apscert.gov.in Physical Sciences Question Paper Model : State Council of Educational Research and Training

Organisation : State Council of Educational Research and Training
Exam : Physical Sciences Model Question Paper
Document Type : Model Question Paper

Website : apscert.gov.in
Download Sample Question Paper :  https://www.pdfquestion.in/uploads/7497-10thPhysical%20Science.pdf

Physical Sciences Model Paper :

Topic: Heat, Chemical Reactions and Equations
Class: X
Max Marks: 25
Time: 60 min

Related : State Council of Educational Research and Training SSLC Mathematics Paper Model : www.pdfquestion.in/7495.html

Academic Standards weightage Table :
AS1 – 10
AS2 – 2.5
AS3 – 2.5
AS4 – 4
AS5 – 2.5
AS5 & AS6 – 3.5

Type of Question Table :
Essay 2 × 4 (M) = 10 M
Short Answer 4 × 2 (M) = 8 M
Veru Short 4 × 1 (M) = 4 M
MCQ 10 × ½ (M) = 5 M

Syllabus for Unit Exams :
1. I July :
1. Heat
2. Chemical readious and equations
3. Reflection of light by different surface

2. II August :
1. Acids, Bases and Salts
2. Refraction of light at plane surface

3. III November :
1. Human Eye and colourful world
2. Structure of Atom
3. Classification of Elements the periodic table

4. IV February :
1. Electro magnatism
2. Principles of Metallergy
3. Carbon and its compounds

I Answer all the questions 4 × 2 = 8 marks
1. 2 ca (NO3)2 ? 2CaO + 4NO2+O2 ?
From the above equation, how many moles of NO2 is evolved when two moles of Ca(NO3)2 is decomposed.
2. Explain the concept, why water in a new clay pot are cool?

3. During winter season you wear woolen clothes to keep your body warm. How woolen clothes helps us keep our body warm.
4. Iron oxide reacts with aluminium to form Iron and aluminium trioxide. Write the balanced chemical equation for the above reaction.

II Answer all questions 4 × 1 = 4 marks
5. Formula of water is H2O. Why can’t we write as HO2 explain?
6. How can you prevent currosion?
7. Three bodies A, B, C are in thermal equalibrium. Temperature of A is 30°C then what is temperature of C.
8. What is the difference between boiling and evaporation?

III Answer all questions 2 × 4 = 8 marks
9. Two thermometers are self in two vessels containing same liquid
a) Internal energy of which liquid is more ?
b) What do you generalise from the above diagrams?
c) Find the fault in one of the above diagrams?
10. Calculate the volume, mass and number of molecules of hydrogen liberated when 230g of sodium reacts with excess of water at S.T.P. (atomic mass of Na = 23U, O = 16U and H = 1U).

IV Answer all questions. Pick the correct answer 10 × ½ = 5 marks
11. Different gases are at same temperature. Which of the following is same for all gases. ( )
a) mass b) Velocity c) momentum d) Average kinetic energy
12. Convert 173K into °C ()
a) 446°C b) -100°C c) 0°C D) -446°C
13. Which of the following is not correct. ( )
a) No heat tronsfer takes place between the bodies of the system if the system is at thermal equilibrium.
b) The boiling temperature of water increases with the increase in pressure.
c) the kinitic energy of the molecule is zero when the lequid is at °C
d) 80000cal of heat is required for 1 kg ice at 0°C to becoming water.
14. A water bottle is filled completely with water, close the lid and keep in deep freeze.
What do you conclude with this experiment? ( )
a) When temperatue decreases, glass bottle contract and breaks.
b) When temperature decreases, glass bottle expand and breaks.
c) When water becomes ice, its volume increases and bottle breaks.
d) When water becomes ice, its volume decreases and bottle breaks.
15. Wet clothes dry in rooms. Why ? ( )
a) evaporation b) condensation c) boiling d) melting
16. In Lays, Kurkure pockets chips can be protected for long time. The gas used in these pockets is ( )
a) Oxegen b) Nitrogen c) Hydrogen d) Carbondioxide
17. During rainy season power supply interrupted from the poles. Because ( )
a) Due to the formation of metal oxide layer on the wire
b) Due to the formation of metal sulphide layer on the wire
c) Due to the formation of metal corbonate layer on the wire
d) All the above
19. Brahma Reddy, added potassium Iodide Solution to the Lead nitrate solution prepared by Sudhakar. Then the colour of Lead Iodide solution is ( )
a) Green b) Yellow c) Red d) Brown