SSC General Science Paper-1 2019

Class 10 Physical Science annual question paper-2019

Part A

Section-Ⅰ

( Answer all questions. Each question carries 1 mark. Write the answer in 2-3 sentences.)                                 7Χ1=7

1.  State the differences between Virtual image and Real image.

2. Complete the following ray diagram.

3.  Write any two uses of Spherical Mirrors.

4.  Does the focal length of a Spherical Mirror change when it is completely immersed in the water?  Predict and write the reason.

5. What happens if the household electric appliances are connected in series? 

6.  Draw the structure of Methane and mention the bond angle.

7.  Write the atomic structure of the following carbon compound.

 3, 7-dibromo-4,6-dichloro-oct-5-ene-1,2-diol.

Section-II

(Answer all the questions.  Each question carries 2 marks.  write the answer in 4-5 sentences.)   6х2=12

8.  Write any four uses of washing soda.

9.  Write the electronic configuration of  Na+ and Cl-.

10.  List out materials required for Oersted experiment and mention the precautions to be taken in the experiment.

11.  Observe the given table and answer the following questions.

(1) Mention the divalent element name.

(2) Name the element belonging to the 3rd Period and VA Group.

12.  Draw the ray diagram showing the correction of myopia eye defect.

13.  What happens if dispersion and scattering of light do not occur.

Section-III

(Answer all the questions. Each question carries 4 marks. There is an internal chois for each question. Write the answers in 8-10 sentences.)   4x4=16

14. (a) Write the precautions to be taken in the experiment to show air and water are essential for rusting iron articles, and also write the experimental procedure.

Or

(b) List out the material required in the experiment to show that the electric resistance depends upon the nature of the material and write an experimental procedure.

15. (a) Explain the formation of the Rainbow.

Or

(b) Explain the working process of the induction stove.

16. (a) How many grams of O2 is required for combustion 480 grams of Mg?  Find the mass of ‘MgO’ formed in this reaction. (Mg=24U, O=16U).     

                                                        Or

(b) Write the factors that influence Ionisation energy and explain any three of them.

17. (a) The magnification of the image formed by the spherical mirror is

m= -1.25.  Based on this information, answer the following question.

(i) Which kind of mirror forms such an image.

(ii) Write characteristics of the image.

(iii) If the size of the object is 2 cm, then what is the size of the image?

(iv) Write the position of the object on the principle axis.

Or

(b)

Observe the above table and answer the following questions.

(i) Write the general formula of Alkanes.

(ii) Mention the names of unsaturated Hydrocarbons.

(iii) Write the homologous series of Alkynes.

(iv) Write the formula of Hexyne.

Part-B 

(Answer all the questions. Each question carries ½ mark. )

1. A Bi-convex lens converges the parallel rays on the principle axis at 10 cm, then the focal length is _____ [   ]

1. 5 cm

2. 10 cm

3. 20 cm

4. 25 cm

2. Which part of the human eye controls the entering the light rays [     ]

1. Iris

2. Aqueous Humour 

3. Cornea

4. Eye Lens

     3.  Which of the following is used to purify drinking water? [     ]  

1. Plaster of Paris

2. Washing Soda

3. Baking Soda

4. Bleaching Powder

    4.  Which of the following shell have a maximum 32 electrons. [     ]

1. N

2. M

3. L

4. K 

   5.  IUPAC name of the compound CH3-CCL2-CBr2-CH=CH2 is___ [     ]

1. 2,2-dichloro-3,3-dibromo pent-1-ene

2. 3,3-dibromo pent-1-ene

3. 3,3-dibromo-4,4-dichloro pent-2-ene

4. 3,3-dibromo-4,4-dichloro pent-1-ene

   6.  The chemical is used in fire extinguishers. [     ]

  A. Sodium Chloride

  B. Bleaching Powder

  C. Sodium bicarbonate

  D. Plaster of Paris

7.  Which of the following is a balanced equation? [     ]

    A. Mg +O2 → MgO

    B. C + O2 → CO2

             C. H2 + O2  → H2O

    D. CaCO3 → CaO + CO2

8.  11, 12, 13 and 14 are the atomic numbers of the elements Na, Mg, Al and Si respectively.  Which element has maximum atomic radius. [     ]

      A. Na

      B. Mg

      C. Al

      D. Si

9.  Which of the following compounds formed by ionic bond. [     ]

              A. H2O

    B. NH3

    C. MgO

    D. HCl

10.  Which of the following situation does the current will be induced?                                                                                                                 [     ]

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