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Science and Technology 2 2017-2018 SSC (Marathi Semi-English) 10th Standard [इयत्ता १० वी] Question Paper Solution

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Science and Technology 2
Marks: 40Academic Year: 2017-2018
Date & Time: 16th March 2018, 11:00 am
Duration: 2h

[10]1
[5]1.A
[2]1.A.i | Rewrite the following statements with suitable words in the blanks :
[1]1.A.i.1

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

Concept: Sex Determination in Humans
Chapter: [0.16] Mapping Our Genes
[1]1.A.i.2

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

Concept: Ethanol
Chapter: [12] Amazing World of Carbon Compounds
[2]1.A.ii | State whether the following statements are true or false
[1]1.A.ii.1

There are two sets of chromosomes in the zygote.

Concept: Sex Determination in Humans
Chapter: [0.16] Mapping Our Genes
[1]1.A.ii.2

All animals and fungi are autotrophs.

Concept: Mode of Nutrition in Plant - Autotrophic Nutrition
Chapter: [0.13] Life's Internal Secrets
[1]1.A.iii

Find the odd one out:

Amoeba, Euglena, Planaria, Paramoecium

 

Concept: Reproduction in Plant
Chapter: [0.15] The Life Cycle
[5]1.B | Rewrite the following statements by selecting the correct options
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[1]1.B.i

Choose the correct alternative and rewrite the following: 

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

is insoluble in water

turns blue litmus red

is pale yellow in colour

none of the above

Concept: Ethanoic Acid
Chapter: [12] Amazing World of Carbon Compounds
[1]1.B.ii

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

(a) Binary fission

(b) Multiple fission

(c) Budding

(d) Fragmentation

Concept: Reproduction in Plant - Modes of Reproduction Used by Single Organisms - Budding
Chapter: [0.15] The Life Cycle
[1]1.B.iii

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

(a) Green

(b) Colourless

(c) Pink

(d) Blue

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

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

(a) Combination

(b) Displacement

(c) Double displacement

(d) Decomposition

Concept: Chemical Properties of Metals: Reactivity Series
Chapter: [11] Understanding Metals and Non-Metals
[1]1.B.v

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

Concept: Concept of Transportation
Chapter: [0.13] Life's Internal Secrets
[10]2 | Answer the following questions (any five)
[2]2.A

Name four plant hormones.

Concept: Coordination in Plants - Immediate Response to Stimulus
Chapter: [0.14] The Regulators of Life
[2]2.B

Why are metals used for making cooking vessels?

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
[2]2.C

Suggest control measures of noise pollution

Concept: Use of Efficient and Eco-friendly Technology
Chapter: [0.17] Striving for Better Environment 2
[2]2.D

Answer the following question.
What are alloys?

Concept: Corrosion of Metals and Its Prevention
Chapter: [11] Understanding Metals and Non-Metals
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[2]2.E

Classify the following as voluntary actions and involuntary actions:

Sneezing, throwing ball, heartbeats, writing

Concept: Central Nervous System (CNS)
Chapter: [0.14] The Regulators of Life
[2]2.F

Name any four life processes in living things.

Concept: Nutrition - Nutrition in Human Beings
Chapter: [0.13] Life's Internal Secrets
[15]3 | Answer the following questions (any five)
[3]3.A

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

Concept: Sustainable Use of Resources
Chapter: [0.17] Striving for Better Environment 2
[3]3.B

Human tailbone is a vestigial organ. Explain.

Concept: Evidence of Evolution
Chapter: [0.01] Heredity and Evolution [0.16] Mapping Our Genes
[3]3.C

What is anodising? Give its applications.

Concept: Corrosion of Metals and Its Prevention
Chapter: [11] Understanding Metals and Non-Metals
[3]3.D

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

Concept: Chemical Control
Chapter: [0.14] The Regulators of Life
[3]3.E

State the different types of neurons.

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

Explain sex determination in human beings.

Concept: Sex Determination in Humans
Chapter: [0.16] Mapping Our Genes
[5]4 | Answer any one of the following questions
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[5]4.A

What are covalent compounds?

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

Write any three features and give two examples of covalent compounds

Concept: Bonding in Carbon - Covalent Bond
Chapter: [12] Amazing World of Carbon Compounds
[5]4.B

Draw the well-labelled diagram of the human excretory system

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

Write the functions of Kidney

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

Write the functions of Ureter

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

Write the functions of the Urinary bladder

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

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