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Science and Technology 2 2013-2014 SSC (Marathi Semi-English) 10th Standard [इयत्ता १० वी] Question Paper Solution

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Science and Technology 2
Marks: 40Academic Year: 2013-2014
Date: October 2013

Section B
[10]1
[5]1.A
[3]1.A.a | Fill in the blanks and rewrite the statements:
[1]1.A.a.i

The general formula of Alkane is _________________

Concept: Versatile Nature of Carbon - Homologous Series of Carbon Compound
Chapter: [12] Amazing World of Carbon Compounds
[1]1.A.a.ii

________ is the largest gland in the body.

Concept: Nutrition - Nutrition in Human Beings
Chapter: [13] Life's Internal Secrets
[1]1.A.a.iii

The loss of water from the plants is known as ______

Concept: Nutrition in Plants
Chapter: [13] Life's Internal Secrets
[2]1.A.b | State whether the following statements are True or False:
[1]1.A.b.i

The daughter cells produced by asexual reproduction are genetically identical to the parent cell.

True

False

Concept: Reproduction in Plant
Chapter: [15] The Life Cycle
[1]1.A.b.ii

In the sexual mode of reproduction, greater diversities are generated.

True

False

Concept: Sexual Reproduction in Animals
Chapter: [3] Life Processes in Living Organisms Part - 2 [15] The Life Cycle
[5]1.B | Choose the correct alternative and rewrite the following:
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[1]1.B.a

Ethanoic acid _________.

is odourless

has a pungent smell

has a smell of rotten egg

has a vinegar-like an odour
Concept: Properties of Ethanoic Acid
Chapter: [12] Amazing World of Carbon Compounds
[1]1.B.b

Which of the following is a mode of asexual reproduction?

Fission

Budding

spore formation

All of the above

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

In hydra the type of reproduction is ___________.

Binary fission

Budding

Multiple fission

None of the above

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

Which of the following is not essential for photosynthesis?

Oxygen

Carbon dioxide

Sunlight

Chlorophyll

Concept: Coordination in Plants - Introduction
Chapter: [14] The Regulators of Life
[1]1.B.e

Ankita bought some Glucose Powder. She felt is was adulterated with starch powder. How would she test it?

by sieving

by dissolving it in water

by iodine test

all of the above

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
[10]2 | Answer the following sub questions: (any five)
[2]2.A

Sodium is stored under kerosene. Give reason.

Concept: Properties of Ethanol
Chapter: [12] Amazing World of Carbon Compounds
[2]2.B

What are hydrocarbons? Give one example.

Concept: Properties of Ethanol
Chapter: [12] Amazing World of Carbon Compounds
[2]2.C

Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.

Concept: Nutrition - Autotrophic Nutrition
Chapter: [13] Life's Internal Secrets
[2]2.D
Draw a well-labelled diagram of the ‘Liver’.
Concept: Nutrition - Nutrition in Human Beings
Chapter: [13] Life's Internal Secrets
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[2]2.E

What is pollination? Mention its types.

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

Define Heredity. Give two examples.

Concept: Heredity - Inherited Traits
Chapter: [16] Mapping Our Genes
[15]3 | Answer any five of the following sub-questions:
[3]3.A

Write three methods of preventing rusting of iron.

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

Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.

Concept: Types of Element: Metals - Extracting Metals Towards the Top of the Activity Series
Chapter: [11] Understanding Metals and Non-Metals
[3]3.C

What are the functional groups? Name any two compounds containing functional groups.

Concept: Properties of Ethanol
Chapter: [12] Amazing World of Carbon Compounds
[3]3.D

Classify the following as voluntary and involuntary actions:
(a) Coughing
(b) Food getting digested
(c) Moving a table
(d) Kicking a ball
(e) Beating of heart
(f) Flying a kite

Concept: The Central Nervous System
Chapter: [14] The Regulators of Life
[3]3.E

Explain the two examples, movements in plants that are growth independent.

Concept: Coordination in Plants - Movement Due to Growth
Chapter: [14] The Regulators of Life
[3]3.F

What is meant by vegetative propagation? Name the vegetative parts through which Potato and Bryophyllum reproduce.

Concept: Reproduction in Plant - Modes of Reproduction Used by Multicellular Organisms - Vegetative Propagation
Chapter: [15] The Life Cycle
[5]4 | Write the answer of any one questions given below:
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[5]4.A
(a) How many pairs of autosomes and Paris of sex chromosomes are present in a human being?  
(b) Which chromosomes are present in Females? 
(c) Which chromosomes are present in Male? 
(d) How does sex determination take place in human beings? 
Concept: Sex Determination in Humans
Chapter: [16] Mapping Our Genes
[5]4.B

State the powders of Maharashtra Pollution Control Board (MPCB) to control the Air Pollution.

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