10th Govt. Supplementary Exam June 2023 - 10th Science Supplementary Question Answers

 Govt. Supplementary Exam - June 2023

Time Allowed: 3.00 Hrs                                      10^th Science                           Maximum Marks: 75

Instruction:      

1. Check the question paper for fairness of printing.  If there is any lack of fairness, inform the Hall Supervisor immediately. 
2. Use Blue or Black ink to write and underline and pencil to draw diagrams

Note: This question paper contains four Parts.

PART - I

Note:

i) Answer all the questions.                                                                                14 x 1 = 14

ii) Choose the most appropriate answer from the given four alternatives and write the option code and the corresponding answer. 

1.    1.    To project the rockets which of the following principle(s) is/are required?

        (a) Newton’s third law of motion
        (b) Newton’s law of gravitation
        (c) Law of conservation of linear momentum
        (d) Both (a) and (c)

2.     Kilowatt hour is the unit of ___________

        (a) resistivity
        (b) conductivity
        (c) electrical energy
        (d) electrical power

3.    If the radiation exposure is about 100 R, it may cause___________.

        (a) Skin disorder                  
        (b) Hair loss                        
        (c) Leukemia                    
        (d) Death

4.    _________ is an important metal to form amalgam.

        (a) Ag
        (b) Hg
        (c) Mg
        (d) A1

5.    Which of the following is hygroscopic in nature ?

        (a) Ferric Chloride
        (b) Copper Sulphate Penta Hydrate
        (c) Silica Gel
        (d) None of the above

6.    H_2(g)+ Cl_2(g) → 2HCl_(g) is a :

        (a) Decomposition Reaction  
        (b) Combination Reaction
        (c) Single Displacement Reaction
        (d) Double Displacement Reaction

7.    Casparian strips are present in the _________ of the root.

        (a) Cortex
        (b) Pith
        (c) Pericycle
        (d) Endodermis

8.    A patient with blood group ‘O’ was injured in an accident and has blood loss. Which group of blood should be used by the doctor for transfusion ?

        (a) ‘O’ group
        (b) ‘AB’ group
        (c) ‘A’ or 'B’ group
        (d) All blood group

9.    There are _________ pairs of Cranial nerves and _________ pairs of Spinal nerves

        (a) 12,31
        (b) 31,12
        (c) 12,13
        (d) 12,21

10.   Which of the following is referred as “Master Gland” ?

        (a) Pineal gland
        (b) pituitary gland
        (c) Thyroid gland
        (d) Adrenal gland

11.   “World No Tobacco Day” is observed on _________.

        (a) May 31
        (b) June 6
        (c) April 22
        (d) October 2

12.   Which of the following is/are a fossil fuel?

        (i) Tar                                 (ii) Coal                                 (iii) Petroleum
        (a) (i) only
        (b) (i) and (ii)
        (c) (ii) and (iii)
        (d) (i), (ii) and (iii)

PART - II

Note : Answer any seven questions. Question no. 22 is compulsory.                              7x2=14

13.   Define the unit of Current. [Unit 4]

14.   Name any three animals which can hear ultrasonic vibrations. [Unit 5]

15.   Define Relative atomic mass. [Unit 7]

16.   Name the simplest ketone and give its structural formula. [Unit 11]

17.   What does CNS stand for? [Unit 13]

18.   Define Triple fusion. [Unit 17]

19.   Draw and Label the structure of ‘Oxysomes’. [Unit 12]

20.   Why is Archaeopteryx considered to be a connecting link ?   [Unit 19]

21.   State the applications of DNA Finger Printing Techniques.     [Unit 20]

22.   A charge of 12 Coulomb flows through a bulb in 5 seconds. What is the current through the bulb?[Unit 4]

PART - III

Note : Answer any seven questions. Question no. 32 is compulsory.                              7x4=28

23.   State the Universal law of gravitation and derive its mathematical expression. [Unit 1]

 24.  (i) State Boyle’s law. [Unit 3]

        (ii) Distinguish between real gas and ideal gas.

25.   Match the following: [Unit 6]

 (i)  (a) Co - 60          - Age of Fossil

        (b) I - 131           - Function of Heart

        (c)  Na - 24          - Cancer

        (d) C - 14            - Thyroid disease

(ii)  Use the analogy to fill in the blank.

           1)   Spontaneous Process:  Natural Radioactivity

                   Induced Process        :  __________________

             2)   Nuclear Fusion          :  Extreme temperature

                   Nuclear Fission         :  __________________

26.   i) What is rust ? Give the equation for the formation of rust. [Unit 6]

        ii) State two conditions necessary for rusting of iron.  [Unit 8]

27.   Write notes on various factors affecting solubility. [Unit 9]

28.   Explain how neurons are classified based on its structure. [Unit 15]

29.   Write the events involved in the Sexual reproduction of a flowering plant. [Unit 17]

        a) State the types of first event.
        b) Mention the advantages and the disadvantages of that event.

30.   Write the importance of biotechnology in the field of medicine. [Unit 20]

31.   Write a note on EDITOR and its main parts. [Unit 23]

32.   Calculate the percentage of each element in Calcium Carbonate [CaCO₃] [Unit 7]

        [Atomic Mass Ca=40; C= 12; O = 16) 

PART - IV

Note : Answer all the questions. Draw diagrams wherever necessary.                            3x7=21

33. (a)  (i) Draw a ray diagram to show the image formed by a convex lens when the object is placed between F and 2F. [Unit 1]

            (ii) State Rayleigh's law of Scattering. [Unit 2]

           (iii) Differentiate - Convex lens and Concave lens. [Unit 2]

OR

        b) Compare the properties of Alpha, Beta and Gamma rays. [Unit 6]

34.   (a) (i) Write notes on : [Unit 9]

              (1) Saturated Solution    

              (2) Unsaturated Solution

            (ii) In what way hygroscopic substances differ from deliquescent substances ?      

OR

        (b) (i) What is chemical equilibrium ? What are its characteristics ? [Unit 19]

             (ii) Differentiate reversible and irreversible reactions.

35.   (a) How is the structure of DNA organised ? What is the biological significance of DNA ? [Unit 18]

OR

        (b)  (i) State the various routes by which transmission of human immunodeficiency virus (HIV) takes place. [Unit 21]

              (ii) State the importance of rainwater harvesting. [Unit 22]

- oOo

12th Supplementary Exam Orginal Question Paper Download