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Maharashtra State BoardSSC (English Medium) 10th Standard

Science and Technology 2 2012-2013 SSC (English Medium) 10th Standard Question Paper Solution

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Science and Technology 2
Marks: 30 Maharashtra State Board
SSC (English Medium)
SSC (Marathi Semi-English)

Academic Year: 2012-2013
Date: मार्च 2013
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[7]1
[2]1.1 | Fill in the blanks:
[1]1.1.1

Dominant character masks the ______________ characters.

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[1]1.1.2

______________ artery takes the blood to the lungs for oxygenation.

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[3]1.2 | State whether the following statements are true or false:
[1]1.2.1

Roots of plants grow towards light

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[1]1.2.2

Hormones secreted by endocrine glands are directly released into blood stream.

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Chapter: [12] The Regulators of Life
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[1]1.2.3

If X chromosome is inherited from mother and Y from father, the offspring will be male.

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[1]1.3

Write structural formula of Methane.

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[1]1.4

Name the following:
Metals which forms an amphoteric oxide.

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[6]2 | Answer the following sub-questions:
[2]2.1

‘A’ is an element having four electrons in its outermost orbit. An allotropes ‘B’ of this element is used as a dry lubricant in machinery and in pencil leads. So:
i. Write the name of element ‘A’ and its allotropes.
ii. State whether ‘B’ is a good conductor or non-conductor of electricity?

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[2]2.2

‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.

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[2]2.3

Write two points of differences between arteries and veins.

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[12]3 | Answer the following questions (any four) :
[3]3.1

Write any three differences between metals and non-metals with respect to their physical properties.

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[3]3.2

Define Saturated hydrocarbon.

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Define Unsaturated hydrocarbon.

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Define Catenation.

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[3]3.3

Write the names and functions of three parts of human nervous system in which it is divided.

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[3]3.4

What is meant by sexual reproduction?

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Name two main processes of sexual reproduction

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[3]3.5

Name any three parts of the female reproductive system in human beings. Write one function of each.

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[5]4 | Write the answer of any one question given below:
[5]4.1

Write names of different parts of human digestive system and explain functions of any three parts.

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Chapter: [11] Life's Internal Secrets
[5]4.2 | Answer the following:

What is the peculiarity of the ‘DNA’ structure?

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Draw a diagram of DNA showing genes.

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Chapter:

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Maharashtra State Board previous year question papers 10th Standard Science and Technology 2 with solutions 2012 - 2013

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