4 September 2022

10th Science Quarterly Exam Question Paper 2019

 


1) State the principle of moments.?
2) Differentiate convex lens concave lens.?
3) Define atomicity.?
4) TRUE OR FALSE. IF FALSE GIVE THE CORRECT STATEMENT:
A) An alloy is a heterogeneous mixture of metals
5) MATCH THE FOLLOWING:
    1)blue vitriol
    2)gypsum 
    3)deliquescence
    4)hygroscopic
6) Draw and label the structure f mitochondria
7) a) Write the dental formula of rabbits.
    b) How is diastema formed in rabbits?
8) Which gland is called the "master gland "? give reason?
9) What are allosomes?
10) Calculate the resistance of a conductor through which a current of 2A passes, when the potential difference between its ends is 30v
11) State the universal law of gravitation and derive its mathematical expression.
12) a) List any five properties of light.
13) Derive the ideal gas equation.
14) Explain the smiting process.
15) Explain the male reproductive system of rabbits with a labelled the sure of a neuron?
16) Enumerate the functions of blood.
17) Illustrate the structure and functions of the brain.
18) a)Define triple fusion 
      b)Draw and label the structure of a neuron 
19) a)1.5g of solute is dissolved in 15g of water to form a saturated solution at 298k. find out the solubility of the solute at the temperature.
     b)What is mean the binary solution?
20) a)Explain the construction and working of a 'compound microscope'
      b)State Snell's law (OR)
      a)Calculate the current and the resistance of a 100w. 200w electric bulb in an electric circuit.
      b)Write three fundamental laws of gases.
21) a)Give the salient features of 'modern atomic theory".
      b)Calculate the number of moles by 27g of AI (OR)
      a)Name the acid that renders aluminium passive why?
      b)In What way do gyroscopic substances differ from deliquescent substances.
22) a)Classify neurons based on their structure.
      b)Why is the colour of the blood red?
      c)Name two-layered protective coverings of the human heart (OR)
How is the structure of DNA organized? what is the biological significance of DNA?





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