Homeworks for Class 10 - SCIENCE for the summer 2018

  Science Practice Questions (From Previous Year's Syllabus) For Class X
1) Draw neat labelled diagrams of the following-
(a) Human respiratory system
(b) Human digestive system
(c ) Human heart
(d) Human circulatory system- schematic diagram
(e ) Human tongue showing the taste areas
(f) Human excretoty system
(g) Human eye
(h) Human male and female reproductive system
(i) Human sperm and ovum
(j) Nerve cell
(k) Longitudinal section of a bisexual flower.
2)  Mention the secretions and their functions for- (a) Stomach  (b) Liver  (c ) Salivary glands
3) What is the function of small intestine? How is it designed for this function?
4) What is stomata? Draw neat labelled diagram of stomata. What are its functions?
5) Define respiration. With equations, differentiate between aerobic and anaerobic respiration.
(Please remember there are two types of anaerobic respiration)
6) Tabulate the structural and functional differences between arteries an dveins.
7) On an outline diagram of human body, locate the following endocrine glands, name one secretion and its function for each gland-
(a) Pituitary  (b) Thyroid gland  (c ) Adrenal gland (d) Pancreas
8) Draw a flowchart to show how the gender of an unborn child is determined.
9) Distinguish between Zygote, Embryo and Foetus.( 2 differences)
10) Differentiate between sexual  and asexual reproduction in plants.(2 points)
11) With neat labelled diagrams,  name and explain the method of asexual reproduction in -
(a) Hydra  (b) Yeast  (c ) Amoeba
12)  What are decomposers? What is their role in the environment?
13) What is breathing? What are the steps involved? Explain.
14) For the following types of reactions, Define and give one equation each as example-
(a) Combination  (b) Decomposiyion  (c )Simple  Displacement  (d0 Double displacement
15) What are indicators? For the following indicators, tabulate the colour change in acids and bases-
(a) Litmus  (b) Turmeric
16) What is neutralisation reaction? Give an equation as example.
17) Briefly explain any 4 instances of neutralisation reactions from daily life.
18) With equations,write any 2 difference in chemical  properties of metals and non  metals.
19) Tabulate the difference in physical properties of metals  and non metals.( any 5 points)
20)  Tabulate the atomic number; number of protons, electrons and neutrons; valence electrons, valency and electronic configuration of the first 20 elements in the modern periodic table.
21) Write the laws of reflection of light with a diagram.
22) Draw the ray diagram for image formation by plane  mirror.
23) Explain the activity of hydrolysis of water. Draw a neat labelled diagram of the same( passing electricity through water)
24) Explain the activity of copper plating with a neat labelled diagram. 
25) Explain an activity to show that solutios of acids and bases conduct electricity.
26) When acetic acid(vinegar) reacts with baking soda( sodium bicarbonate), brisk effervescence is seen. What is the gas eveolved? How will you test for the same?
27) When metals react with acids, what gas is evolved? How will you test for the gas?
28) What is rusting of iron? Write the equation for the process of rusting. Write 3 ways to prevent rusting.
29) What are alloys? Why are they made? Give two examples of  alloys and write their composition.
30) For any 5 metals and any 5 non metals, write their uses.


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