10th Science Important Questions

10th Science Important Questions

SCIENCE IMPORTANT QUESTIONS

2 MARKS

1.  Define moment of a couple.

2.  Differentiate convex lens and concave lens.

3.  State Charles’s law.

4.  Write the uses of Iron.

5.  What is photosynthesis and where in a cell does it occur?

6.  Write the differences between endocrine and exocrine gland.

7.  Draw the structure of sperm and label its parts.

8.  What is the importance of valves in the heart?

9.  State Newton’s second law.

10.              Define one calorie.

11.              Draw and label the structure of oxysomes.

12.              The aquatic animals live more in cold region why?

13.              Draw the structure of brain and label the parts

14.              What is bolting?

15.              Differentiate convex lens and concave lens.

16.              State Newton’s second law.

17.              What are the causes of ‘Myopia’?

18.              Define Relative atomic mass.

19.              Classify the following substances into deliquescent, hygroscopic - Conc. Sulphuric acid, Copper sulphate penta hydrate, Silica gel, Calcium chloride, Gypsum salt

20.              Differentiate Dicot and monocot leaf.

21.              Who discovered Rh factor? Why was it named so?

22.              Why are thyroid hormones referred as personality hormone?

23.              Draw the structure of gynoecium and label its parts.

24.              Why did Mendel select pea plant for his experiments?

4 MARKS

1.  Deduce the equation of a force using Newton’s second law of motion.

2.  Explain the construction and working of a ‘compound microscope’.

3.  Explain superficial expansion with equation.

4.  Give the salient features of “Modern atomic theory”.

5.  Explain the methods of preventing corrosion.

6.  Write the differences between Dicot stem and Monocot stem.

7.  With a neat labeled diagram explain the structure of a neuron.

8.  Write the physiological effects of gibberellins.

9.  How is the structure of DNA organized? What is the biological significance of DNA?

10.              What are the advantages of LED TV over the normal TV?

11.              Give any four applications of universal law gravitation.

12.              State Rayleigh’s scattering law.

13.              Why the sky does appear in blue color?

14.              An alloy of nickel and chromium is used as the heating element. Why?

15.              Find the percentage of nitrogen in ammonia

16.              State Avogadro’s law.

17.              Write notes on: (i) Saturated solution (ii) Unsaturated solution

18.              Differentiate aerobic and anaerobic respiration.

19.              List out the parasitic adaptations in leech.

20.              Write any four functions of blood.

21.              What are the phases of menstrual cycle? Indicate the changes in the ovary and uterus.

7 MARKS

1.  List any four properties of light.

2.  Derive the ideal gas equation.

3.  With the help of a circuit diagram derive the formula for the resultant

4.  Resistance of three resistances connected.

5.  Derive the relationship between Relative molecular mass and

6.  Vapour density.

7.  In what way hygroscopic substances differ from deliquescent substances.

8.  Explain smelting process.

9.  Explain male reproductive system of rabbit with a labeled diagram.

10.              What are the phases of menstrual cycle? Indicate the changes in the ovary and uterus.

11.              What are the types of inertia? Give an example for each type.

12.              If you keep ice at 0° C and water at 0°C in either of your hands, in which hand you will feel more chillness? Why?

13.              Write the difference between atoms and molecules

14.              Write notes on i) saturated solutions ii) un saturated solutions

15.              Tabulate the different parts of the brain and their functions?

16.              Differentiate the following

i)            Monocot root and Dicot root

ii)          Aerobic and Anaerobic respiration

17.              How does locomotion take place in leech? ii) Accessory sex organ in female?

18.              State-the law of volume

19.              A is a silvery white metal. A combines with O2 to form B at 8000C, the alloy of A is used in making the aircraft. Find A and B

20.          State the universal law of gravitation and derive its mathematical expression

21.          Write notes on various factors affecting solubility

22.              Function of thyroid hormones?

23.          What are the phases of menstrual cycle? Indicate the changes in the ovary and uterus.

24.              Derive the ideal gas equation.

25.              State Joule’s law of heating.

26.              Explain the rules for obtaining images formed by a convex lens with the help of ray diagram.

27.              Give the applications of Avogadro’s law.

28.              Define amalgam.

29.              Explain the male reproductive system of rabbit with a labeled diagram

30.              Write any four importance of transpiration

31.              Name the gaseous plant hormone.

32.              Write the physiological effects of gibberellins.

33.              Which hormone is known as stress hormone in plants? Why?