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Science and Technology 2 2014-2015 SSC (Marathi Semi-English) 10th Standard [इयत्ता १० वी] Question Paper Solution

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Science and Technology 2
Marks: 40Academic Year: 2014-2015
Date: July 2015

Section-B
[10]1
[5]1.A
[2]1.A.a
[1]1.A.a.i

Fill in the blank:

______________ is a greenish coloured poisonous gas.

Concept: Use of Efficient and Eco-friendly Technology
Chapter: [17] Striving for Better Environment 2
[1]1.A.a.ii

Fill in the blank:

Compound with identical molecular formulae but different structures, are called _____________

Concept: Formation and Properties of Ionic Compounds
Chapter: [11] Understanding Metals and Non-Metals
[1]1.A.b

Name the following: Cells that assist the neuron in their function

Concept: The Central Nervous System
Chapter: [14] The Regulators of Life
[2]1.A.c

Match the following:

Column ‘I’ Column ‘II’
(1) Inhibits plant growth
(a) Breaks large fat globules into smaller ones
(2) Cytokinins
(b) Auxins
(3) Cellular respiration
(c) Mitochondria
(4) Bile
(d) Promote cell division
 
(e) Abscisic acid
Concept: Reproduction in Plant
Chapter: [15] The Life Cycle
[5]1.B
[1]1.B.a

Choose the correct alternative and rewrite the following:

Which gas is released in plants during the process of photosynthesis?

Carbon dioxide

Oxygen

Nitrogen

Hydrogen

Concept: Nutrition in Plants
Chapter: [13] Life's Internal Secrets
[1]1.B.b

Choose the correct alternative and rewrite the following:

To observe the hydro and clearly, Raju should see it first under the low power lens and then under the high power lens in order to see _____________

less area

wide area

more buds

all of the above

Concept: Properties of Ethanol
Chapter: [12] Amazing World of Carbon Compounds
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[1]1.B.c

Choose the correct alternative and rewrite the following:

Reaction of iron nails whith copper sulphate solution is an example of _____________________

combination reaction

decomposition reaction

displacement reaction

double displacement reaction.

Concept: Reaction of Metals with Non-metals
Chapter: [11] Understanding Metals and Non-Metals
[1]1.B.d

Choose the correct alternative and rewrite the following:

Which of the following is lue in colour?

CuSO4

FeSO4

ZnSO4

Al2 (SO4)3

Concept: Chemical Properties of Metals: When Metals Are Burnt in Air
Chapter: [11] Understanding Metals and Non-Metals
[1]1.B.e

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: Properties of Ethanoic Acid
Chapter: [12] Amazing World of Carbon Compounds
[10]2 | Attempt any five questions:
[2]2.A

Calcium floats over water during the reaction with water. Give reason.  

Concept: Chemical Properties of Metals: When Metals React with Water
Chapter: [11] Understanding Metals and Non-Metals
[2]2.B

Differentiate between Toilet soap and Laundry soap.

Concept: Soaps and Detergents
Chapter: [12] Amazing World of Carbon Compounds
[2]2.C
How do plants get rid of their excretory products?
Concept: Coordination in Plants - Introduction
Chapter: [14] The Regulators of Life
[2]2.D

Draw a well-labeled diagram of a Neuron.

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

Write a short note on regeneration.

Concept: Reproduction in Plant - Modes of Reproduction Used by Multicellular Organisms - Regeneration
Chapter: [15] The Life Cycle
[2]2.F

What do you mean by ‘Connecting Links’? Give one example.

Concept: Reproduction in Plant
Chapter: [15] The Life Cycle
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[15]3 | Attempt any five questions:
[3]3.A

Explain Mendel’s Monohybrid cross. Give an example.

Concept: Genetics: Mendel’s Laws of Inheritance
Chapter: [16] Mapping Our Genes
[3]3.B

Answer the following questions related to sex determination in human beings:
i. What is sex chromosome?
ii. How many pairs of chromosomes are present in human beings?
iii. How is the sex of the human offspring determined?
iv. Draw a diagram depicting sex determination in man.

Concept: Sex Determination in Humans
Chapter: [16] Mapping Our Genes
[3]3.C
[1.5]3.C.a

What do you mean by seismonastic movement?

Concept: Coordination in Plants - Movement Due to Growth
Chapter: [14] The Regulators of Life
[1.5]3.C.b

Name the types of movements in plants. Give one example of each movement.

Concept: Coordination in Plants - Movement Due to Growth
Chapter: [14] The Regulators of Life
[3]3.D
If the electronic configuration of metal A is (2, 8, 1) and that of metal B is (2, 8, 2) then:
a. Which metal is less reactive?
b. Write the names of the two metals.
c. Write the balanced chemical equation of the reaction of anyone metal with hydrochloric acid.
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
[3]3.E

What are Allotropes? Name any two allotropic forms of carbon. Give one use of it.

Concept: Bonding in Carbon - Covalent Bond
Chapter: [12] Amazing World of Carbon Compounds
[3]3.F

By which process do green plants synthesize their food?

Concept: Reproduction in Plant
Chapter: [15] The Life Cycle

Name the factors which take part in this process.

Concept: Reproduction in Plant
Chapter: [15] The Life Cycle

Write the chemical equation of the above process.

Concept: Chemical Properties of Metals: When Metals Are Burnt in Air
Chapter: [11] Understanding Metals and Non-Metals
[5]4 | Attempt any one questions:
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[5]4.A

Name the organs of the human male reproductive system and state the functions of any two organs.

Concept: Human Reproductive System
Chapter: [3] Life Processes in Living Organisms Part - 2 [15] The Life Cycle
[5]4.B

State the functions of the Maharashtra Pollution Control Board.

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