M G Public High School mauganj Rewa MP
Q 1 MCQs. (1×8=8)
(1) What happens when iron fillings are treated with dil. HCI?
(a) Hydrogen gas and iron chloride are produced (b) Chlorine gas and iron oxide are produced (c) No reaction takes place (d) Iron salt and water are produced.
(2) The pH value of water is (a) less than 7
(b) 7 (c) more than 7 (d) none of these.
(3) What is required for Autotrophic nutrition? (a) Chlorophill
(b) CO, & H₂O (c) Sunlight (d) All of these.
(4) Which property is not shown by metals?
(a) electric conduction (b) non-lustrousness
(c) sonorous nature (d) ductility.
(5) the hormone which increase the fertility in male is (a) estrogen (b) G.H.
(c) T.S.H. (d) testosterone
(6) The S.I unit of potential difference is
(a) Ampere(b) Volt (c) Ohm (d) Watt.
(7) The fusion of male gamete and female gamete is called
(a) Pollination (b) fusion
(c) Fertilisation (d) reproduction
(8) Which is the rear view mirror?
(a) Convex mirror (b) Plane mirror (c) Concave mirror (d) Sexual reproduction.
Q 2. Match the columns 'A' and 'B':
(1×8=8)o
Column 'A'. Column 'B'
(1) Decomposition by electricity
(a) Reflex ation
(ii) Bleaching powder (b) Ohm-Ampere
(iii) Clotting of blood. (c) Sperms
(Iv) Highly reactive metal (d) Concave lens
(v) Blinking of eyelids
(e) Electrolysis
(vi) S.I. Unit of Potential difference
(f) CaOCl2
(vii) Male gamete (g) Platelets
(vill) Diverging lens. ( h) Sodium
Q .3 Fill in the blanks:. 1x7=7
(1) Brittleness is the main feature of................
(2) Plants have only . ... . .......... .... co- ordination.
(3) One horse power= .................. Watt.
(4) Only .............. reproduction takes place in human.
(5) The transfer of variation generation to generation is called ......... ..............
(6) Errect (upright) image is formed only in............. mirror and...........lens.
(7) the angle between two surfaces of prism is called. ..............
Q 4. Answer in one word/sentence: 1x7=7
(1) Name the sources producing magnetic field.
(2) What type of magnet is used in electric bell?
(3) How does sky appears to an astronaut?
(4) Where the ovules are produced in human?
(5) Which plant was selected by Mendel for his experiment.
(6) Write the formula and unit of power of lens.
(7) In what type of substances decomposers decompose the dead bodies?
Q 5 the radius of curvature of spherical mirror is 20 CM what is its focal p length? 2
Or.
Define one dioptre of power of a lens.
Q 6 Write any two uses of concave mirror. 2
Or
The magnification produced by a
plane mirror is 1, what does this mean ?
7. Write the names of two sources of direct current. 2
Or
List any two properties of magentic field lines
Q 8 define the electric fuse,. 2
Or
State the principle of an electric generator
Q 9. Define mineral and ore. 2
Or
Define Gang and Sonorous
Q 10. Explain mendel's law of dominance ? 2
Or
Define self pollination.
Q 11. Define acquired traits and inherited traits? 2
. Or
Define genetic drift ?
Q 12. Draw any four symbols of the components used in an electric circuit. 2
Or
Why is tungstan used almost exclusively for filament of electric lamp?
Q 13. What will happen if we kill all the organisms of one trophic level? 2
. Or
What is ozone and how does it affect any ecosystem?
Q 14. Explain corrosion with example. 2
Or
Explain rancidity with example.
15. A mixture of oxygen and ethyne is burnt for welding. Can you tell why a mixture of ethyne and air is not used? 2
Or
Define the hydrogenation and write its industrial application?
Q 16. How is the small intestine designed to absorb digested food 2
Or
From where do the plants get each of raw materials required for photosynthesis?
Q 17 Explain the following terms on gain or loss of oxygen with one example of each--
(a) Oxidation, (b) Reduction. 3
Or
Define exothermic and endothermic reactions with examples.
Q 18. Draw a labelled diagram of the structure of neuron (nerve cell). 3
Or
Draw a labelled diagram of reflex action
Q 19. What is short sightedness ? explain by diagram that how it can be corrected ? 3
, Or
Why the trunks of trees and roads appear shaking during summer
Q 20. (a) Write the chemical name, formula and two uses of bleaching powder.
(b) why does distilled water not conduct electricity whereas rain water Does. 4
Or
(a) Plaster of paris should be stored in a moisture-proof container. Explain why?
(b) Define neutralization reaction with example.
Q 21. Draw the electron dot structure of the following:
(a) CH4. (b) CO₂. (c) ethanoic acid (d) H₂S. 4
Or
Draw the structures of the following: (a) Ethanoic acid, (b) Bromopentane. (c) butanone (d) Hexanol
Q 22. Write the differences between respiration and photosynthesis. 4
Or
what is blood ? write functions of blood
