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Science and Technology - 2 2015-2016 SSC (Marathi Semi-English) 10th Question Paper Solution

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Science and Technology - 2
2015-2016 March
Marks: 40

[10]1
[5]1.1 | Answer the following sub-questions :
[1]1.1.1

Fill in the blank and rewrite the completed statement: 
.................... is the largest gland in the body.

Concept: Nutrition - Nutrition in Human Beings
Chapter: [13] Life's Internal Secrets
[1]1.1.2

Find the odd one out and write it: vagina, uterus, vas deferens, ovary

Concept: Reproduction in Human Beings
Chapter: [15] The Life Cycle
[1]1.1.3

State whether the statement is true or false:
Aquatic animals breathe at a slower rate than the terrestrial animals.

Concept: Concept of Respiration
Chapter: [13] Life's Internal Secrets
[1]1.1.4

Considering the relationship in the first pair, complete the second pair: 
rr : Homozygous : : Rr : ....................

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [16] Mapping Our Genes
[1]1.1.5

Name the following: Main ore of aluminium.

Concept: Occurrence of Metals - Extracting Metals Towards the Top of the Activity Series
Chapter: [11] Understanding Metals and Non-Metals
[5]1.2 | Rewrite the following statements by selecting the correct options:
[1]1.2.1

.................... liberated when acetic acid reacts with sodium metal.
(a) Hydrogen
(b) Chlorine
(c) Oxygen
(d) Nitrogen

Concept: Metals and Nonmetals - Chemical Properties of Metals - When Metals React with Acids
Chapter: [11] Understanding Metals and Non-Metals
[1]1.2.2

For binary fission, Amoeba required .................... parent cells.
(a) Three
(b) Two
(c) One
(d) Zero

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

A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green

Concept: Metals and Nonmetals - Chemical Properties of Metals - Metals React with Solutions of Other Metal Salts
Chapter: [11] Understanding Metals and Non-Metals
[1]1.2.4

Raisins are formed by drying grapes. The process that takes place during formation of raisins from grapes is .................... .
(a) Absorption
(b) Osmosis
(c) Diffusion
(d) Dehydration

Concept: Concept of Transportation
Chapter: [13] Life's Internal Secrets
[1]1.2.5

Ethanoic acid has a .................... odour.
(a) Rotten eggs
(b) Pungent
(c) Vinegar-like
(d) Mild

Concept: Important Carbon Compounds - Ethanoic Acid (Acetic acid)
Chapter: [12] Amazing World of Carbon Compounds
[10]2 | Attempt any five of the following:
[2]2.1

Differentiate between voluntary and involuntary movements.

Concept: Human Nervous System
Chapter: [14] The Regulators of Life
[2]2.2

What is the peculiarity of the ‘DNA’ structure?

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [16] Mapping Our Genes
[2]2.3

Draw a well-labelled diagram of longitudinal section of a flower.

Concept: Sexual Reproduction in Flowering Plants
Chapter: [3] Life Processes in Living Organisms Part - 2 [15] The Life Cycle
[2]2.4

Give scientific reason : Roots of plants grow away from light

Concept: Coordination in Plants - Introduction
Chapter: [14] The Regulators of Life
[2]2.5

Write any two measures to conserve water.

Concept: Use of Efficient and Eco-friendly Technology
Chapter: [17] Striving for Better Environment 2
[2]2.6

What are fossils?

Concept: Evolution and Classification - Fossils
Chapter: [16] Mapping Our Genes
[15]3 | Attempt any five of the following:
[3]3.1

What is an alloy?

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

Give two examples of alloys with their chemical composition.

Concept: Corrosion and Its Prevention
Chapter: [11] Understanding Metals and Non-Metals
[3]3.2

Explain sex determination in human beings.

Concept: Sex Determination - Sex Determination in Humans
Chapter: [16] Mapping Our Genes
[3]3.3

State the different types of neurons.

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

Explain their neurons function.

Concept: The Central Nervous System
Chapter: [14] The Regulators of Life
[3]3.4

What is ‘3R’ mantra?

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

Write ‘3R’ mantra significance

Concept: Sustainable Use of Resources
Chapter: [17] Striving for Better Environment 2
[3]3.5

Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.

Concept: Metals and Nonmetals - Chemical Properties of Metals - Reactivity Series
Chapter: [11] Understanding Metals and Non-Metals
[3]3.6

Explain the disadvantages of a large family size.

Concept: Sustainable Use of Resources
Chapter: [17] Striving for Better Environment 2
[5]4 | Attempt any one of the following:
[5]4.1

Given below are the end products of different reactions involving glucose.

Write the reaction number in front of the following:
(i) Anaerobic reaction =
(ii) Reaction in the human muscles =
(iii) Aerobic respiration =
(iv) Reaction in the plant cells =
(v) Reaction in the liver

Concept: Concept of Respiration
Chapter: [13] Life's Internal Secrets
[5]4.2

What is a homologous series?

Concept: Versatile Nature of Carbon - Homologous Series
Chapter: [12] Amazing World of Carbon Compounds

State any four characteristics of a homologous series

Concept: Versatile Nature of Carbon - Homologous Series
Chapter: [12] Amazing World of Carbon Compounds

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