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Question Paper - Science and Technology - 2 2012 - 2013-S.S.C-Board Exam Maharashtra State Board (MSBSHSE)

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SubjectScience and Technology - 2
Year2012 - 2013 (March)

 Topics
 Marks
 Topics
 Marks

Marks: 30
Q: 1[7]
Q: 1.1 | Fill in the blanks:[2]
Q: 1.1.1[1]

Dominant character masks the ______________ characters.

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Q: 1.1.2[1]

______________ artery takes the blood to the lungs for oxygenation.

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

Roots of plants grow towards light

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Q: 1.2.2[1]

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

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Q: 1.2.3[1]

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

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Q: 1.3[1]

Write structural formula of Methane.

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Q: 1.4[1]

Name the following:
Metals which forms an amphoteric oxide.

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

‘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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Q: 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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Q: 2.3[2]

Write two points of differences between arteries and veins.

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

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

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Q: 3.2[3]

Define Saturated hydrocarbon.

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Define Unsaturated hydrocarbon.

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Define Catenation.

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Q: 3.3[3]

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

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Q: 3.4[3]

What is meant by sexual reproduction?

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Name two main processes of sexual reproduction

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Q: 3.5[3]

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

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

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

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Q: 4.2 | Answer the following:[5]

What is the peculiarity of the ‘DNA’ structure?

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Draw a diagram of DNA showing genes.

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