter: [2.04] Heredity and Evolution
Concept: Evolution and Classification - Fossils
[3]3.5

What are the two types of nerves? Write their functions

Chapter: [4] The Regulators of Life
Concept: The Central Nervous System
[3]3.6

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

Chapter: [3] Life's Internal Secrets
Concept: Concept of Respiration
[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.

Chapter: [5] The Life Cycle
Concept: Sexual Reproduction in Flowering Plants
[1]4.1.2

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

Chapter: [5] The Life Cycle
Concept: Sexual Reproduction in Flowering Plants
[1]4.1.3

Name the swollen lower part of the carpel.

Chapter: [5] The Life Cycle
Concept: Sexual Reproduction in Flowering Plants
[1]4.1.4

Name the male part of the flower.

Chapter: [5] The Life Cycle
Concept: Sexual Reproduction in Flowering Plants
[1]4.1.5

Where are the pollen grains produced?

Chapter: [5] The Life Cycle
Concept: Sexual Reproduction in Flowering Plants
[5]4.2
[1]4.2.1

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

Chapter: [1] Understanding Metals and Non-Metals
Concept: Occurrence of Metals - Extracting Metals Towards the Top of the Activity Series
[1]4.2.2

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

Chapter: [1] Understanding Metals and Non-Metals
Concept: Occurrence of Metals - Extracting Metals Towards the Top of the Activity Series
[1]4.2.3

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

Chapter: [1] Understanding Metals and Non-Metals
Concept: Occurrence of Metals - Extracting Metals Towards the Top of the Activity Series
[1]4.2.4

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

Chapter: [1] Understanding Metals and Non-Metals
Concept: Metals and Nonmetals - Concept of Metals and Non-metals
[1]4.2.5

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

Chapter: [1] Understanding Metals and Non-Metals
Concept: Occurrence of Metals - Extracting Metals Towards the Top of the Activity Series
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