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Question Paper Solutions for Science and Technology - 2 2017-2018 SSC (Marathi Semi-English) 10th

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Science and Technology - 2
2017-2018 March
Marks: 40

[10]1
[5]1.1
[2]1.1.1 | Rewrite the following statements with suitable words in the blanks :
[1]1.1.1.1

There are ................ pairs of chromosomes in the human being.

Chapter: [16] Mapping Our Genes
Concept: Sex Determination - Sex Determination in Humans
[1]1.1.1.2

............ is a functional group of the alcohol.

Chapter: [12] Amazing World of Carbon Compounds
Concept: Important Carbon Compounds - Ethanol
[2]1.1.2 | State whether the following statements are true or false
[1]1.1.2.1

There are two sets of chromosomes in the zygote.

Chapter: [16] Mapping Our Genes
Concept: Sex Determination - Sex Determination in Humans
[1]1.1.2.2

All animals and fungi are autotrophs.

Chapter: [13] Life's Internal Secrets
Concept: Nutrition - Autotrophic Nutrition
[1]1.1.3

Find the odd one out:

Amoeba, Euglena, Planaria, Paramoecium

 

Chapter: [15] The Life Cycle
Concept: Reproduction - Introduction
[5]1.2 | Rewrite the following statements by selecting the correct options
[1]1.2.1

Acetic acid ..................

(a) is insoluble in water

(b) turns blue litmus red

(c) is pale yellow in colour

(d) none of the above

Chapter: [12] Amazing World of Carbon Compounds
Concept: Important Carbon Compounds - Ethanoic Acid (Acetic acid)
[1]1.2.2

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

(a) Binary fission

(b) Multiple fission

(c) Budding

(d) Fragmentation

Chapter: [15] The Life Cycle
Concept: Reproduction - Modes of Reproduction Used by Single Organisms - Budding
[1]1.2.3

The solution of Aluminium sulphate in water is .....................

(a) Green

(b) Colourless

(c) Pink

(d) Blue

Chapter: [11] Understanding Metals and Non-Metals
Concept: Metals and Nonmetals - Chemical Properties of Metals - When Metals React with Water
[1]1.2.4

The reaction of an iron nail with copper sulphate solution is ........... reaction.

(a) Combination

(b) Displacement

(c) Double displacement

(d) Decomposition

Chapter: [11] Understanding Metals and Non-Metals
Concept: Metals and Nonmetals - Chemical Properties of Metals - Reactivity Series
[1]1.2.5

The loss of water in the form of water vapour through stomata on leaves is known as ................

(a) Distillation

(b) Diffusion

(c) Osmosis

(d) Transpiration

Chapter: [13] Life's Internal Secrets
Concept: Concept of Transportation
[10]2 | Answer the following questions (any five)
[2]2.1

Name four plant hormones.

Chapter: [14] The Regulators of Life
Concept: Coordination in Plants - Immediate Response to Stimulus
[2]2.2

Why are metals used for making cooking vessels?

Chapter: [11] Understanding Metals and Non-Metals
Concept: Metals and Nonmetals - Physical Properties - Metal
[2]2.3

Suggest control measures of noise pollution

Chapter: [17] Striving for Better Environment 2
Concept: Use of Efficient and Eco-friendly Technology
[2]2.4

What are alloys?

Chapter: [11] Understanding Metals and Non-Metals
Concept: Corrosion and Its Prevention
[2]2.5

Classify the following as voluntary actions and involuntary actions:

Sneezing, throwing ball, heartbeats, writing

Chapter: [14] The Regulators of Life
Concept: The Central Nervous System
[2]2.6

Name any four life processes in living things.

Chapter: [13] Life's Internal Secrets
Concept: Nutrition - Nutrition in Human Beings
[15]3 | Answer the following questions (any five)
[3]3.1

Population explosion is the root cause for depletion of natural resources. Explain.

Chapter: [17] Striving for Better Environment 2
Concept: Sustainable Use of Resources
[3]3.2

Human tailbone is a vestigial organ. Explain.

Chapter: [1] Heredity and Evolution
Concept: Evidence of Evolution

Human tailbone is a vestigial organ. Explain.

Chapter: [16] Mapping Our Genes
Concept: Evidence of Evolution
[3]3.3

What is anodising? Give its applications.

Chapter: [11] Understanding Metals and Non-Metals
Concept: Corrosion and Its Prevention
[3]3.4

Write the changes that occur in the age group 11 to 21 years in boys.

Chapter: [14] The Regulators of Life
Concept: Chemical Control
[3]3.5

State the different types of neurons.

Chapter: [14] The Regulators of Life
Concept: Human Nervous System
[3]3.6

Explain sex determination in human beings.

Chapter: [16] Mapping Our Genes
Concept: Sex Determination - Sex Determination in Humans
[5]4 | Answer any one of the following questions
[5]4.1

What are covalent compounds?

Chapter: [12] Amazing World of Carbon Compounds
Concept: Bonding in Carbon - Covalent Bond

Write any three features and give two examples of covalent compounds

Chapter: [12] Amazing World of Carbon Compounds
Concept: Bonding in Carbon - Covalent Bond
[5]4.2

Draw the well-labelled diagram of the human excretory system

Chapter: [13] Life's Internal Secrets
Concept: Concept of Excretion

Write the functions of Kidney

Chapter: [13] Life's Internal Secrets
Concept: Concept of Excretion

Write the functions of Ureter

Chapter: [13] Life's Internal Secrets
Concept: Concept of Excretion

Write the functions of the Urinary bladder

Chapter: [13] Life's Internal Secrets
Concept: Concept of Excretion

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